Iota Ophiuchi
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ophiuchus
|
| Right ascension | 16h 54m 00.47151s[1] |
| Declination | 10° 09′ 55.2982″[1] |
| Apparent magnitude (V) | 4.39[2] |
| Characteristics | |
| Evolutionary stage | main sequence[3] |
| Spectral type | B8V[4] |
| U−B color index | −0.32[5] |
| B−V color index | −0.08[5] |
| Absolute magnitude (MV) | 0.01[2] |
| Details | |
Myr | |
| Database references | |
| SIMBAD | data |
ι Ophiuchi,
apparent visual magnitude of 4.39.[2] The star is approximately 245 light years from the Sun based on parallax,[1] but is drifting closer with a radial velocity of −19 km/s.[6]
This object is a
luminosity of the Sun from its photosphere at an effective temperature of 11,220 K.[3] It displays an infrared excess, suggesting the presence of circumstellar material.[13]
References
- ^ S2CID 18759600. Vizier catalog entry
- ^ S2CID 119257644. Vizier catalog entry
- ^ S2CID 55586789. Vizier catalog entry
- ^ doi:10.1086/111348.
- ^
- ^ S2CID 119231169.
- ^ Bibcode:1999A&A...352..555A. Vizier catalog entry
- ^ S2CID 53480665.
- ^ S2CID 119108982.
- ^ "iot Oph". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-09-05.
- S2CID 14878976.
- ISBN 9780750306546.
- S2CID 118665352.
