Q Centauri
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| A | |
| Right ascension | 13h 41m 44.770s |
| Declination | −54° 33′ 33.93″ |
| Apparent magnitude (V) | +5.22 |
| B | |
| Right ascension | 13h 41m 44.956s |
| Declination | −54° 33′ 39.21″ |
| Apparent magnitude (V) | +6.52 |
| Characteristics | |
| Spectral type | B8Vn + A0V |
| U−B color index | −0.23 |
| B−V color index | −0.05 |
| Astrometry | |
| A | |
| Radial velocity (Rv) | +14.49±0.74 km/s |
| Proper motion (μ) | RA: −43.783 mas/yr Dec.: −24.935 mas/yr |
| Parallax (π) | 11.2810±0.0956 mas |
| Distance | 289 ± 2 ly (88.6 ± 0.8 pc) |
| B | |
| Proper motion (μ) | RA: −43.783 mas/yr Dec.: −24.935 mas/yr |
| Parallax (π) | 11.3203±0.0329 mas |
| Distance | 288.1 ± 0.8 ly (88.3 ± 0.3 pc) |
| Details | |
| A | |
| Mass | 2.8 M☉ |
| Radius | 2.4 R☉ |
| Luminosity | 70 L☉ |
| Surface gravity (log g) | 4.12 cgs |
| Temperature | 10,740 K |
| B | |
| Mass | 2.3 M☉ |
| Radius | 1.6 R☉ |
| Luminosity | 16 L☉ |
| Surface gravity (log g) | 4.37 cgs |
| Temperature | 9,016 K |
| Other designations | |
| HR 5141, HD 118991, CP−53°5725, HIP 66821, SAO 241076, GC 18495, CCDM J13417-5434 | |
| Database references | |
| SIMBAD | data |
| A | |
| B | |
Q Centauri (Q Cen) is a binary star in the constellation Centaurus. It has a combined apparent magnitude of +4.99 and is approximately 288 light years from Earth.
The primary component, Q Centauri A, is a blue-white B-type main sequence dwarf with an apparent magnitude of +5.2. Its companion, Q Centauri B, is a white A-type main sequence dwarf with an apparent magnitude of +6.5. The two stars are separated by 5.6 arcseconds on the sky.