| Type | Multiple Star |
|---|---|
| Magnitude | 7.7 | Right Ascension | 5h 38' 34.8" (2000) |
| Declination | 2° 34' 16" S |
| Constellation | Orion |
| Description | Multiple 7.7/8.4/8.6 68"/8" 202°/269° |
| Classification | B9.5III |
Andrew Cooper
Nov 26, 2022 Waikoloa, HI (map)
28cm f/10 SCT, NexStar 11" GyPSy @ 127x
Seeing: 6 Transparency: 7 Moon: 0%
Σ 761 is a lovely trio of stars 8' northwest of σ Ori, Struve assembled this with the 7.7th magnitude HD 294271 as the primary and the delicate 8th magnitude 8" pair HD 294272 as members B and C. The σ Ori group is in a rich region 1° south of Alnitak, the entire area spectacular in the eyepiece.
All members of Σ 761 are probably members of the Sigma Orionis Association sharing the same parallax and low proper motion. The σ Ori group is in a rich region 1° south of Alnitak, the entire area spectacular in the eyepiece.
| HD 294271 | HD 294272 | HD 294272A |
| HD 294272B | Sigma Orionis | Sigma Orionis A |
| Sigma Orionis C | Sigma Orionis D | Sigma Orionis E |
Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.
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