Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Caelum |
Right ascension | 04h 43m 44.27211s[1] |
Declination | −41° 03′ 53.2340″[1] |
Apparent magnitude (V) | 6.24[2] |
Characteristics | |
Spectral type | K3/4III[3] |
U−B color index | +1.78[4] |
B−V color index | +1.468±0.008[2] |
Astrometry | |
Radial velocity (Rv) | −4.3±0.4[5] km/s |
Proper motion (μ) | RA: +10.82[6] mas/yr Dec.: +10.93[6] mas/yr |
Parallax (π) | 4.6342 ± 0.0664 mas[1] |
Distance | 700 ± 10 ly (216 ± 3 pc) |
Absolute magnitude (MV) | −0.52[2] |
Details | |
Radius | 31.43+2.36 −3.87[1] R☉ |
Luminosity | 274±5[1] L☉ |
Temperature | 4,189+284 −149[1] K |
Other designations | |
Database references | |
SIMBAD | data |
Lambda Caeli, Latinized from λ Caeli, is a star in the constellation Caelum. It is also known by its designations HD 30202 and HR 1518.[8] This star is a challenge to view with the naked eye, having an apparent visual magnitude of 6.24.[2] Based on parallax measurements, Lambda Caeli is known to be around 700 light-years distant from the Sun, but is drifting closer with a radial velocity of −4 km/s.[5]
This object is an aging K-type giant star with a stellar classification of K3/4III.[3] Having exhausted the supply of hydrogen at its core, it has cooled and expanded; now having 31 times the radius of the Sun. It is radiating 274 times the Sun's luminosity from its swollen photosphere at an effective temperature of 4,189 K.[1]