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Longer titles found: Angular diameter distance (view)

searching for Angular diameter 140 found (450 total)

119 Tauri (1,353 words) [view diff] exact match in snippet view article find links to article

naked eye under good observing conditions. A semiregular variable, its angular diameter has been measured at about 10 mas. It is a similar star to Betelgeuse

Solar Saros 135 (302 words) [view diff] exact match in snippet view article find links to article

its angular diameter nearly as large as possible). This occurs around January 3. The Moon being nearly exactly at apogee (making its angular diameter as

NGC 3228 (340 words) [view diff] exact match in snippet view article find links to article

its center. Klarchenko et al. mention 53 possible members within the angular diameter of the cluster. The tidal radius of the cluster is 1.4 – 5.5 parsecs

IC 348 (416 words) [view diff] exact match in snippet view article find links to article

associated 2-million-year-old cluster of roughly 400 stars within an angular diameter of 20″. The most massive stars in the cluster are the binary star system

Messier 80 (674 words) [view diff] exact match in snippet view article find links to article

telescopes, appearing as a mottled ball of light. It has an apparent angular diameter of about 10 arcminutes. Since it is 32,600 light-years (10,000 pc)

Messier 38 (520 words) [view diff] exact match in snippet view article find links to article

effort to find a geometrical figure. At its distance of 1066 pc., its angular diameter of about 20 arc minutes corresponds to about 4.0 parsecs (13 light

Shapley 1 (236 words) [view diff] exact match in snippet view article find links to article

center of the nebula is a magnitude 14 white dwarf star. It has an angular diameter of 1.1 arc minutes, which makes it about one-third (.32) of a light

V602 Carinae (831 words) [view diff] exact match in snippet view article find links to article

distance, and a larger radius of 1,050±165 R☉ based on the measured angular diameter and luminosity. An effective temperature of 3,432±280 K was then calculated

Astronomy on Mars (3,565 words) [view diff] exact match in snippet view article find links to article

partial eclipses of the Sun by Phobos, since the angular diameter of Phobos is up to half the angular diameter of the Sun. However, in the case of Deimos the

V5668 Sagittarii (699 words) [view diff] exact match in snippet view article find links to article

and the mass of the entire shell to be 2.7 to 5.4 × 10−5 M☉ . The angular diameter of the dust shell was estimated to be 42 milliarcsec which, along with

Nebula (2,845 words) [view diff] exact match in snippet view article find links to article

Nebula, the brightest nebula in the sky and occupying an area twice the angular diameter of the full Moon, can be viewed with the naked eye but was missed by

3 Geminorum (758 words) [view diff] exact match in snippet view article find links to article

Observations of these occultations can give information about the angular diameter of a star, or about close companions. Occultations of 3 Geminorum have

Intensity interferometer (258 words) [view diff] exact match in snippet view article find links to article

of such an astronomical interferometer is to determine the apparent angular diameter of a radio source or star. If the distance to the object can then be

X Cancri (850 words) [view diff] exact match in snippet view article find links to article

These bands are thought to be very sensitive to temperature. The angular diameter of X Cancri has been measured using both lunar occultations and very

Mu Cephei (2,525 words) [view diff] exact match in snippet view article find links to article

based on its angular diameter and an assumed distance of 2,400 light years gives it a radius of 1,650 R☉, however the angular diameter used later turned

Francis G. Pease (250 words) [view diff] exact match in snippet view article find links to article

to the 100-inch (2,500 mm) telescope at Mt. Wilson to measure the angular diameter of the star Betelgeuse. Their estimate of 0.047" was very close to

Puppis A (298 words) [view diff] exact match in snippet view article find links to article

in diameter and roughly 6500–7000 light-years distant. Its apparent angular diameter is about 1 degree. The light of the supernova explosion reached Earth

Virbhadra–Ellis lens equation (168 words) [view diff] exact match in snippet view article find links to article

angle of light ( α ^ ) {\displaystyle ({\hat {\alpha }})} , and the angular diameter lens-source ( D d s ) {\displaystyle \left(D_{ds}\right)} and observer-source

