Q Centauri
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Apparentmagnitude(V)+5.22[3]
Apparentmagnitude(V)+6.52[3]
SpectraltypeB8Vn + A0V[5]
U−B color index−0.23[citation needed]
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus[1] |
| A | |
| Right ascension | 13h 41m 44.770s[2] |
| Declination | −54° 33′ 33.93″[2] |
| Apparent magnitude (V) | +5.22[3] |
| B | |
| Right ascension | 13h 41m 44.956s[4] |
| Declination | −54° 33′ 39.21″[4] |
| Apparent magnitude (V) | +6.52[3] |
| Characteristics | |
| Spectral type | B8Vn + A0V[5] |
| U−B color index | −0.23[citation needed] |
| B−V color index | −0.05[citation needed] |
| Astrometry | |
| A | |
| Radial velocity (Rv) | +14.49±0.74[2] km/s |
| Proper motion (μ) | RA: −43.783[2] mas/yr Dec.: −24.935[2] mas/yr |
| Parallax (π) | 11.2810±0.0956 mas[2] |
| Distance | 289 ± 2 ly (88.6 ± 0.8 pc) |
| B | |
| Proper motion (μ) | RA: −43.783[4] mas/yr Dec.: −24.935[4] mas/yr |
| Parallax (π) | 11.3203±0.0329 mas[4] |
| Distance | 288.1 ± 0.8 ly (88.3 ± 0.3 pc) |
| Details | |
| A | |
| Mass | 2.8[6] M☉ |
| Radius | 2.4[6] R☉ |
| Luminosity | 70[6] L☉ |
| Surface gravity (log g) | 4.12[6] cgs |
| Temperature | 10,740[6] K |
| B | |
| Mass | 2.3[6] M☉ |
| Radius | 1.6[6] R☉ |
| Luminosity | 16[6] L☉ |
| Surface gravity (log g) | 4.37[6] cgs |
| Temperature | 9,016[6] 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[1] and is approximately 288 light years from Earth.[2][4]
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.[7]
