PGC 42725
| Galaxy LEDA / PGC 42725 |
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|---|---|
![LEDA 42725, NGC 4644 & LEDA 2816018 [1] SDSS mount](https://de.wikipedia.org/wiki/Datei:NGC4644_-_SDSS_DR14.jpg)
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| LEDA 42725, NGC 4644 & LEDA 2816018 SDSS Recording | |
| AladinLite | |
| Constellation | Big Bear |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 42 m 52.650 s |
| declination | + 55 ° 08 ′ 44.90 ″ |
| Appearance | |
| Morphological type | S? |
| Brightness (visual) | 15.1 mag |
| Brightness (B-band) | 15.8 mag |
| Angular expansion | 0.90 ′ × 0.2 ′ |
| Position angle | 135 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 4686 group LGG 300 |
| Redshift | 0.016039 ± 0.000006 |
| Radial velocity | 4808 ± 2 km / s |
|
Stroke distance v rad / H 0 |
(219 ± 15) x 10 6 ly (67.1 ± 4.7) Mpc |
| history | |
| Catalog names | |
| NGC 4644B • UGC 7887 NS01 • PGC 42725 • CGCG 270-014 N02 • MCG + 09-21-032 • 2MASX J12425272 + 5508445 • SDSS J124252.64 + 550844.9 • KPG 352B • HOLM 447B | |
LEDA / PGC 42725 (also NGC 4644B ) is a spiral galaxy of the Hubble type Sc in the constellation Great Bear in the northern sky . It is estimated to be 219 million light years from the Milky Way and about 60,000 light years across. Together with NGC 4644 , it forms the gravitationally bound galaxy pair Holm 447 or KPG 352 and is a member of the NGC 4686 group ( LGG 300 ).
The galaxies NGC 4669 and NGC 4675 are located in the same area of the sky .