TX Piscium (1,025 words) [view diff] exact match in snippet view article find links to article

semi-regular or irregular variable which usually pulsate in an overtone. The angular diameter has been measured at around 10 mas, although this varies depending

Gliese 667 (2,571 words) [view diff] exact match in snippet view article find links to article

along the middle of the habitable zone, Gliese 667 C would have an angular diameter of 1.24 degrees—2.3 times larger than the Sun appears from the surface

W Orionis (616 words) [view diff] exact match in snippet view article find links to article

A long secondary period of 2,450 days has also been reported. The angular diameter of W Orionis has been measured using interferometry and a value of

HD 32453 (687 words) [view diff] exact match in snippet view article find links to article

has expanded to 10 times the latter's girth (radius detected from an angular diameter of 0.748 mas). It radiates at 50 solar luminosities from its enlarged

ESO 383-76 (1,595 words) [view diff] exact match in snippet view article find links to article

photometric catalogue by Lauberts and Valentijn in 1989 that made the first angular diameter measurements of the galaxy. This includes the D25 and D25.5 B-band

Astronomical seeing (3,902 words) [view diff] exact match in snippet view article find links to article

overcome seeing. The strength of seeing is often characterized by the angular diameter of the long-exposure image of a star (seeing disk) or by the Fried

R Crucis (650 words) [view diff] case mismatch in snippet view article find links to article

Moskalik, P.; Gorynya, N. A. (2005). "Mean Angular Diameters and Angular Diameter Amplitudes of Bright Cepheids". Acta Astronomica. 55: 247. arXiv:astro-ph/0507076

Moons of Pluto (3,706 words) [view diff] exact match in snippet view article find links to article

passes in front of and blocks one of Pluto's satellites. Charon has an angular diameter of 4 degrees of arc as seen from the surface of Pluto; the Sun appears

IC 2395 (651 words) [view diff] exact match in snippet view article find links to article

same cluster is also supported by Clariá et al. who estimated its angular diameter at 19 arcminutes. IC 2395 is an open cluster of poor to moderate richness

S Orionis (550 words) [view diff] exact match in snippet view article find links to article

have been observed using VLTI and VLBA observations which measured an angular diameter varying between 7.9 and 9.7 mas. The mean period of variation has been

History of Mars observation (7,726 words) [view diff] exact match in snippet view article find links to article

geocentric model to explain the planet's motions. Measurements of Mars' angular diameter can be found in ancient Greek and Indian texts. In the 16th century

Canes II Group (136 words) [view diff] case mismatch in snippet view article find links to article

Name Equatorial Coordinates Declination Blue Magnitude Type Angular Diameter arc. Galaxy Diameter (Kly) Recessional Velocity Other Names NGC 4096 12 06

Soap Bubble Nebula (368 words) [view diff] exact match in snippet view article find links to article

imaged PN G75.5+1.7 on July 17, 2008. The nebula measures 260″ in angular diameter with a central star that has a J band magnitude of 19.45. Due to the

Winter solstice (3,175 words) [view diff] exact match in snippet view article find links to article

change in azimuth or elevation less than or equal to about 1/60 of the angular diameter of the Sun. Observing that it occurred within a two-day period is easier

Antares (5,517 words) [view diff] exact match in snippet view article find links to article

in 2010. The linear radius of the star can be calculated from its angular diameter and distance. However, the distance to Antares is not known with the

W Hydrae (447 words) [view diff] exact match in snippet view article find links to article

System). Radius calculated using a distance of 98+30 −18 parsecs and an angular diameter of 41.4 milliarcseconds (0.041 arcsec). 98 • 0.041 = diameter of 4

PKS 2131-021 (508 words) [view diff] exact match in snippet view article find links to article

comoving coordinate distance of PKS 2131−021 is 3.97 Gpc, with an angular diameter distance of 1.74 Gpc, and luminosity distance of 9.08 Gpc. Observations

T Ceti (641 words) [view diff] exact match in snippet view article find links to article

"Fundamental parameters of 16 late-type stars derived from their angular diameter measured with VLTI/AMBER". Monthly Notices of the Royal Astronomical

Spirit (rover) (5,063 words) [view diff] exact match in snippet view article

seeing Mercury's 6.1" angular diameter. They were able to observe transits of Deimos across the Sun, but at 2' angular diameter, Deimos is about 20 times

