NGC 3195

NGC 3195 (also known as Caldwell 109) is a planetary nebula located in the constellation Chamaeleon. It is the most southern of all the bright sizable planetary nebula in the sky, and remains invisible to all northern observers. Discovered by Sir John Herschel in 1835,[2] this 11.6 apparent magnitude[2] planetary nebula is slightly oval in shape, with dimensions of 40×35 arc seconds, and can be seen visually in telescopic apertures of 10.5 centimetres (4.1 in) at low magnifications.

NGC 3195
Emission nebula
Planetary nebula
A Hubble Space Telescope (HST) image of NGC 3195.
Credit: HST/NASA/ESA.
Observation data: J2000 epoch
Right ascension 10h 09m 20.9s[1]
Declination−80° 51′ 30.7″[1]
Distance5 500 ly
Apparent magnitude (V)11.6[2]
Apparent dimensions (V)40×35"
ConstellationChamaeleon
DesignationsCaldwell 109 / He2-44/ Hen 2-44 / Sa2-57 / PK 296-20.1 / PN G296.6-20.0 / ESO 19-2[1]

Spectroscopy reveals that NGC 3195 is approaching Earth at 17 kilometres per second (11 mi/s), while the nebulosity is expanding at around 40 kilometres per second (25 mi/s). The central star is listed as >15.3V or 16.1B magnitude. Distance is estimated at about 1.7 kpc.

References
  1. "NGC 3195". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2007-04-17.
  2. Seligman, Courtney. "New General Catalogue objects: NGC 3150 - 3199". cseligman.com. Retrieved 27 September 2019.


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