| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Sagittarius |
| Right ascension | ~19h 16m 42.930s[1] |
| Declination | ~-45° 53′ 21.00″[1] |
| Characteristics | |
| Spectral type | M0 V / M0 V |
| U−B color index | ~1.21 / ~1.21 |
| B−V color index | ~1.45 / ~1.45 |
| Astrometry | |
| Absolute magnitude (MV) | ~9.35 / ~9.30 |
| Details | |
| Mass | ~0.59 / ~0.59 M☉ |
| Radius | ~0.78 / ~0.78 R☉ |
| Luminosity | ~0.12 / ~0.12 L☉ |
| Temperature | ~3,840 / ~3,840 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| NStED | data |
| ARICNS | data |
HD 179930 is a binary star system located about 50 light-years (16 pc) away from Earth, in the constellation Sagittarius. This system consists of a pair of nearly identical red dwarf stars, separated by 3 AU.