Astronomy:Gamma Sagittarii
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The Bayer designation γ Sagittarii (Gamma Sagittarii) is shared by two stars in the constellation Sagittarius:
- γ1 Sagittarii, a Cepheid variable better-known as W Sagittarii
- γ2 Sagittarii (Alnasl), an orange giant
| star | V mag. | Bayer[1] (1603) |
Flamsteed[2] (1725) |
Bevis[3] (c.1750) |
BSC5 (1991) |
Tirion [4](1992) |
Kostjuk[5] (2002) |
Sinnott[6] (2006) |
|---|---|---|---|---|---|---|---|---|
| W Sgr | 4.66 | γ | γ1 | ― | γ1 (W)[7] |
W | W | W |
| 10 Sgr | 2.99 | γ2 | γ | γ2 | γ | γ | γ |
- "-": none
The two stars are separated by slightly under one degree.
References
- ↑ Bayer, J., (1603) Uranometria.
- ↑ Flamsteed, J., (1725) "Catalogus Britannicus Stellarum Innerantium", Historia Coelestis Britannica, vol.3.
- ↑ Bevis, J., (c.1750) Uranographia Britannica.
- ↑ Pasachoff, J. M., Tirion, W., (1992) A Field Guide to the Star and Planets, (3rd ed.) The Peterson Field Guide Series, Hougton Miffin Company, p. 297 (chart 42).
- ↑ *Kostjuk, N. D. (2002). "HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index". http://cdsweb.u-strasbg.fr/viz-bin/Cat?IV/27. Retrieved 2018-09-30.
- ↑ Sinnott, R. W., (2006) Pocket Sky Atlas, Sky Publishing Corporation, chart 67.
- ↑ For variable star name.
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