NGC 1661
| Galaxy NGC 1661 |
|
|---|---|
|
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| AladinLite | |
| Constellation | Orion |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 04 h 47 m 07.6 s |
| declination | -02 ° 03 ′ 16 ″ |
| Appearance | |
| Morphological type | SA (s) bc / pec: |
| Brightness (visual) | 13.2 mag |
| Brightness (B-band) | 14.0 mag |
| Angular expansion | 1.4 ′ × 0.9 ′ |
| Position angle | 35 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Redshift | 0.029654 ± 0.000013 |
| Radial velocity | 8890 ± 4 km / s |
|
Stroke distance v rad / H 0 |
(394 ± 27) x 10 6 ly (120.7 ± 8.4) Mpc |
| history | |
| discovery | Édouard Stephan |
| Discovery date | December 21, 1881 |
| Catalog names | |
| NGC 1661 • UGC 3166 • PGC 16000 • CGCG 394-009 • MCG + 00-13-008 • IRAS F04446-0208 • 2MASX J04470763-0203166 • LDCE 326 NED010 | |
NGC 1661 is a spiral galaxy of Hubble type Sbc in the constellation Orion south of the ecliptic . It is an estimated 394 million light years from the Milky Way and about 165,000 light years in diameter .
The galaxies NGC 1653 , NGC 1654 , NGC 1657 are located in the same area of the sky .
The object was discovered by Édouard Stephan on December 21, 1881 .