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 |
| Astrometry | |
| Distance | 95 ly (29.14 pc) |
| Absolute magnitude (MV) | +1.43 |
| Details | |
| Mass | 2.9 M☉ |
| Radius | 1.8 R☉ |
| Luminosity | 29 L☉ |
| Temperature | 9506 K |
| Rotational velocity (v sin i) | 220 km/s |
| Age |
184+93 −134 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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.
It is known also as Muliphen, although at least two more stars are known with this name: Gamma Canis Majoris (often spelled as Muliphein) and Gamma Centauri (often spelled as Muhlifain).
This is an A-type main sequence star with a stellar classification of A0 V. It has nearly three times the mass of the Sun and 1.8 times the Sun's radius. The star shines with 29 times the luminosity of the Sun, which is being emitted from its outer atmosphere at an effective temperature of 9506 K. 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.
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