NGC 2792
| Nebula | |
|---|---|
 | |
| Observation data: J2000 epoch | |
| Right ascension | 09h 12m 26s |
| Declination | -42° 25′ 39″ |
| Constellation | Vela |
| Designations | PK 265+4.1,
ESO 314-PN6, AM 0910-421, CS=13.8, HD 79384, IRAS 09105-4213, WEB 8618, PMN J0912-4225, 2MASS J09122664-4225397 |
NGC 2792 is a planetary nebula located in the constellation Vela.[1] NGC 2792 was discovered by British astronomer John Herschel in 1835.[2]
Observation
[edit]With an apparent visual magnitude of 11.6,[3] you must use a telescope with an aperture of at least 200 mm to observe it.[4]
Characteristics
[edit]Distance, size and speed
[edit]Two very similar distances are indicated on the SIMBAD database: 3.086 ± 0.617 kpc (~10,100 ly) and approximately 3050 pc (~9,950 ly).[5]
The apparent size of the nebula is 0.350′ × 0.315, which, given the distance of 3,086 ± 617 pc and through simple calculation, equates to an actual size of 1.02 ± 0.20 al × 0 .92 ± 0.18 ly.[5]
Two identical speed values are also indicated on SIMBAD, i.e. 14.0 ± 5.0 km/s. According to a more recent publication (2023) the speed of the nebula is 12.7 ± 8 km/s.[5]
Age
[edit]The kinematic age of a planetary nebula can be estimated from its expansion speed. According to González-Santamaría and his colleagues, the expansion speed of NGC 2792 is 20 km/s, which gives it a kinematic age of 3.5 thousand years. According to a more recent publication, its expansion speed is 20.2 km/s.[6]
According to González-Santamaría, it has been approximately 50,860 years since the star left the asymptotic giant branch and the nebula enveloping it reached 1% of the mass of the progenitor.[6]
Central star
[edit]The visual magnitude of this star is equal to 16.74 and its mass is estimated at 1.163 solar masses. The radius of the nebula is estimated at 0.108 pc.[7]
See also
[edit]External links
[edit]References
[edit]- ^ "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-06-05.
- ^ "New General Catalog Objects: NGC 2750 - 2799". cseligman.com. Retrieved 2024-06-05.
- ^ "NGC 2792 - Planetary Nebula in Vela | TheSkyLive.com". theskylive.com. Retrieved 2024-06-05.
- ^ astrovalleyfield.ca http://astrovalleyfield.ca//AstronomieCompl/NGC%20et%20autres/WolfgangS/N2700_exc_web.htm. Retrieved 2024-06-05.
{{cite web}}: Missing or empty|title=(help) - ^ a b c "NGC 2792". simbad.cds.unistra.fr. Retrieved 2024-06-05.
- ^ a b Skrutskie, M. F.; Cutri, R. M.; Stiening, R.; Weinberg, M. D.; Schneider, S.; Carpenter, J. M.; Beichman, C.; Capps, R.; Chester, T.; Elias, J.; Huchra, J.; Liebert, J.; Lonsdale, C.; Monet, D. G.; Price, S. (February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256.
- ^ Wilson, R. E. (2010-01-01). "VizieR Online Data Catalog: General Catalogue of Stellar Radial Velocities (Wilson, 1953)". VizieR Online Data Catalog. 3021: III/21. Bibcode:2010yCat.3021....0W.
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