Astronomy:Abell 78
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Short description: Planetary nebula in the constellation of Cygnus
| Emission nebula | |
|---|---|
| Planetary nebula | |
 As Seen From Mount Lemmon Sky Center | |
| Observation data: J2000.0 epoch | |
| Right ascension | 21h 35m 29.376s[1] |
| Declination | +31° 41m 45.6s[1] |
| Constellation | Cygnus |
| Physical characteristics | |
| Radius | 1.4 ly |
| Designations | PK 081-14.1, PN G 081.2-14.9, Abel 64, ARO 174, 2MASS J21352938+3141453, CSI+31-21334, UBV 18570, UBV M 44681 |
Abell 78 is a planetary nebula located in the constellation of Cygnus. It has a fainter halo consisting mostly hydrogen, and an inner elliptical ring that is mostly made of helium.
The central star of the planetary nebula has a spectral type of [WC5], similar to that of a carbon-rich Wolf–Rayet star.[1]
Gallery
An unusual type of Planetary Nebula
References
- ↑ 1.0 1.1 1.2 González-Santamaría, I.; Manteiga, M.; Manchado, A.; Ulla, A.; Dafonte, C.; López Varela, P. (2021). "Planetary nebulae in Gaia EDR3: Central star identification, properties, and binarity". Astronomy & Astrophysics 656: A51. doi:10.1051/0004-6361/202141916. Bibcode: 2021A&A...656A..51G.
External links
- [1]
- https://www.astronomy-mall.com/Adventures.In.Deep.Space/abellcat.htm
- NOAO>Outreach>Planetary Nebula Sampler: Abell 78
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