IC 4997

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Planetary Nebula
IC 4997
Photo from the Hubble Space Telescope
Photo from the Hubble Space Telescope
AladinLite
Constellation arrow
Position
equinox : J2000.0
Right ascension 20h 20m 08.8s
declination + 16 ° 43 ′ 54 ″
Appearance
Apparent brightness  (visual) 10.5 mag 
Apparent brightness  (B-band) 11.6 mag 
Angular expansion 0.22
Central star
designation HD 193538 
Apparent brightness 11 likes 
Physical data
Radial velocity −66.2 km / s 
distance 8,000 ly 
history
discovery Williamina Fleming
Date of discovery 1896
Catalog names
 IC  4997 •  PK  058-10.1 • PN G058.3-10.9 • Hen 2-464

IC 4997 is a planetary nebula in the constellation Arrow , which was discovered by the astronomer Williamina Fleming in 1896.

swell

  1. NASA / IPAC EXTRAGALACTIC DATABASE
  2. a b SEDS : IC 4997
  3. a b SIMBAD
  4. Space Telescope
  5. Seligman