NGC 7497
| Galaxy NGC 7497 |
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|---|---|
![Image of the 81 cm reflector telescope of the Mount Lemmon Observatory, brownish in the foreground the molecular cloud MBM 54 of the Milky Way. [1] [2]](https://de.wikipedia.org/wiki/Datei:N7497s.jpg)
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| Image of the 81 cm reflector telescope of the Mount Lemmon Observatory , in the brownish foreground the molecular cloud MBM 54 of the Milky Way . | |
| AladinLite | |
| Constellation | Pegasus |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 23 h 09 m 03.4 s |
| declination | + 18 ° 10 ′ 38 ″ |
| Appearance | |
| Morphological type | SB (s) d |
| Brightness (visual) | 12.3 mag |
| Brightness (B-band) | 13.0 likes |
| Angular expansion | 4.4 ′ × 1.7 ′ |
| Position angle | 48 ° |
| Surface brightness | 14.3 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 470 |
| Redshift | 0.005697 ± 0.000007 |
| Radial velocity | 1708 ± 2 km / s |
|
Stroke distance v rad / H 0 |
(84 ± 6) · 10 6 ly (25.8 ± 1.8) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | October 15, 1784 |
| Catalog names | |
| NGC 7497 • UGC 12392 • PGC 70569 • CGCG 454-003 • MCG + 03-59-002 • IRAS 23065 + 1754 • KUG 2306 + 179 • 2MASX J23090342 + 1810378 • GC 4898 • H III 203 • h 2209 • HIPASS J2309 + 18th | |
NGC 7497 is a barred spiral galaxy of the Hubble type SBc in the constellation Pegasus in the northern sky . It is an estimated 84 million light years away from the Milky Way and about 100,000 light years in diameter.
The object was discovered on October 15, 1784 by the astronomer William Herschel with a 48 cm telescope.
Web links
- Spektrum.de : Amateur recordings [1] [2]