DR1 (star)
Location of DR1 (circled in yellow), as captured by the VLT's OmegaCAM. | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 01h 05m 01.61780s |
| Declination | +02° 04′ 19.9382″ |
| Apparent magnitude (V) | 19.857 |
| Characteristics | |
| Evolutionary stage | Wolf-Rayet |
| Spectral type | WO3 |
| Astrometry | |
| Radial velocity (Rv) | −226±18 km/s |
| Proper motion (μ) | RA: +0.430 mas/yr Dec.: +0.328 mas/yr |
| Distance | 721,000 pc |
| Absolute magnitude (MV) | −4.43 |
| Details | |
| Mass | 20 M☉ |
| Radius | 1.06 R☉ |
| Luminosity | 479,000 L☉ |
| Temperature | 150,000 K |
| Metallicity | 15% solar |
| Rotational velocity (v sin i) | ≤500 km/s |
| Other designations | |
| DR 1 in IC 1613, IC 1613 WR, [BUG2007] B 17, CAIRNS J010501.61+020420.6, [AM85] IC 1613 6, Gaia DR3 2539058702595056640 | |
| Database references | |
| SIMBAD | data |
DR1 is a solitary Wolf-Rayet (WR) star in the irregular dwarf galaxy IC 1613, located approximately 721 kiloparsecs (2,350,000 light-years) distant in the constellation of Cetus. An extremely rare star on the WO oxygen sequence, it may be the only Wolf-Rayet star in IC 1613.