V636 Scorpii (485 words) [view diff] case mismatch in snippet view article find links to article

Moskalik, P.; Gorynya, N. A. (2005). "Mean Angular Diameters and Angular Diameter Amplitudes of Bright Cepheids". Acta Astronomica. 55: 247. arXiv:astro-ph/0507076

72 Tauri (678 words) [view diff] exact match in snippet view article find links to article

-C; Zhu, G. -L.; Fan, Q. -Y. (1987). "The measurements of stellar angular diameter by photoelectric observation of lunar occultation". Acta Astronomica

W Aquilae (986 words) [view diff] exact match in snippet view article find links to article

being accepted for peer-reviewed publication. Radius calculated with angular diameter and distance in Table 1 Vallenari, A.; et al. (Gaia collaboration)

Orders of magnitude (volume) (662 words) [view diff] exact match in snippet view article

core radius r = distance times sin(1⁄2 angular diameter) = 0.2 light year. Distance = 3.3 ± 0.9 kly; angular diameter = 20 arcseconds; expands 10 milliarcseconds

NGC 2244 (549 words) [view diff] exact match in snippet view article find links to article

astronomiques de Strasbourg. Retrieved 2007-04-20. distance × sin( angular diameter / 2 ) "The Rosette Nebula In Hubble Palette". Sky & Telescope. Retrieved

HR 7484 (600 words) [view diff] case mismatch in snippet view article find links to article

Based on Eclipsing Binary Stars: Toward Precision Better than 1% in Angular Diameter Predictions". The Astrophysical Journal. 837 (1): 19. arXiv:1611.09976

SU Persei (688 words) [view diff] exact match in snippet view article find links to article

Observations during 2015 and 2016 with CHARA show that the star has an angular diameter between 3.51 and 3.68 milliarcseconds. Considering its large distance

R Andromedae (1,126 words) [view diff] exact match in snippet view article find links to article

temperature and luminosity but is typically about 2,500 K and 6,300 L☉. The angular diameter of R Andromedae has been measured at 8.63±1.42 mas and 8.32±1.27 mas

BOOMERanG experiment (584 words) [view diff] exact match in snippet view article find links to article

and others, the BOOMERanG data from 1997 and 1998 determined the angular diameter distance to the surface of last scattering with high precision. When

UU Aurigae (1,019 words) [view diff] exact match in snippet view article find links to article

1971 to 1998, the periods are calculated as 439.4 and 233.1 days. The angular diameter of UU Aurigae has been measured at 12.07 ± 0.22 mas using very-long-baseline

Alpha Sagittarii (971 words) [view diff] exact match in snippet view article find links to article

inner solar system on a 250 year orbit. Radius retrieved multiplying angular diameter to distance; 107.5*0.00048 arcseconds*52.1 pc = 2.69 R☉. van Leeuwen

S Crucis (456 words) [view diff] case mismatch in snippet view article find links to article

Moskalik, P.; Gorynya, N. A. (2005). "Mean Angular Diameters and Angular Diameter Amplitudes of Bright Cepheids". Acta Astronomica. 55: 247. arXiv:astro-ph/0507076

Alphard (1,105 words) [view diff] exact match in snippet view article find links to article

with a spectral classification of K3 and luminosity class III. The angular diameter has been measured using interferometry, after correction for limb darkening

Lambda Gruis (435 words) [view diff] exact match in snippet view article find links to article

1134/S1063773712050015, S2CID 119257644. Cruzalèbes, P.; et al. (June 2010), "Angular diameter estimation of interferometric calibrators. Example of λ Gruis, calibrator

CHARA array (978 words) [view diff] exact match in snippet view article find links to article

measured directly, using CHARA. This was achieved by using the observed angular diameter of the star that the planet orbited, and the already known distance

Lambda Boötis (751 words) [view diff] case mismatch in snippet view article find links to article

1051/0004-6361:200810623, S2CID 14972955 Ciardi; et al. (2007), "The Angular Diameter of λ Boötis", The Astrophysical Journal, 659 (2): 1623–1628, arXiv:astro-ph/0612723

