NGC 4750
| Galaxy NGC 4750 |
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|---|---|
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| High-resolution image from the Hubble Space Telescope of the spiral galaxy NGC 4750 | |
| AladinLite | |
| Constellation | Dragon |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 50 m 07.3 s |
| declination | + 72 ° 52 ′ 29 ″ |
| Appearance | |
| Morphological type | (R) SA (rs) ab / LINER |
| Brightness (visual) | 11.2 mag |
| Brightness (B-band) | 12.1 mag |
| Angular expansion | 2.1 ′ × 1.9 ′ |
| Position angle | 147 ° |
| Surface brightness | 12.6 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 4750 group LGG 303 |
| Redshift | 0.005414 ± 0.000023 |
| Radial velocity | 1623 ± 7 km / s |
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Stroke distance v rad / H 0 |
(79 ± 6) · 10 6 ly (24.2 ± 1.7) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | November 8, 1798 |
| Catalog names | |
| NGC 4750 • UGC 7994 • PGC 43426 • CGCG 335-025 • MCG + 12-12-019 • IRAS 12483 + 7308 • GC 3270 • H IV 78 • h 1463 • GALEX ASC J125007.11 + 725227.4 • LDCE 902 NED012 | |
NGC 4750 is an 11.2 mag bright spiral galaxy with an active nucleus of the Hubble type Sa in the constellation Dragon in the northern sky . It is about 79 million light-years from the Milky Way and about 45,000 light-years across.
Together with NGC 4648 , NGC 4693 , NGC 4749 , PGC 41947 , PGC 42818 , PGC 43975 and PGC 44672 , it forms the NGC 4750 group .
The object was discovered on November 8, 1798 by Wilhelm Herschel with an 18.7-inch reflector telescope, which it marked with “cB, R, about 1.5 ′ diameter. Somewhat approaching to a planetary nebula, with a strong hazy border ”.