NGC 5402
| Galaxy NGC 5402 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Big Bear |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 13 h 58 m 16.5 s |
| declination | + 59 ° 48 ′ 52 ″ |
| Appearance | |
| Morphological type | S? |
| Brightness (visual) | 13.8 mag |
| Brightness (B-band) | 14.7 mag |
| Angular expansion | 1.3 ′ × 0.3 ′ |
| Position angle | 167 ° |
| Surface brightness | 12.6 mag / arcmin² |
| Physical data | |
| Redshift | 0.010077 ± 0.000120 |
| Radial velocity | 3021 ± 36 km / s |
|
Stroke distance v rad / H 0 |
(141 ± 10) · 10 6 ly (43.2 ± 3.1) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 24, 1789 |
| Catalog names | |
| NGC 5402 • UGC 8903 • PGC 49712 • CGCG 295-029 • MCG + 10-20-054 • IRAS 13566 + 6003 • 2MASX J13581654 + 5948524 • GC 1727 • H III 810 • h 1727 • GALEX ASC J135816.58 + 594854.3 • LDCE 1017 NED002 | |
NGC 5402 is a 13.8 mag bright radio galaxy of the Hubble type S? in the constellation Great Bear in the north star sky . It is estimated to be 141 million light years away from the Milky Way and has a diameter of about 55,000 ly.
In the same area of the sky are the galaxies NGC 5376 , NGC 5379 , NGC 5389 , NGC 5430 , among others .
The object was discovered on April 24, 1789 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as "cF, vS, R".