RW Cephei (3,415 words) [view diff] exact match in snippet view article find links to article

Images obtained using the SURFING algorithm result in a limb-darkened angular diameter of 2.45 mas, corresponding to a linear radius of 900–1,760 R☉ depending

Chi Cygni (3,728 words) [view diff] exact match in snippet view article find links to article

the angular diameter of the star. The statistical margin of error is about 20%. The distance can also be derived by comparing changes in the angular diameter

Upsilon Capricorni (532 words) [view diff] exact match in snippet view article find links to article

; Evans, D. S.; Silverberg, E. C.; Wiant, J. R. (March 1973), "The angular diameter of Upsilon Capricorni and an occultation of SAO 118655.", Astronomical

AZ Cygni (2,072 words) [view diff] exact match in snippet view article find links to article

unreliable due to a high amount of astrometric noise. By using the angular diameter and Gaia parallax-derived distance in the 2019 Mid-infrared stellar

Eridanus Cluster (282 words) [view diff] exact match in snippet view article find links to article

barred and unbarred); Sm, SBm, Irr=Irregular; (r),(rs)=Ring Structure Angular diameter of the galaxy (arcminutes) Diameter of the galaxy (thousands of light

Heliometer (660 words) [view diff] no match in snippet view article find links to article

The difference in the two micrometer readings so obtained is the (angular) diameter of the Sun. Similarly, a precise measurement of the apparent separation

KW Sagittarii (1,040 words) [view diff] exact match in snippet view article find links to article

000 L☉ and a radius around 1,009 ± 142 R☉ was based on the measured angular diameter and luminosity. VX Sagittarii — another red supergiant (RSG) in the

Sparrow's resolution limit (418 words) [view diff] exact match in snippet view article find links to article

stars that can still be perceived as separate by an observer. The angular diameter of the Airy disk is determined by the aperture of the instrument. Rayleigh's

Fine guidance sensor (715 words) [view diff] exact match in snippet view article find links to article

companion, determine if certain stars really are double stars, measure the angular diameter of stars, galaxies, etc. Due to the sensitivity of the FGS they can

87 Leonis (451 words) [view diff] exact match in snippet view article find links to article

S2CID 14878976. Dunham, D. W.; Evans, D. S.; et al. (April 1974), "The angular diameter of 87 Leonis.", Astronomical Journal, 79: 483–484, Bibcode:1974AJ.

Kappa Pavonis (972 words) [view diff] exact match in snippet view article find links to article

radius to change by about 3 R☉ above and below the mean size. The angular diameter of the disc has been directly observed to change during the pulsations

S Normae (612 words) [view diff] case mismatch in snippet view article find links to article

Moskalik, P.; Gorynya, N. A. (2005). "Mean Angular Diameters and Angular Diameter Amplitudes of Bright Cepheids". Acta Astronomica. 55: 247. arXiv:astro-ph/0507076

Lacaille 9352 (1,062 words) [view diff] exact match in snippet view article find links to article

known as a red dwarf. This was the first red dwarf star to have its angular diameter measured, with the physical diameter being about 47% of the Sun's radius

Maia (star) (1,699 words) [view diff] exact match in snippet view article

and a mass of 3.8 solar masses. Interferometric measurements give an angular diameter of 0.451±0.006 mas, suggesting a radius of 6.61 R☉ assuming a distance

Scientific information from the Mars Exploration Rover mission (4,464 words) [view diff] exact match in snippet view article find links to article

permit seeing Mercury's 6.1" angular diameter. Transits of Deimos across the Sun were seen, but at 2' angular diameter, Deimos is about 20 times larger

Omicron1 Orionis (727 words) [view diff] exact match in snippet view article find links to article

"Fundamental parameters of 16 late-type stars derived from their angular diameter measured with VLTI/AMBER", Monthly Notices of the Royal Astronomical

S Persei (1,627 words) [view diff] exact match in snippet view article find links to article

hypergiant and has a radius over 700 times the sun's radius (R☉). Its angular diameter has been measured directly and found to be somewhat elliptical. Modelled

R Aquilae (739 words) [view diff] exact match in snippet view article find links to article

