NGC 138
| Galaxy NGC 138 |
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|---|---|
![SDSS image from NGC 138 & PGC 212536 (left) [1]](https://de.wikipedia.org/wiki/Datei:NGC138_-_SDSS_DR14.jpg)
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| SDSS image of NGC 138 & PGC 212536 (l.) | |
| AladinLite | |
| Constellation | fishes |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 00 h 30 m 59.2 s |
| declination | + 05 ° 09 ′ 35 ″ |
| Appearance | |
| Morphological type | Sa: |
| Brightness (visual) | 13.7 mag |
| Brightness (B-band) | 14.6 mag |
| Angular expansion | 1.3 ′ × 0.6 ′ |
| Position angle | 175 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Affiliation | WBL 11 |
| Redshift | 0.039674 ± 0.000103 |
| Radial velocity | +11,894 ± 31 km / s |
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Stroke distance v rad / H 0 |
(536 ± 38) · 10 6 ly (164.4 ± 11.5) Mpc |
| history | |
| discovery | Albert Marth |
| Discovery date | August 29, 1864 |
| Catalog names | |
| NGC 138 • UGC 308 • PGC 1889 • CGCG 409-023 • MCG + 01-02-016 • 2MASX J00305921 + 0509350 • GC 5104 • GALEX ASC J003059.34 + 050934.0 | |
NGC 138 is a spiral galaxy of Hubble type Sa in the constellation Pisces on the ecliptic . It is estimated to be 536 million light years from the Milky Way and about 205,000 light years in diameter.
In the same area of the sky are u. a. the galaxies NGC 139 and NGC 141 .
The object was discovered on August 29, 1864 by the German astronomer Albert Marth .