67 Aquarii
Star in the constellation Aquarius
From Wikipedia, the free encyclopedia
67 Aquarii is a star located 484[1] light years away from the Sun in the zodiac constellation of Aquarius. 67 Aquarii is its Flamsteed designation.[9] It is a dim, blue-white hued star near the lower limit of visibility to the naked eye with an apparent visual magnitude of 6.40.[2] At the distance of this star, its visual magnitude is diminished by an extinction of 0.11 due to interstellar dust.[8] The position of this star near the ecliptic means it is subject to lunar eclipses.[10]
| Observation data Epoch J2000.0 Equinox ICRS | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 22h 43m 14.26269s[1] |
| Declination | −06° 57′ 46.5752″[1] |
| Apparent magnitude (V) | 6.40[2] |
| Characteristics | |
| Evolutionary stage | main sequence[3] |
| Spectral type | B7.5 V[4] or B9 V[5] |
| B−V color index | −0.039±0.008[2] |
| Astrometry | |
| Radial velocity (Rv) | 2.0±3.8[2] km/s |
| Proper motion (μ) | RA: +26.147[1] mas/yr Dec.: −10.192[1] mas/yr |
| Parallax (π) | 8.0002±0.0694 mas[1] |
| Distance | 408 ± 4 ly (125 ± 1 pc) |
| Absolute magnitude (MV) | 1.12[2] |
| Details | |
| Mass | 2.46±0.05[3] M☉ |
| Radius | 2.0[6] R☉ |
| Luminosity | 41.9+5.5 −4.9[3] L☉ |
| Surface gravity (log g) | 3.998±0.014[7] cgs |
| Temperature | 10,257±48[3] K |
| Rotational velocity (v sin i) | 205[3] km/s |
| Age | 316[8] Myr |
| Other designations | |
| 67 Aqr, BD−07°5838, FK5 3819, GC 31703, HD 215143, HIP 112179, HR 8647, SAO 146273[9] | |
| Database references | |
| SIMBAD | data |
This is a late B-type main-sequence star with a stellar classification of B7.5 V,[4] which indicates it is generating energy through hydrogen fusion at its core. It is 316[8] million years old and is spinning rapidly with a projected rotational velocity of 205 km/s;[3] the critical velocity for this star is 377 km/s.[7] 67 Aquarii has 2.46[3] times the mass of the Suns and about double the Sun's radius.[6] It is radiating 42[3] times the luminosity of the Sun from its photosphere at an effective temperature of 10,257 K.[3]