| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Ara |
| Right ascension | 17h 26m 52.0s |
| Declination | -45° 50′34.9″ |
| Apparent magnitude (V) | 5.27m |
| Characteristics | |
| Spectral type | B9 |
| U−B color index | -0.34 |
| B−V color index | -0.07 |
| R−I color index | -0.03 |
| Astrometry | |
| Radial velocity (Rv) | 8 km/s |
| Proper motion (μ) | RA: -6.43 mas/yr Dec.: -27.58 mas/yr |
| Parallax (π) | 5.44 ± 0.97 mas |
| Distance | approx. 600 ly (approx. 180 pc) |
| Absolute magnitude (MV) | 5.2 |
| Details | |
| Mass | 18 M☉ |
| Radius | 7 R☉ |
| Luminosity | 204 L☉ |
| Temperature | 10,000–30,000 K |
| Other designations | |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
|
| Database references | |
| SIMBAD | data |
h 4949[1] or HJ[2] 4949 is a double star system in the constellation of Ara.
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