NGC 6790

NGC 6790
Emission nebula
Planetary nebula
Hubble Space Telescope image of NGC 6790
Observation data: J2000 epoch
Right ascension19h 22m 56.966s[1]
Declination+1° 30′ 46.46″[1]
Distance19 kly (5.7 kpc)[2] ly
Apparent magnitude (V)10.45[1]
Apparent dimensions (V)4″ × 3″[2]
ConstellationAquila
DesignationsBD+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 the equatorial constellation of Aquila. Imaging by the Hubble Space Telescope shows elongated shells surrounding the central star. The distance to this nebula is poorly known, but is estimated at 19 kilolight-years, and it is roughly 6,000 years old. The expansion velocity of the neutral hydrogen component is in the range 15−19 km s−1.[2] The central star is a white dwarf with a temperature of around 73,500 K and a photographic magnitude of 11.1. It has a mass of 0.6 M☉, having evolved from a star with a mass about the same as the Sun.[4]

  1. ^ a b c Cite error: The named reference Høg2000 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Kang2009 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference simbad was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Aller1996 was invoked but never defined (see the help page).