NGC 5440
| Galaxy NGC 5440 |
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|---|---|
|
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| SDSS recording | |
| AladinLite | |
| Constellation | Hunting dogs |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 14 h 03 m 01.0 s |
| declination | + 34 ° 45 ′ 28 ″ |
| Appearance | |
| Morphological type | Sat |
| Brightness (visual) | 12.3 mag |
| Brightness (B-band) | 13.2 mag |
| Angular expansion | 2.2 ′ × 1.0 ′ |
| Position angle | 50 ° |
| Surface brightness | 13.0 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 370 |
| Redshift | 0.012305 ± 0.000020 |
| Radial velocity | (3689 ± 6) km / s |
|
Stroke distance v rad / H 0 |
(168 ± 12) · 10 6 ly (51.5 ± 3.6) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | May 1, 1785 |
| Catalog names | |
| NGC 5440 • UGC 8963 • PGC 50042 • CGCG 191-040 • MCG + 06-31-052 • 2MASX J14030101 + 3445281 • GC 3754 • H II 416 • h 1739 • GALEX ASC J140300.99 + 344528.3 • HOLM 576A • LDCE 1021 NED010 | |
NGC 5440 is a 12.3 likes bright spiral galaxy of Hubble type Sa in the constellation Canes Venatici. It is an estimated 168 million light years away from the Milky Way and has a diameter of about 110,000 ly. Together with NGC 5441 , it forms the galaxy pair Holm 576 .
In the same area of the sky are u. a. the galaxies NGC 5399 , NGC 5421 , NGC 5444 , NGC 5445 .
The Type Ia supernova SN 1998D was observed here.
The object was discovered on May 1, 1785 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as "pB, pL, irregularly extended, mbM".
NGC 5440 group ( LGG 370 )
| Galaxy | Alternative name | Distance / million Lj |
|---|---|---|
| NGC 5440 | PGC 50042 | 168 |
| NGC 5399 | PGC 49799 | 167 |
| NGC 5444 | PGC 50080 | 179 |
| NGC 5445 | PGC 50090 | 177 |
| PGC 50116 | UGC 8984 | 174 |