NGC 3733

NGC 3733
NGC 3733 imaged by SDSS. The glare below comes from the nearby star HD 100615 [d].
Observation data (J2000 epoch)
ConstellationUrsa Major
Right ascension11h 35m 01.6481s
Declination+54° 51′ 02.122″
Redshift0.003949±0.00000200
Heliocentric radial velocity1,184±1 km/s
Distance73.66 ± 6.46 Mly (22.583 ± 1.981 Mpc)
Group or clusterNGC 3898 group (LGG 250)
Apparent magnitude (V)12.93
Characteristics
TypeSAB(s)cd
Size~107,100 ly (32.85 kpc) (estimated)
Apparent size (V)4.8′ × 2.2′
Other designations
IRAS F11322+5507, 2MASX J11350158+5451018, UGC 6554, MCG +09-19-123, PGC 35797, CGCG 268-055, VV 459

NGC 3733 is an intermediate spiral galaxy in the constellation of Ursa Major. Its velocity with respect to the cosmic microwave background is 1,358±12 km/s, which corresponds to a Hubble distance of 65.3 ± 4.6 Mly (20.03 ± 1.41 Mpc). Additionally, nine non-redshift measurements give a farther mean distance of 73.66 ± 6.46 Mly (22.583 ± 1.981 Mpc). It was discovered by German-British astronomer William Herschel on 14 April 1789.

NGC 3733 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.

NGC 3898 group

According to A. M. Garcia, NGC 3733 is part of the NGC 3898 group (also known as LGG 250). This galaxy group has nine members, including NGC 3756, NGC 3794, NGC 3846 [fr], NGC 3846A [d], NGC 3850 [fr], NGC 3898, NGC 3982, and UGC 6894 [d].

Supernova

One supernova has been observed in NGC 3733:

See also

References

  1. 1 2 3 4 5 6 7 8 9 10 11 "Results for object NGC 3733". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 28 January 2026.
  2. ↑ "Distance Results for NGC 3733". NASA/IPAC Extragalactic Database. NASA. Retrieved 28 January 2026.
  3. ↑ Herschel, William (1802). "Catalogue of 500 New Nebulae, Nebulous Stars, Planetary Nebulae, and Clusters of Stars; with Remarks on the Construction of the Heavens". Philosophical Transactions of the Royal Society of London. 92: 477–528. Bibcode:1802RSPT...92..477H. doi:10.1098/rstl.1802.0021.
  4. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 3733". Celestial Atlas. Retrieved 28 January 2026.
  5. ↑ "NGC 3733". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 28 January 2026.
  6. ↑ Asmus, D.; Greenwell, C. L.; Gandhi, P.; Boorman, P. G.; Aird, J.; Alexander, D. M.; Assef, R. J.; Baldi, R. D.; Davies, R. I.; Hönig, S. F.; Ricci, C.; Rosario, D. J.; Salvato, M.; Shankar, F.; Stern, D. (2020). "Local AGN survey (LASr): I. Galaxy sample, infrared colour selection, and predictions for AGN within 100 MPC". Monthly Notices of the Royal Astronomical Society. 494 (2): 1784. arXiv:2003.05959. Bibcode:2020MNRAS.494.1784A. doi:10.1093/mnras/staa766.
  7. ↑ 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.
  8. ↑ "LGG 250". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 28 January 2026.
  9. ↑ Wild, P.; Faber, S. (1980). "Supernovae". International Astronomical Union Circular (3462): 1. Bibcode:1980IAUC.3462....1W.
  10. ↑ "SN 1980D". Transient Name Server. IAU. Retrieved 28 January 2026.
  11. ↑ Kirshner, R.; Canizares, C.; Kriss, G.; Johns, M. (1980). "Supernova in NGC 3733". International Astronomical Union Circular (3464): 2. Bibcode:1980IAUC.3464....2K.
  12. ↑ Zach, L. A. (1986). "Observations of supernovae 1980d and 1980k". Nauchnye Informatsii. 61: 148. Bibcode:1986NInfo..61Q.148Z.
  13. ↑ Kimeridze, G. N.; Tsvetkov, D. Yu. (1989). "Light curves of the type II supernovas 1980D and 1985L". Astrophysics. 31 (1): 423. Bibcode:1989Ap.....31..423K. doi:10.1007/BF01004386.