NGC 7728
| Galaxy NGC 7728 |
|
|---|---|
![NGC 7728 with LEDA 214973 (left), [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC7728_-_SDSS_DR14.jpg)
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| NGC 7728 with LEDA 214973 (left), SDSS image | |
| AladinLite | |
| Constellation | Pegasus |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 23 h 40 m 00.839 s |
| declination | + 27 ° 08 ′ 01.37 ″ |
| Appearance | |
| Morphological type | E. |
| Brightness (visual) | 13.2 mag |
| Brightness (B-band) | 14.2 mag |
| Angular expansion | 1.0 '× 0.8' |
| Position angle | 75 ° |
| Surface brightness | 13.0 mag / arcmin² |
| Physical data | |
| Affiliation |
Abell 2634 WBL 721 |
| Redshift | 0.031348 ± 0.000050 |
| Radial velocity | 9398 ± 15 km / s |
|
Stroke distance v rad / H 0 |
(428 ± 30) x 10 6 ly (131.2 ± 9.2) Mpc |
| history | |
| discovery | Heinrich d'Arrest |
| Discovery date | February 16, 1862 |
| Catalog names | |
| NGC 7728 • UGC 12727 • PGC 72064 • CGCG 476-103 • MCG + 04-55-041 • 2MASX J23400080 + 2708014 • GALEX ASC J234000.76 + 270800.7 • LDCE 1590 NED009 • NVSS J234000 + 270800 | |
NGC 7728 is an elliptical galaxy from the Hubble-type E2 in Pegasus at the northern sky . It is an estimated 428 million light years from the Milky Way and about 125,000 light years across.
In the same area of the sky are u. a. the galaxies NGC 7720 , NGC 7726 , IC 5341 , IC 5342 .
The object was discovered on February 16, 1862 by Heinrich Louis d'Arrest .
