HD 161988
Appearance
HD 161988 | |
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Apus |
Right ascension | 17h 57m 41.685s |
Declination | -76° 10′ 40.618″ |
Apparent magnitude (V) | 6.072 |
Characteristics | |
Spectral type | K2III |
U−B color index | 1.28 |
B−V color index | 1.2 |
Astrometry | |
Radial velocity (Rv) | 37 km/s |
Proper motion (μ) | RA: 1.16 mas/yr Dec.: -1.34 mas/yr |
Parallax (π) | 5.48 ± 0.54 mas |
Distance | 600 ± 60 ly (180 ± 20 pc) |
Absolute magnitude (MV) | 7.296 |
Details | |
Mass | 0,8 M☉ |
Radius | 0,9 R☉ |
Luminosity | 0,4 L☉ |
Temperature | 3,500–5,000 K |
Metallicity | ? |
Rotation | ? |
Age | ? years |
Orbit | |
Companion | HD 161988 B |
Semi-major axis (a) | 25.5″ |
Inclination (i) | 120° |
Other designations | |
Database references | |
SIMBAD | data |
Database references | |
SIMBAD | data |
HD 161988 or IDS+17435-7609 A is star in double system.
References
Components
NAME | Right ascension | Declination | Apparent magnitude (V) | Spectral type | Database references |
---|---|---|---|---|---|
IDS+17435-7609 B (CPD-76 1226B) | 17h 57m 47.9s | -76° 10' 50 | 14.0 | Simbad |