Gamma Ophiuchi
 Location of γ Ophiuchi (circled) |
|
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Ophiuchus |
| Right ascension | 17h 47m 53.57s |
| Declination | +02° 42′ 26.9″ |
| Apparent magnitude (V) | +3.75 |
| Characteristics | |
| Spectral type | A0 V[1] |
| Astrometry | |
| Distance | 95 ly (29.14 pc) |
| Absolute magnitude (MV) | +1.43 |
| Details | |
| Mass | 2.9[1] M☉ |
| Radius | 1.8[2] R☉ |
| Luminosity | 29[1] L☉ |
| Temperature | 9506[1] K |
| Rotational velocity (v sin i) | 220[3] km/s |
| Age | 184+93 −134[3] Myr |
| Other designations | |
Gamma Ophiuchi (γ Oph, γ Ophiuchi) is a fourth-magnitude star in the constellation Ophiuchus. It is located about 95 light-years from Earth. The system has an age of roughly 184 million years.[1]
This is an A-type main sequence star with a stellar classification of A0 V.[1] It has nearly three times the mass of the Sun and 1.8 times the Sun's radius.[2] The star shines with 29[1] times the luminosity of the Sun, which is being emitted from its outer atmosphere at an effective temperature of 9506 K.[1] It is radiating an excess emission of infrared, suggesting the presence of a circumstellar disk of dust at an orbital radius of 64 AU from the host star.[1]
References
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