NGC 918
| Galaxy NGC 918 |
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|---|---|
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| Image of the spiral galaxy NGC 918 with the help of the 81 cm reflector telescope of the Mount Lemmon Observatory . | |
| AladinLite | |
| Constellation | Aries |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 02 h 25 m 50.8 s |
| declination | + 18 ° 29 ′ 46 ″ |
| Appearance | |
| Morphological type | SAB (rs) c: |
| Brightness (visual) | 12.4 mag |
| Brightness (B-band) | 13.1 mag |
| Angular expansion | 3.5 ′ × 2 ′ |
| Position angle | 158 ° |
| Surface brightness | 14.4 mag / arcmin² |
| Physical data | |
| Redshift | 0.005027 ± 0.000010 |
| Radial velocity | 1507 ± 3 km / s |
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Stroke distance v rad / H 0 |
(71 ± 5) · 10 6 ly (21.7 ± 1.5) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | January 11, 1831 |
| Catalog names | |
| NGC 918 • UGC 1888 • PGC 9236 • CGCG 462-011 • MCG + 03-07-011 • IRAS 02230 + 1816 • 2MASX J02255022 + 1829561 • KARA 103 | |
NGC 918 is a barred spiral galaxy of the Hubble type SBc in the constellation Aries on the ecliptic . It is estimated to be 71 million light years from the Milky Way and about 70,000 light years in diameter.
The object was discovered on January 11, 1831 by the astronomer John Herschel with the help of his 18.7 inch reflector telescope and was later listed by Johan Dreyer in his New General Catalog .
Web links
Commons : NGC 918 - collection of images, videos, and audio files