35) × 10−7 M☉ yr−1, forming a dusty silicate shell. Calculated using angular diameter and distance in Table 1 Brown, A. G. A.; et al. (Gaia collaboration)

Richard Towneley (2,901 words) [view diff] exact match in snippet view article find links to article

observations of the comet of 1664, he devised his own method of computing the angular diameter of the nucleus by comparing it with the apparent diameter of a weather

S Muscae (665 words) [view diff] case mismatch in snippet view article find links to article

Moskalik, P.; Gorynya, N. A. (2005). "Mean Angular Diameters and Angular Diameter Amplitudes of Bright Cepheids". Acta Astronomica. 55: 247. arXiv:astro-ph/0507076

Lambda Aquarii (1,162 words) [view diff] case mismatch in snippet view article find links to article

S2CID 120313180. 10. Nather, R. Edward; et al. (June 1970). "The Angular Diameter of Lambda Aquarii". Astrophysical Journal. 160: L181. Bibcode:1970ApJ

Beta Tauri (1,516 words) [view diff] exact match in snippet view article find links to article

including as a "SrCrEu star" or even an Ap star. Its limb-darkened angular diameter has been measured at 1.090±0.076 mas. At a distance of 41.1 pc, this

HR Carinae (1,509 words) [view diff] exact match in snippet view article find links to article

but much less bright. It is most likely a red supergiant with an angular diameter of 0.85±0.20 mas, translating to a radius about 500±150 R☉, and also

Epsilon Trianguli Australis (448 words) [view diff] exact match in snippet view article find links to article

"Fundamental parameters of 16 late-type stars derived from their angular diameter measured with VLTI/AMBER", Monthly Notices of the Royal Astronomical

Gamma Hydri (535 words) [view diff] exact match in snippet view article find links to article

"Fundamental parameters of 16 late-type stars derived from their angular diameter measured with VLTI/AMBER", Monthly Notices of the Royal Astronomical

Merak (star) (1,361 words) [view diff] case mismatch in snippet view article

Hanlon, W.; Hinrichs, C. E.; Holder, J.; Jin, W. (2024-04-26). "An Angular Diameter Measurement of β UMa via Stellar Intensity Interferometry with the

List of largest galaxies (661 words) [view diff] exact match in snippet view article find links to article

provided scale "Virgo + GA + Shapley" multiplied with the values for the angular diameter of the cited estimation method. Morphology unlisted; images show an

R Sculptoris (896 words) [view diff] exact match in snippet view article find links to article

"Fundamental parameters of 16 late-type stars derived from their angular diameter measured with VLTI/AMBER". Monthly Notices of the Royal Astronomical

James Bradley (1,651 words) [view diff] exact match in snippet view article find links to article

1757. He was survived by one daughter. In 1722, Bradley measured the angular diameter of Venus with a large aerial telescope with an objective focal length

Dirk Reuyl (540 words) [view diff] exact match in snippet view article find links to article

with fellow staff member Alexander N. Vyssotsky. In 1941 he measured angular diameter of Mars using photographic plates. In 1943 he claimed to have discovered

Cosmic distance ladder (8,113 words) [view diff] exact match in snippet view article find links to article

relation (or Σ-D relation), used in elliptical galaxies, relates the angular diameter (D) of the galaxy to its velocity dispersion. It is important to describe

Transit of Phobos from Mars (1,945 words) [view diff] exact match in snippet view article find links to article

high latitudes (but less than 70.4°) will see a noticeably smaller angular diameter for Phobos because they are considerably farther away from it than

Gamma Reticuli (545 words) [view diff] exact match in snippet view article find links to article

"Fundamental parameters of 16 late-type stars derived from their angular diameter measured with VLTI/AMBER", Monthly Notices of the Royal Astronomical

R Trianguli Australis (529 words) [view diff] case mismatch in snippet view article find links to article

Moskalik, P.; Gorynya, N. A. (2005). "Mean Angular Diameters and Angular Diameter Amplitudes of Bright Cepheids". Acta Astronomica. 55: 247. arXiv:astro-ph/0507076

The Sand Reckoner (1,903 words) [view diff] exact match in snippet view article find links to article

the Sun was no more than thirty times larger than the Moon. that the angular diameter of the Sun, as seen from the Earth, was greater than 1/200 of a right

