| Emission nebula | |
|---|---|
| Planetary nebula | |
 Hubble Space Telescope image of NGC 6790 | |
| Observation data:J2000epoch | |
| Right ascension | 19h 22m 56.966s[1] |
| Declination | +1° 30′ 46.46″[1] |
| Distance | 19 kly (5.7 kpc)[2] ly |
| Apparent magnitude (V) | 10.45[1] |
| Apparent dimensions (V) | 4″ × 3″[2] |
| Constellation | Aquila |
| Designations | BD+01 3979, HD 182083, NSV 11959[3] |
| See also:Lists of nebulae | |
NGC 6790 is a young, compact[2]planetary nebula with a high surface brightness[4] located in theequatorialconstellation ofAquila. Imaging by theHubble Space Telescope shows elongated shells surrounding the central star. The distance to this nebula is poorly known, but is estimated at 19kilolight-years, and it is roughly 6,000 years old. The expansion velocity of the neutral hydrogen component is in the range15−19 km s−1.[2] The central star is awhite dwarf with a temperature of around73,500 K and a photographic magnitude of 11.1. It has a mass of0.6 M☉, having evolved from a star with a mass about the same as theSun.[4]
Media related toNGC 6790 at Wikimedia Commons | This nebula-related article is astub. You can help Wikipedia byadding missing information. |
