HD 155035 is the Henry Draper Catalogue designation for a star in the constellation Ara, the Altar. It is located at a distance of approximately 1,450 light-years (450 parsecs)[2] from Earth and has an apparent visual magnitude of 5.92,[3] making it is faintly visible to the naked eye. This is a red giant star with a stellar classification of M1.5 III.[4] It an irregular variable that changes brightness over an amplitude range of 0.12 magnitudes.[10]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Ara |
Right ascension | 17h 11m 38.68606s[2] |
Declination | –48° 52′ 24.2049″[2] |
Apparent magnitude (V) | 5.92[3] |
Characteristics | |
Spectral type | M1.5 III[4] |
B−V color index | +1.82[3] |
Variable type | LB[5] |
Astrometry | |
Proper motion (μ) | RA: 7.600[2] mas/yr Dec.: –6.378[2] mas/yr |
Parallax (π) | 2.2444 ± 0.0772 mas[2] |
Distance | 1,450 ± 50 ly (450 ± 20 pc) |
Details | |
Mass | 4.07[6] M☉ |
Radius | 172[7] R☉ |
Luminosity | 3,454[8] L☉ |
Temperature | 3,675[7] K |
Other designations | |
Database references | |
SIMBAD | data |