Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Crux |
Right ascension | 12h 27m 28.88s |
Declination | −58° 59′ 30.4″ |
Apparent magnitude (V) | 5.38 |
Characteristics | |
Spectral type | M4-5III |
Variable type | semiregular variable |
Astrometry | |
Radial velocity (Rv) | 71.7 ± 0.9 km/s |
Proper motion (μ) |
RA: -20.027 ± 0.301
[2]
mas/
yr Dec.: 3.586 ± 0.268 [2] mas/ yr |
Parallax (π) | 6.8429 ± 0.1942 mas [2] |
Distance | 480 ± 10
ly (146 ± 4 pc) |
Other designations | |
Database references | |
SIMBAD | data |
BL Crucis is a red giant and a semiregular variable in the constellation of Crux. [3] It has periods with three frequencies of 30.7, 42.3 and 43.6 days. [1] It is 480 ± 10 light-years distant from Earth. [2]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Crux |
Right ascension | 12h 27m 28.88s |
Declination | −58° 59′ 30.4″ |
Apparent magnitude (V) | 5.38 |
Characteristics | |
Spectral type | M4-5III |
Variable type | semiregular variable |
Astrometry | |
Radial velocity (Rv) | 71.7 ± 0.9 km/s |
Proper motion (μ) |
RA: -20.027 ± 0.301
[2]
mas/
yr Dec.: 3.586 ± 0.268 [2] mas/ yr |
Parallax (π) | 6.8429 ± 0.1942 mas [2] |
Distance | 480 ± 10
ly (146 ± 4 pc) |
Other designations | |
Database references | |
SIMBAD | data |
BL Crucis is a red giant and a semiregular variable in the constellation of Crux. [3] It has periods with three frequencies of 30.7, 42.3 and 43.6 days. [1] It is 480 ± 10 light-years distant from Earth. [2]