IC 2403
| Galaxy IC 2403 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Water snake |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 08 h 46 m 09.3 s |
| declination | -15 ° 21 ′ 25 ″ |
| Appearance | |
| Morphological type | S / HII |
| Brightness (visual) | 14.7 mag |
| Brightness (B-band) | 15.5 mag |
| Angular expansion | 0.6 ′ × 0.3 ′ |
| Position angle | 120 ° |
| Surface brightness | 12.7 mag / arcmin² |
| Physical data | |
| Redshift | 0.018089 ± 0.000130 |
| Radial velocity | 5423 ± 39 km / s |
|
Stroke distance v rad / H 0 |
(234 ± 16) · 10 6 ly (71.6 ± 5.0) Mpc |
| history | |
| discovery | Herbert Alonzo Howe |
| Discovery date | March 23, 1898 |
| Catalog names | |
| IC 2403 • PGC 90089 • IRAS 08438-1510 • 2MASX J08460933-1521252 • GALEX ASC J084609.21-152125.4 | |
IC 2403 is a spiral galaxy with extensive star formation regions of the Hubble type S in the constellation Hydra south of the ecliptic . It is estimated to be 234 million light years away from the Milky Way and has a diameter of around 40,000 ly.
In the same area of the sky is the galaxy NGC 2662 .
The object was discovered on March 23, 1898 by Herbert Alonzo Howe .