Zeta Arae (908 words) [view diff] exact match in snippet view article find links to article

"Fundamental parameters of 16 late-type stars derived from their angular diameter measured with VLTI/AMBER", Monthly Notices of the Royal Astronomical

Mu Geminorum (1,486 words) [view diff] case mismatch in snippet view article find links to article

16 December 2017. Mondal, Soumen; Chandrasekhar, T. (August 2005), "Angular Diameter Measurements of Evolved Variables by Lunar Occultations at 2.2 and

Spica (2,475 words) [view diff] exact match in snippet view article find links to article

the pair and to directly measure the orbital characteristics and the angular diameter of the primary, which was found to be (0.90 ± 0.04) × 10−3 arcseconds

Virgo Cluster (2,060 words) [view diff] exact match in snippet view article find links to article

SBa,SBb,SBc,SBd=Barred spiral, Sm,SBm,Irr=Irregular. Column 6: The angular diameter of the galaxy (arcminutes). Column 7: The diameter of the galaxy (thousands

Age of the universe (3,880 words) [view diff] exact match in snippet view article find links to article

on 23 February 2008. Retrieved 23 February 2008. Hu, W. "Animation: Angular diameter distance scaling with curvature and lambda". University of Chicago

IC 443 (1,330 words) [view diff] exact match in snippet view article find links to article

surrounding molecular clouds. IC 443 is an extended source, having an angular diameter of 50 arcmin (by comparison, the full moon is 30 arcmin across). At

Sigma Librae (1,313 words) [view diff] exact match in snippet view article find links to article

"Fundamental parameters of 16 late-type stars derived from their angular diameter measured with VLTI/AMBER". Monthly Notices of the Royal Astronomical

SN 1572 (2,233 words) [view diff] exact match in snippet view article find links to article

Tycho's SNR has a roughly spherical morphology and spreads over an angular diameter of about 8 arcminutes. Its physical size corresponds to radius of the

S Sagittae (837 words) [view diff] case mismatch in snippet view article find links to article

Moskalik, P.; Gorynya, N. A. (2005). "Mean Angular Diameters and Angular Diameter Amplitudes of Bright Cepheids". Acta Astronomica. 55: 247. arXiv:astro-ph/0507076

TRAPPIST-1e (2,719 words) [view diff] exact match in snippet view article find links to article

Sun due to the low luminosity of its star. The star would cover an angular diameter of about 2.17 degrees from the surface of the planet, and so would

R Leporis (870 words) [view diff] exact match in snippet view article find links to article

1075 • 𝜃 • d, where R is the radius (in solar radii/R☉), 𝜃 is the angular diameter in arcseconds and d is the distance in parsecs. Angular diameters of

Gliese 667 Cc (1,695 words) [view diff] exact match in snippet view article find links to article

edge of the habitable zone. From its surface, the star would have an angular diameter of 1.24 degrees and would appear to be 2.3 times the visual diameter

R Hydrae (1,101 words) [view diff] exact match in snippet view article find links to article

feature is consistent with the star's proper motion. Calculated with angular diameter and distance in Table 1 VERA Collaboration; Hirota, Tomoya; Nagayama

R Hydrae (1,101 words) [view diff] exact match in snippet view article find links to article

feature is consistent with the star's proper motion. Calculated with angular diameter and distance in Table 1 VERA Collaboration; Hirota, Tomoya; Nagayama

Sirius (10,259 words) [view diff] exact match in snippet view article find links to article

been measured by an astronomical interferometer, giving an estimated angular diameter of 5.936±0.016 mas. The projected rotational velocity is a relatively

Sakurai's Object (2,377 words) [view diff] exact match in snippet view article find links to article

had increased to around 11–15. By investigating the measured fluxes, angular diameter, and mass of the nebula, a distance of 5.5 kpc and luminosity of 38 L☉

Sunyaev–Zeldovich effect (2,203 words) [view diff] exact match in snippet view article find links to article

X-ray data can also be used to determine the Hubble constant using the angular diameter distance of the cluster. These thermal distortions can also be measured

