NGC 7662

NGC 7662 (also known as the Blue Snowball Nebula, Snowball Nebula, and Caldwell 22) is a planetary nebula located in the constellation Andromeda.

NGC 7662
Emission nebula
Planetary nebula
A Hubble Space Telescope (HST) image of NGC 7662.
Credit: HST/NASA/ESA.[1]
Observation data: J2000 epoch
Right ascension23h 25m 54s[2]
Declination+42° 32′ 6″[2]
Distance~2000-6000 ly
Apparent magnitude (V)8.6[3]
Apparent dimensions (V)37″
ConstellationAndromeda
Physical characteristics
Radius0.8 ly
DesignationsPK 106-17 1, GCRV 14695, PN ARO 20, Blue Snowball Nebula, Snowball Nebula, Caldwell 22

NGC 7662 is a popular planetary nebula for casual observers. A small telescope will reveal a star-like object with slight nebulosity. A 6" telescope with a magnification around 100x will reveal a slightly bluish disk, while telescopes with a primary mirror at least 16" in diameter may reveal slight color and brightness variations in the interior.

See also

References
  1. The Hubble European Space Agency Information Centre Hubble picture of NGC 7662 Archived 2007-09-27 at the Wayback Machine
  2. "NGC 7662". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2007-04-10.
  3. Dunlop, Storm (2005). Atlas of the Night Sky. Collins. ISBN 978-0-00-717223-8.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.