NGC 721 (other designations - UGC 1376 , MCG 6-5-43 , ZWG 522.56 , IRAS01517 + 3908 , PGC 7097 ) is a galaxy in the constellation Andromeda .
| NGC 721 | |
|---|---|
| Galaxy | |
| Research history | |
| Discoverer | Henry Louis D'Arre |
| opening date | August 27, 1862 |
| Designations | NGC 721 , UGC 1376 , MCG 6-5-43 , ZWG 522.56 , IRAS01517 + 3908 , PGC 7097 |
| Observational data ( Age J2000.0 ) | |
| Constellation | Andromeda |
| Right ascension | |
| Declination | |
| Visible dimensions | 1.7 '× 1.0' |
| Apparent magnitude m V | 13.3 |
| Photographic magnitude m B | 14.1 |
| Characteristics | |
| Type of | Sbbc |
| Radial velocity | |
| Redshift | +0.018566 ± 0.000180 |
| Distance | |
| Angular position | 135 ° |
| Surface brightness | 13.7 |
This object is one of those listed in the original edition of the New General Catalog .
See also
- List of Messier objects
- New shared directory
Links
- Information in English and French from the original “ New General Catalog ”
- Information (Eng.) From the Revised New General Catalog
- SIMBAD
- VizieR (English)
- NASA / IPAC Extragalactic Database
- NGC 721 Publication List
- ↑ Giovanelli R. , Haynes M. P. A Digital Archive of H i 21 Centimeter Line Spectra of Optically Targeted Galaxies // The Astrophysical Journal : Supplement Series - 2005.- T. 160, no. 1. - S. 149–162. - ISSN 0067-0049 ; 1538-4365 - doi: 10.1086 / 431550
- ↑ 1 2 R. Brent Tully, Courtois H. M., Sorce J. G. Cosmicflows-3 // Astron. J. / J. G. III - IOP Publishing , 2016 .-- Vol. 152, Iss. 2. - P. 50–50. - ISSN 0004-6256 ; 1538-3881 - doi: 10.3847 / 0004-6256 / 152/2/50
- ↑ Courtois HM, Tully RB, Makarov DI et al. Cosmic flows: Green Bank Telescope and Parkes HI observations // Mon. Not. R. Astron. Soc. / D. Flower - OUP , 2011 .-- Vol. 414. - P. 2005–2016. - ISSN 0035-8711 ; 1365-2966 - doi: 10.1111 / j.1365-2966.2011.18515.x