NGC 7718
| Galaxy NGC 7718 |
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|---|---|
![NGC 7718 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC7718_-_SDSS_DR14.jpg)
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| NGC 7718 SDSS image | |
| AladinLite | |
| Constellation | Pegasus |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 23 h 38 m 05.01 s |
| declination | + 25 ° 43 ′ 11.0 ″ |
| Appearance | |
| Morphological type | S? |
| Brightness (visual) | 14.1 mag |
| Brightness (B-band) | 15.0 mag |
| Angular expansion | 0.9 '× 0.6' |
| Position angle | 151 ° |
| Surface brightness | 13.8 mag / arcmin² |
| Physical data | |
| Redshift | 0.031498 ± 0.000113 |
| Radial velocity | 9443 ± 34 km / s |
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Stroke distance v rad / H 0 |
(430 ± 30) · 10 6 ly (131.8 ± 9.2) Mpc |
| history | |
| discovery | Albert Marth |
| Discovery date | September 6, 1863 |
| Catalog names | |
| NGC 7718 • UGC 12712 • PGC 71959 • CGCG 476-082 • MCG + 04-55-034 • 2MASX J23380501 + 2543108 • GALEX ASC J233805.04 + 254308.0 • LDCE 1590 NED003 • WISEA J233805.01 + 254311.2 | |
NGC 7718 is a galaxy of Hubble type S? in the constellation Pegasus in the northern sky . It is an estimated 430 million light years from the Milky Way and about 115,000 light years in diameter. Together with PGC 71946 , it forms an optical pair of galaxies.
The object was discovered by Albert Marth on September 6, 1863 .