NGC 778
| Galaxy NGC 778 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | triangle |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 02 h 00 m 19.4 s |
| declination | + 31 ° 18 ′ 47 ″ |
| Appearance | |
| Morphological type | S0: |
| Brightness (visual) | 13.2 mag |
| Brightness (B-band) | 14.2 mag |
| Angular expansion | 1.1 ′ × 0.5 ′ |
| Position angle | 150 ° |
| Surface brightness | 12.4 mag / arcmin² |
| Physical data | |
| Affiliation | possible NGC 777 group |
| Redshift | 0.018123 ± 0.000097 |
| Radial velocity | 5433 ± 29 km / s |
|
Stroke distance v rad / H 0 |
(248 ± 17) · 10 6 ly (76.1 ± 5.3) Mpc |
| history | |
| discovery | Truman Henry Safford |
| Discovery date | November 5, 1866 |
| Catalog names | |
| NGC 778 • UGC 1480 • PGC 7597 • CGCG 503-069 • MCG + 05-05-039 • 2MASX J02001945 + 3118467 • GC 5205 • GALEX ASC J020019.37 + 311849.0 • LDCE 129 NED012 | |
NGC 778 is a lenticular galaxy of the Hubble-type S0 in the constellation Triangle in the northern sky . It is estimated to be 248 million light years away from the Milky Way and has a diameter of about 80,000 ly.
In the same area of the sky are the galaxies NGC 769 , NGC 777 , NGC 783 , NGC 785 , among others .
The object was discovered on November 5, 1866 by the American astronomer Truman Henry Safford .
Web links
Commons : NGC 778 - collection of images, videos, and audio files
- Auke Slotegraaf: NGC 778. Deep Sky Observer's Companion, accessed on March 14, 2016 (English).
- NGC 778. DSO Browser, accessed March 10, 2016 .