On Sizes and Distances (Hipparchus) (3,021 words) [view diff] exact match in snippet view article

the Moon measured its own circle close to 650 times, and that the angular diameter of Earth's shadow is 2.5 times that of the Moon. Pappus tells us that

Ara (constellation) (3,229 words) [view diff] exact match in snippet view article

"Fundamental parameters of 16 late-type stars derived from their angular diameter measured with VLTI/AMBER". Monthly Notices of the Royal Astronomical

Eta Telescopii (1,512 words) [view diff] exact match in snippet view article find links to article

Jupiter, while its radius is 2.3 times the radius of Jupiter. From angular diameter and distance Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia

Alpha Reticuli (967 words) [view diff] exact match in snippet view article find links to article

"Fundamental parameters of 16 late-type stars derived from their angular diameter measured with VLTI/AMBER". Monthly Notices of the Royal Astronomical

Mensa (constellation) (4,071 words) [view diff] case mismatch in snippet view article

Based on Eclipsing Binary Stars: Toward Precision Better than 1% in Angular Diameter Predictions". The Astrophysical Journal. 837 (1): 19. arXiv:1611.09976

Zeta Geminorum (2,222 words) [view diff] exact match in snippet view article find links to article

1051/0004-6361/200811464, S2CID 18283579 Kervella, P.; et al. (March 2001), "The angular diameter and distance of the Cepheid ? Geminorum", Astronomy and Astrophysics

Eta Corvi (1,909 words) [view diff] exact match in snippet view article find links to article

already designated for β Corvi (Kraz) by R.H. Allen. Calculated using angular diameter and distance. van Leeuwen, F. (2007). "Validation of the new Hipparcos

Conjunction (astronomy) (3,701 words) [view diff] exact match in snippet view article

1953, BC, Mercury, Venus, Mars and Saturn formed a group with an angular diameter of 26.45 arc minutes. Jupiter was on the same day only a few degrees

(31345) 1998 PG (1,004 words) [view diff] exact match in snippet view article

4 kilometers. From the surface of 1998 PG, the moon would have an angular diameter of about 16.3°. For comparison, the Sun appears to be 0.5° from Earth

HR 5171 (3,397 words) [view diff] exact match in snippet view article find links to article

possible S Doradus variable, as well as an eclipsing variable. The angular diameter of HR 5171A has been published three times using measurements from

Transit of Mercury (3,512 words) [view diff] exact match in snippet view article find links to article

May 8 (descending node) and November 10 (ascending node), with the angular diameter of Mercury being about 12″ for May transits, and 10″ for November transits

Orbit of the Moon (4,678 words) [view diff] exact match in snippet view article find links to article

Minimum, mean and maximum distances of the Moon from Earth with its angular diameter as seen from Earth's surface, to scale. Scroll to right to see the

Eclipse cycle (10,447 words) [view diff] exact match in snippet view article find links to article

misses Earth's shadow. Also, at most solar eclipses, the apparent angular diameter of the Moon is insufficient to fully occlude the solar disc, unless

Acrux (2,331 words) [view diff] exact match in snippet view article find links to article

{\text{AU}}/R_{\bigodot }}}\\&11.073\cdot R_{\bigodot }\end{aligned}}} The angular diameter used (0.52 milliarcseconds) is from CADARS. Distance (99 parsecs) is

Altair (2,781 words) [view diff] exact match in snippet view article find links to article

may be due to convection cells forming at the cooler equator. The angular diameter of Altair was measured interferometrically by R. Hanbury Brown and

Orders of magnitude (length) (17,804 words) [view diff] exact match in snippet view article

217P. radius = distance times sin(angular diameter/2) = 0.2 light-year. Distance = 3.3 ± 0.9 kly; angular diameter = 20 arcseconds (Reed et al. 1999)

Arcturus (5,405 words) [view diff] exact match in snippet view article find links to article

Bibcode:1998Obs...118..299G. Quirrenbach, A.; et al. (August 1996), "Angular diameter and limb darkening of Arcturus.", Astronomy and Astrophysics, 312:

Length contraction (5,075 words) [view diff] exact match in snippet view article find links to article

Victor Weisskopf in a Physics Today article. For instance, for a small angular diameter, a moving sphere remains circular and is rotated. This kind of visual

Hollow Moon (3,085 words) [view diff] exact match in snippet view article find links to article

with such a satellite: Saturn's moon Prometheus has roughly the same angular diameter as the Sun when viewed from Saturn. Some scholars have claimed that

List of nearest giant stars (4,068 words) [view diff] exact match in snippet view article find links to article

Calculated using an angular diameter of 5.99 mas. Calculated using an angular diameter of 5.25 mas. Calculated using an angular diameter of 3.99 mas.

