NGC 397
| Galaxy data from NGC 397 |
|
|---|---|
![NGC 394, NGC 392 & NGC 397 [1] (from top to bottom) SDSS image](https://de.wikipedia.org/wiki/Datei:NGC392_-_NGC394_-_NGC_397_-_SDSS_DR14.png)
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| NGC 394, NGC 392 & NGC 397 (. V. O. N. U) SDSS uptake | |
| AladinLite | |
| Constellation | fishes |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 01 h 08 m 31.1 s |
| declination | + 33 ° 06 ′ 33 ″ |
| Appearance | |
| Morphological type | E. |
| Brightness (visual) | 14.8 mag |
| Brightness (B-band) | 15.8 mag |
| Angular expansion | 0.7 ′ × 0.5 ′ |
| Position angle | 54 ° |
| Surface brightness | 13.7 mag / arcmin² |
| Physical data | |
| Affiliation | WBL 26 |
| Redshift | 0.016661 ± 0.000077 |
| Radial velocity | 4995 ± 23 km / s |
|
Stroke distance v rad / H 0 |
(230 ± 16) x 10 6 ly (70.5 ± 4.9) Mpc |
| history | |
| discovery | Robert Stawell Ball |
| Discovery date | December 6, 1866 |
| Catalog names | |
| NGC 397 • PGC 4051 • CGCG 501-096 • MCG + 05-03-64 • 2MASX J01083108 + 3306329 • GC 5151 • GALEX ASC J010831.00 + 330632.2 • KTG 3C | |
NGC 397 is an elliptical galaxy of Hubble type S0 in the constellation Pisces on the ecliptic . It is an estimated 230 million light years from the Milky Way and about 45,000 light years in diameter.
Together with NGC 392 and NGC 394 , it forms the isolated galaxy trio KTG 3 .
The object was discovered on December 6, 1866 by the Irish astronomer Robert Stawell Ball .