NGC 7250

NGC 7250
NGC 7250 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationLacerta
Right ascension22h 18m 17.776s
Declination+40° 33′ 44.66″
Redshift0.0039
Heliocentric radial velocity1,168 km/s
Distance49.99 ± 14.37 Mly (15.328 ± 4.407 Mpc)
Apparent magnitude (V)12.58
Apparent magnitude (B)13.22
Characteristics
TypeIrr
Mass4.7×108 M☉
Size~42,300 ly (12.97 kpc) (estimated)
Apparent size (V)1.7′ × 0.8′
Other designations
PGC 68535, UGC 11980, MCG+07-45-024, Mrk 907, Z 530-22

NGC 7250 is an irregular galaxy located in the constellation Lacerta. It is a blue-colored galaxy with bright bursts of star formation: its star-forming rate is more than an order of magnitude greater than that of the Milky Way. It was discovered by German-British astronomer William Herschel on 8 November 1790.

The brighter star located in front of the galaxy is named TYC 3203-450-1, and is barely studied. It is about a million times closer to Earth than it the galaxy itself.

Supernova

One supernova has been observed in NGC 7250. SN 2013dy (Type Ia, mag. 17) was discovered by the Lick Observatory Supernova Search (LOSS) on 10 July 2013. It was detected about 2.4 hours after the explosion, making it the earliest-known detection of a supernova at the time.

See also

References

  1. 1 2 "A matter of distance". www.spacetelescope.org. Retrieved 24 April 2017.
  2. 1 2 Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
  3. 1 2 3 4 "NGC 7250". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 24 April 2017.
  4. 1 2 3 "NED results for object NGC 7250". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 24 April 2017.
  5. 1 2 Pan, Y.-C.; Foley, R. J.; Kromer, M.; Fox, O. D.; Zheng, W.; Challis, P.; Clubb, K. I.; Filippenko, A. V.; Folatelli, G.; Graham, M. L.; Hillebrandt, W.; Kirshner, R. P.; Lee, W. H.; Pakmor, R.; Patat, F.; Phillips, M. M.; Pignata, G.; Röpke, F.; Seitenzahl, I.; Silverman, J. M.; Simon, J. D.; Sternberg, A.; Stritzinger, M. D.; Taubenberger, S.; Vinko, J.; Wheeler, J. C. (2015). "500 days of SN 2013dy: Spectra and photometry from the ultraviolet to the infrared". Monthly Notices of the Royal Astronomical Society. 452 (4): 4307. arXiv:1504.02396. Bibcode:2015MNRAS.452.4307P. doi:10.1093/mnras/stv1605. S2CID 119304628.
  6. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 7250". Celestial Atlas. Retrieved 22 August 2025.
  7. ↑ Hille, Karl (2017-04-28). "Hubble's Bright Shining Lizard Star". NASA. Retrieved 2017-04-30.
  8. ↑ Casper, C.; Zheng, W.; Li, W.; Filippenko, A. V.; Cenko, S. B.; Ciabattari, F.; Elenin, L.; Molotov, I.; Balam, D. D.; Graham, M. L.; Hsiao, E. Y.; Zhang, J. -J.; Wang, X. -F.; Clubb, K. I.; Fox, O. D.; Kelley, P. L.; Silverman, J. M. (2013). "Supernova 2013dy in NGC 7250 = PSN J22181760+4034096". Central Bureau Electronic Telegrams (3588): 1. Bibcode:2013CBET.3588....1C.
  9. ↑ "SN 2013dy". Transient Name Server. IAU. Retrieved 21 August 2025.
  10. ↑ Zheng, Weikang; Silverman, Jeffrey M.; Filippenko, Alexei V.; Kasen, Daniel; Nugent, Peter E.; Graham, Melissa; Wang, Xiaofeng; Valenti, Stefano; Ciabattari, Fabrizio; Kelly, Patrick L.; Fox, Ori D.; Shivvers, Isaac; Clubb, Kelsey I.; Cenko, S. Bradley; Balam, Dave; Howell, D. Andrew; Hsiao, Eric; Li, Weidong; Howie Marion, G.; Sand, David; Vinko, Jozsef; Wheeler, J. Craig; Zhang, Jujia (2013). "THE VERY YOUNG TYPE Ia SUPERNOVA 2013dy: DISCOVERY, AND STRONG CARBON ABSORPTION IN EARLY-TIME SPECTRA". The Astrophysical Journal. 778 (1): L15. arXiv:1310.5188. Bibcode:2013ApJ...778L..15Z. doi:10.1088/2041-8205/778/1/L15. S2CID 118352094.