Barnard's Star (5,351 words) [view diff] exact match in snippet view article find links to article

amount to a quarter of a degree in a human lifetime, roughly half the angular diameter of the full Moon. The radial velocity of Barnard's Star is −110 km/s

Albireo (3,008 words) [view diff] exact match in snippet view article find links to article

interferometry from the Navy Precision Optical Interferometer. A limb-darkened angular diameter of 4.904 mas was measured. At the parallax-derived distance of 111

Dark Energy Survey (5,466 words) [view diff] exact match in snippet view article find links to article

correlations and spherical harmonics to constrain the ratio of comoving angular diameter distance D m ( Z e f f = 0.835 ) / r d = 18.92 ± 0.51 {\displaystyle

HR 8799 (4,455 words) [view diff] case mismatch in snippet view article find links to article

Ireland, Michael; von Braun, Kaspar (21 November 2012). "The CHARA Array Angular Diameter of HR 8799 Favors Planetary Masses for Its Imaged Companions". The

Orders of magnitude (power) (2,726 words) [view diff] exact match in snippet view article

"Fundamental parameters of 16 late-type stars derived from their angular diameter measured with VLTI/AMBER". Monthly Notices of the Royal Astronomical

Lunar theory (6,854 words) [view diff] exact match in snippet view article find links to article

factor of about 2, which is clearly not seen in reality. (The apparent angular diameter of the Moon does vary monthly, but only over a much narrower range

Atmosphere of Uranus (6,387 words) [view diff] exact match in snippet view article find links to article

frustration. Uranus is a relatively faint object, and its visible angular diameter is smaller than 5″. The first spectra of Uranus were observed through

BM Scorpii (819 words) [view diff] exact match in snippet view article find links to article

of 129 R☉, BM Scorpii has a bolometric luminosity of 3,388 L☉. Its angular diameter has been measured at 2.5 mas. In 1920 Annie Cannon discovered that

Total internal reflection (13,479 words) [view diff] exact match in snippet view article find links to article

is compressed into a conical field known as Snell's window, whose angular diameter is twice the critical angle (cf. Fig. 6). The field of view above

PKS 1741-03 (962 words) [view diff] exact match in snippet view article find links to article

weeks to months. During its ESE period, there was an increase in its angular diameter by 0.7 milliarcsecond. When observed on timescales of few months, PKS

Solar eclipse of July 16, 2186 (1,585 words) [view diff] exact match in snippet view article find links to article

its angular diameter nearly as small as possible). This occurs around July 6th. The Moon being almost exactly at perigee (making its angular diameter as

WASP-178b (1,491 words) [view diff] case mismatch in snippet view article find links to article

1086/319000. S2CID 122558713. Davis, J.; et al. (October 2010). "The Angular Diameter and Fundamental Parameters of Sirius A". Publications of the Astronomical

List of instrument-resolved minor planets (2,527 words) [view diff] exact match in snippet view article find links to article

2012-02-25, retrieved 2011-07-29 Worden, S. P.; et al. (January 1979), "Angular diameter of the asteroids Vesta and Pallas determined from speckle observations"

List of nearest supergiants (4,976 words) [view diff] exact match in snippet view article find links to article

{(5772/4,150)^{4}*5,500}}=143.46\ R\odot } Using Alpha Aquarii's measured angular diameter at 3.066±0.036 milliarcseconds (mas), together with its distance to

List of nearest stars by spectral type (15,778 words) [view diff] exact match in snippet view article find links to article

retrieved multiplying angular diameter to distance; 107.5*0.00048 arcseconds*52.1 pc = 2.69 R☉. Calculated using an angular diameter of 0.801 Milliarcseconds