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NGC 3632

Galaxy in the constellation Leo

NGC 3632
SDSS image of NGC 3632
Observation data (J2000 epoch)
Constellation	Leo
Right ascension	11h20m 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]

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 11^h 20.1^m , 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]

• 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.

• 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.

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