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searching for Mark Armstrong (astronomer) 1 found (12 total)

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NGC 2770 (835 words) [view diff] no match in snippet view article find links to article

observed in NGC 2770: SN 1999eh (type Ib, mag. 17.5) was discovered by Mark Armstrong on 12 October 1999. SN 2007uy (type Ib, mag. 17.2) was discovered by