DL Crucis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Crux |
| Right ascension | 12h 14m 16.9255s |
| Declination | −64° 24′ 30.662″ |
| Apparent magnitude (V) | 6.18 |
| Characteristics | |
| Spectral type | B1.5Ia |
| U−B color index | −0.73 |
| B−V color index | 0.12 |
| Variable type | α Cygni |
| Astrometry | |
| Radial velocity (Rv) | -10.50 km/s |
| Proper motion (μ) | RA: -5.62 mas/yr Dec.: 0.15 mas/yr |
| Parallax (π) | 0.80±0.30 mas |
| Distance | approx. 4,000 ly (approx. 1,300 pc) |
| Absolute magnitude (MV) | −6.9 |
| Details | |
| Mass | 30 M☉ |
| Radius | 42 R☉ |
| Luminosity | 251,000 L☉ |
| Surface gravity (log g) | 2.50 cgs |
| Temperature | 20,100 K |
| Rotational velocity (v sin i) | 43 km/s |
| Other designations | |
| DL Cru, HIP 59678, HD 106343, CD-63° 732, HR 4653, GSC 08982-04743, CPD-63° 2203, GC 16707, SAO 251803 | |
| Database references | |
| SIMBAD | data |
DL Crucis is a variable star in the constellation Crux.