n Herculis
(Redirected from 28 Herculis)
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Hercules[1] |
| Right ascension | 16h 32m 35.7s[2] |
| Declination | +5° 31′ 16″[2] |
| Apparent magnitude (V) | 5.63[3] |
| Characteristics | |
| Evolutionary stage | main sequence[4] |
| Spectral type | B9.5III[5] |
| U−B color index | −0.18[6] |
| B−V color index | −0.06[6] |
| Astrometry | |
| Radial velocity (Rv) | −23.38±0.21[2] km/s |
| Proper motion (μ) | RA: +15.556[2] mas/yr Dec.: −0.282[2] mas/yr |
| Parallax (π) | 8.5519±0.1394 mas[2] |
| Distance | 381 ± 6 ly (117 ± 2 pc) |
| Absolute magnitude (MV) | +0.27[1] |
| Details | |
| Mass | 2.75[7] M☉ |
| Radius | 2.94[7] R☉ |
| Luminosity | 99[7] L☉ |
| Surface gravity (log g) | 3.94[7] cgs |
| Temperature | 10,623[7] K |
| Rotational velocity (v sin i) | 9.6[8] km/s |
| Age | 237[9] Myr |
| Other designations | |
| 28 Herculis, BD+05°3223, HD 149121, HIP 81007, HR 6158, SAO 121676[10] | |
| Database references | |
| SIMBAD | data |
n Herculis, also known as 28 Herculis, is a mercury-manganese star[11] in the constellation Hercules at a distance of approximately 381 light-years (about 117 parsecs) from the Sun. The apparent magnitude of the star is +5.6. Once in the constellation Ophiuchus, it was also catalogued as 11 Ophiuchi.[10]
References
[edit | edit source]- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). XHIP record for this object at VizieR.
- ^ a b c d e f Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Gaia DR3 record for this source at VizieR.
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b c d e Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
