NGC 5993
| Galaxy NGC 5993 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Bear keeper |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 15 h 44 m 27.6 s |
| declination | + 41 ° 07 ′ 15 ″ |
| Appearance | |
| Morphological type | SB (r) b: / LINER / HII |
| Brightness (visual) | 13.2 mag |
| Brightness (B-band) | 13.9 likes |
| Angular expansion | 1.2 ′ × 0.9 ′ |
| Position angle | 140 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Redshift | 0.031905 ± 0.000090 |
| Radial velocity | (9565 ± 27) km / s |
|
Stroke distance v rad / H 0 |
(433 ± 30) x 10 6 ly (132.9 ± 9.3) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | March 18, 1787 |
| Catalog names | |
| NGC 5993 • UGC 10007 • PGC 55918 • CGCG 222-048 • MCG + 07-32-50 • IRAS 15426 + 4116 • GC 4137 • H III 636 • h 1937 • | |
NGC 5993 is a barred spiral (and possibly also a Quasar ) with active galaxies core from the Hubble type SB (r) b in the constellation Bootes . It is an estimated 433 million light years from the Milky Way and has a disk diameter of about 155,000 ly.
The object was discovered on March 18, 1787 by Wilhelm Herschel with an 18.7-inch reflector telescope, which she labeled “Two. The nf vF, vS, verified with 300 power. The sp discovered with 300 power, eF, S, iF ”. The former galaxy is NGC 5992 .