| Type | Binary Star |
|---|---|
| Magnitude | 4.9 | Right Ascension | 3h 0' 52.2" (2000) |
| Declination | 52° 21' 6" N |
| Constellation | Perseus |
| Description | Binary 5.22/6.74 12" 86° |
Andrew Cooper
Aug 20, 2021 Waikoloa, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 76x
Seeing: 6 Transparency: 6 Moon: 0%
Σ 331 is a very pretty binary, HR 890 is the 5.2 magnitude primary, with HR 891, the 6.7 magnitude companion easily visible 12" east, both white, Gaia DR2 data shows matching parallax and proper motions for the pair
| Gamma Persei | HD 18537 | HD 18538 |
| HD 18964 | Tau Persei |
Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.
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