NGC 1640
| Galaxy NGC 1640 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Eridanus |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 04 h 42 m 14.5 s |
| declination | -20 ° 26 ′ 05 ″ |
| Appearance | |
| Morphological type | SB (r) b |
| Brightness (visual) | 11.6 mag |
| Brightness (B-band) | 12.4 mag |
| Angular expansion | 2.7 ′ × 2.3 ′ |
| Position angle | 45 ° |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Redshift | 0.005324 ± 0.000244 |
| Radial velocity | 1592 ± 73 km / s |
|
Stroke distance v rad / H 0 |
(66 ± 5) x 10 6 ly (20.2 ± 1.4) Mpc |
| history | |
| discovery | Ormond Stone |
| Discovery date | December 11, 1885 |
| Catalog names | |
| NGC 1640 • PGC 15850 • ESO 551-027 • MCG -03-12-018 • IRAS 04400-2031 • 2MASX J04421453-2026052 • SGC 044004-2031.7 • HIPASS J0442-20 | |
NGC 1640 is a barred spiral galaxy of the Hubble type SBab in the constellation Eridanus in the southern sky . It is an estimated 66 million light years away from the Milky Way and about 55,000 light years in diameter .
The Type Iac supernova SN 1990aj was observed here.
The object was discovered by Ormond Stone on December 11, 1885 using a 26-inch refractor.
Web links
Commons : NGC 1640 - collection of images, videos, and audio files
