NGC 634

NGC 634
Picture created from images taken with the Wide Field Channel of Hubble's Advanced Camera for Surveys.
Observation data (J2000 epoch)
ConstellationTriangulum
Right ascension01h 38m 18.679s[1]
Declination+35° 21′ 53.47″[1]
Redshift0.016417[2]
Heliocentric radial velocity4,925 km/s[3]
Distance217.1 Mly (66.55 Mpc)[3]
Apparent magnitude (V)14.0
Characteristics
TypeSa[4]
Apparent size (V)2′.04 × 0′.55[5]
Other designations
MCG+06-04-048, UGC 1164,[6] PGC 6059

NGC 634 is a spiral galaxy, lying at a distance of 217.1 megalight-years[3] away from the Milky Way in the northern constellation of Triangulum. This object was discovered on 26 October 1876 by French astronomer Édouard Stephan.[7][8] It is inclined by an angle of 82.4° to the line of sight from the Earth, and thus is being viewed nearly edge on.[5]

Supernova SN 2006Q was reported 2.5″ east and 1.0″ north of the galactic core in NGC 634, January 24, 2006. This was most likely a type II supernova[5] and reached magnitude 18.74.[9] Another supernova explosion was reported near the galaxy on January 2, 2008. It was positioned 16.6 arcseconds west and 20.2 arcseconds north of the Galactic Center and was designated SN 2008A. This event reached a peak magnitude of 16.7 on January 3,[10] and was determined to be a type Iax supernova.[5]

  1. ^ a b Cite error: The named reference Skrutskie2006 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Kochanek2001 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Crook2007 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference ned was invoked but never defined (see the help page).
  5. ^ a b c d Cite error: The named reference Leaman2011 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference HST2011 was invoked but never defined (see the help page).
  8. ^ Seligman, Courtney. "NGC 634". Celestial Atlas. Retrieved 26 August 2024.
  9. ^ Cite error: The named reference Li2006 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Nakano2008 was invoked but never defined (see the help page).