NGC 3195

NGC 3195
Emission nebula
Planetary nebula
A Hubble Space Telescope (HST) image of NGC 3195.
Credit: HST/NASA/ESA.
Observation data: J2000 epoch
Right ascension10h 09m 20.910s[1]
Declination−80° 51′ 30.73″[1]
Distance6,440 ly (1,975 pc)[2] ly
Apparent magnitude (V)11.6[3]
Apparent dimensions (V)1.33′[2]
ConstellationChamaeleon
DesignationsCaldwell 109, Hen 2-44, Sa2-57, PK 296-20.1, PN G296.6-20.0, ESO 19-2[4]
See also: Lists of nebulae

NGC 3195 (also known as Caldwell 109) is a planetary nebula located in the southern constellation of Chamaeleon. Discovered by Sir John Herschel in 1835,[3] this 11.6 apparent magnitude[3] 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.[5]

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. An analysis of Gaia data suggests that the central star is a binary system.[6] Distance is estimated at 1.7 kpc.

  1. ^ a b Cite error: The named reference Kerber2003 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Stanghellini2008 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference cseligman was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference simbad was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference OMeara2014 was invoked but never defined (see the help page).
  6. ^ Chornay, N.; Walton, N. A.; Jones, D.; Boffin, H. M. J.; Rejkuba, M.; Wesson, R. (2021). "Towards a more complete sample of binary central stars of planetary nebulae with Gaia". Astronomy & Astrophysics. 648: A95. arXiv:2101.01800. Bibcode:2021A&A...648A..95C. doi:10.1051/0004-6361/202140288. S2CID 230770301.