NGC 2441

NGC 2441
NGC 2441 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationCamelopardalis
Right ascension07h 51m 54.772s [1]
Declination+73° 00′ 56.42″[1]
Redshift0.01157[1]
Heliocentric radial velocity3450 km/s[1]
Distance180 million ly[2]
Group or clusterNGC 2523 Group
Apparent magnitude (B)12.7[1]
Characteristics
TypeSBc[1]
Size~117,900 ly (36.14 kpc) (estimated)[3]
Apparent size (V)2.633 x 1.159 arcmin[1]
Other designations
IRAS 07460+7308, 2MASX J07515477+7300564, UGC 4036, MCG +12-08-015, PGC 22031, CGCG 331-017

NGC 2441 is a barred spiral galaxy located in the northern constellation of Camelopardalis.[2] Its velocity with respect to the cosmic microwave background is 3492 ± 2 km/s, which corresponds to a Hubble distance of 168.0 ± 11.8 Mly (51.51 ± 3.61 Mpc).[3] In addition, 16 non-redshift measurements give a distance of 176.16 ± 16.80 Mly (54.012 ± 5.151 Mpc).[4] The galaxy was discovered by German astronomer Wilhelm Tempel on 8 August 1882.[5]

According to A.M. Garcia, NGC 2441 is a member of the NGC 2523 galaxy group (also known as LGG 154).[6] This group contains five galaxies, including NGC 2523, NGC 2550A, UGC 4041, and UGC 4199.

One supernova has been observed in NGC 2441. SN1995E (type Ia, mag. 15)[7] was discovered by Alessandro Gabrielcic on 20 February 1995, and observations suggested it may display a light echo, where light from the supernova is reflected from matter along our line of sight, making it appear to "echo" outwards from the source.[2]

  1. ^ a b c d e f g "Search Results for NGC 2441". simbad.u-strasbg.fr/simbad/. SIMBAD. Retrieved 25 June 2014.
  2. ^ a b c "A curious supernova in NGC 2441". ESA/Hubble Picture of the Week. ESA/Hubble. Retrieved 25 June 2014.
  3. ^ a b "Results for object NGC 2441". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 17 November 2024.
  4. ^ "Distance Results for NGC 2441". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 17 November 2024.
  5. ^ Seligman, Courtney. "NGC 2441". Celestial Atlas. Retrieved 17 November 2024.
  6. ^ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.
  7. ^ "SN SN1995E". Transient Name Server. IAU. Retrieved 17 November 2024.