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| Nebula | |
|---|---|
.png) Sh 2-312 seen very faintly, Gamma Pyxidis in lower-right corner | |
| Observation data: J2000 epoch | |
| Right ascension | 08h 59m 12s |
| Declination | −25° 41′ 00″[1] |
| Apparent magnitude (V) | 17.82 |
| Apparent dimensions (V) | 12° x 3° |
| Constellation | Pyxis |
| Designations | LBN 1077 |
Sh 2-312 is a nebula in the southern constellation of Pyxis. It is very large and diffuse, making it largely ignored and unstudied outside of its relation to the Gum Nebula. Sh 2-312 is located approximately 56 parsecs away from RCW 22,[2] another nebula postulated to be a part of the larger Gum Nebula,[3] which is itself estimated to be approximately 300 parsecs in width based on angular diameter approximation.[4][5] It responds well to Hydrogen-alpha filters; however, it requires extended exposure time to become visible during observation.[6]
References
- ↑ "SIMBAD query result".
- ↑ "Sharpless (Sh2) - Astrobasics". 13 September 2022.
- ↑ Chanot, A.; Sivan, J. P. (1983). "The GUM nebula : New photometric and spectrophotometric results". Astronomy and Astrophysics. 121: 19. Bibcode:1983A&A...121...19C.
- ↑ "Sh 2-312".
- ↑ Blitz, L.; Fich, M.; Stark, A. A. (1982). "Catalogue of CO radial velocities toward galactic HII regions". The Astrophysical Journal Supplement Series. 49: 183. Bibcode:1982ApJS...49..183B. doi:10.1086/190795.
- ↑ "CCD Images of the Sharpless Catalog".
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