NGC 3632 (also known as Caldwell 40) and NGC 3626[6] is an unbarred lenticular galaxy[5] and Caldwell object in the constellation Leo. It was discovered by William Herschel, on 14 March 1784. It shines at magnitude +10.6[6]/+10.9. Its celestial coordinates are RA 11h 20.1m , dec +18° 21′. It is located near the naked-eye-class A4 star Zosma, as well as galaxies NGC 3608, NGC 3607, NGC 3659, NGC 3686, NGC 3684, NGC 3691, NGC 3681, and NGC 3655. Its dimensions are 2′.7 × 1′.9.[6] The galaxy belongs to the NGC 3607 group some 70 million light-years distant, itself one of the many Leo II groups.[7]
| NGC 3632 | |
|---|---|
 SDSS image of NGC 3632 | |
| Observation data (J2000 epoch) | |
| Constellation | Leo |
| Right ascension | 11h 20m 03.794s[1] |
| Declination | +18° 21′ 24.45″[1] |
| Redshift | 0.004977[2] |
| Heliocentric radial velocity | 1488 km/s[2] |
| Distance | 74.72 ± 0.39 Mly (22.91 ± 0.12 Mpc)[3] |
| Apparent magnitude (V) | 10.98[4] |
| Apparent magnitude (B) | 11.80[4] |
| Characteristics | |
| Type | (R)SA0+(rs)[5] |
| Other designations | |
| Caldwell 40, NGC 3626, UGC 6343, MCG +03-29-032, PGC 34684[2] | |
Notes
References
- Bratton, Mark (2011). The Complete Guide to the Herschel Objects. Cambridge University Press. ISBN 978-0-521-76892-4.
- Pasachoff, Jay M. (2000). "Atlas of the Sky". Stars and Planets. New York, NY: Peterson Field Guides. ISBN 978-0-395-93432-6.
- Caldwell-Moore, Sir Patrick (2003). Firefly Atlas of the Universe. Firefly Books Limited. ISBN 978-1-55297-819-1.
External links
- NGC 3632 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- Frommert, Harmut. "Revised NGC Data for NGC 3626". Spider. Students for the Exploration and Development of Space.