 Location of Romano's Star (below centre, circled) | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Triangulum |
| Right ascension | 01h 35m 09.712s[1] |
| Declination | +30° 41′ 56.55″[1] |
| Apparent magnitude (V) | 16.5–18.8[2] |
| Characteristics | |
| Evolutionary stage | WR[2] |
| Spectral type | WN8h–WN11h[2] |
| B−V color index | −0.1[2] |
| Variable type | LBV[2] |
| Astrometry | |
| Distance | 847,000[2] pc |
| Absolute magnitude (MV) | −7.4 (variable)[3] |
| Details | |
| Minimum | |
| Radius | 23–27[4] R☉ |
| Luminosity | 310,000–370,000[4] L☉ |
| Temperature | 27,000–33,000[4] K |
| Maximum | |
| Radius | 61[2] R☉ |
| Luminosity | 1.05 million[2] L☉ |
| Temperature | 23,500[2] K |
| Age | 4[2] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Romano's Star /roʊˈmɑːnoʊz/ (GR 290) is a luminous blue variable star located in the Messier 33 galaxy in the constellation of Triangulum.
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