NGC 3940
| Galaxy NGC 3940 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | lion |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 11 h 52 m 46.4 s |
| declination | + 20 ° 59 ′ 21 ″ |
| Appearance | |
| Morphological type | E. |
| Brightness (visual) | 12.8 mag |
| Brightness (B-band) | 13.8 mag |
| Angular expansion | 1.7 ′ × 1.6 ′ |
| Position angle | 99 ° |
| Surface brightness | 14.0 mag / arcmin² |
| Physical data | |
| Redshift | 0.021415 +/- 0.000031 |
| Radial velocity | 6420 +/- 9 km / s |
|
Stroke distance v rad / H 0 |
(285 ± 20) x 10 6 ly (87.4 ± 6.1) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | April 26, 1785 |
| Catalog names | |
| NGC 3940 • UGC 6852 • PGC 37224 • CGCG 127-089 • MCG + 04-28-082 • 2MASX J11524641 + 2059217 • GC 2599 • H III 380 • h 1004 • LDCE 836 NED055 • SDSS J115246.44 + 205921.3 | |
NGC 3940 is an elliptical galaxy of Hubble type E in the constellation Leo north of the ecliptic . It is estimated to be 285 million light years away from the Milky Way and has a diameter of around 145,000 ly.
In the same area of the sky are the galaxies NGC 3929 , NGC 3946 , NGC 3947 , NGC 3954 .
The object was discovered on April 26, 1785 by the astronomer Wilhelm Herschel .