Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Crux |
Right ascension | 12h 14m 16.9255s[1] |
Declination | −64° 24′ 30.662″[1] |
Apparent magnitude (V) | 6.18[2] |
Characteristics | |
Spectral type | B1.5Ia[3] |
U−B color index | −0.73[2] |
B−V color index | 0.12[2] |
Variable type | α Cygni[4] |
Astrometry | |
Radial velocity (Rv) | -10.50[5] km/s |
Proper motion (μ) | RA: -5.62[1] mas/yr Dec.: 0.15[1] mas/yr |
Parallax (π) | 0.80 ± 0.30 mas[6] |
Distance | approx. 4,000 ly (approx. 1,300 pc) |
Absolute magnitude (MV) | −6.9[7] |
Details | |
Mass | 30[3] M☉ |
Radius | 42[7] R☉ |
Luminosity | 251,000[7] L☉ |
Surface gravity (log g) | 2.50[3] cgs |
Temperature | 20,100[3] K |
Rotational velocity (v sin i) | 43[3] km/s |
Other designations | |
Database references | |
SIMBAD | data |
DL Crucis is a variable star in the constellation Crux.
hipparcos
was invoked but never defined (see the help page).schild1983
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was invoked but never defined (see the help page).gcvs
was invoked but never defined (see the help page).Gontcharov2006
was invoked but never defined (see the help page).lefever2007
was invoked but never defined (see the help page).