67 Aquarii
| Observation data EpochJ2000.0EquinoxJ2000.0(ICRS) | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 22h43m14.26269s[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−Vcolor 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 ± 0.0694mas[1] |
| Distance | 408 ± 4ly (125 ± 1pc) |
| 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(logg) | 3.998±0.014[7]cgs |
| Temperature | 10,257±48[3]K |
| Rotational velocity(vsini) | 205[3]km/s |
| Age | 316[8]Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
67 Aquariiis astarlocated 484[1]light yearsaway from the Sun in thezodiacconstellationofAquarius.67 Aquariiis itsFlamsteed designation.[9]It is a dim, blue-white hued star near the lower limit of visibility to the naked eye with anapparent visual magnitudeof 6.40.[2]At the distance of this star, its visual magnitude is diminished by anextinctionof 0.11 due tointerstellar dust.[8]The position of this star near theeclipticmeans it is subject tolunar eclipses.[10]
This is alateB-type main-sequence starwith astellar classificationof B7.5 V,[4]which indicates it is generating energy throughhydrogen fusionat itscore.It is 316[8]million years old and is spinning rapidly with aprojected rotational velocityof 205 km/s;[3]thecritical velocityfor this star is 377 km/s.[7]67 Aquarii has 2.46[3]times themass of the Sunsand about double theSun's radius.[6]It is radiating 42[3]times theluminosity of the Sunfrom itsphotosphereat aneffective temperatureof 10,257 K.[3]
References
[edit]- ^abcdefBrown, A. G. A.;et al. (Gaia collaboration) (August 2018)."GaiaData Release 2: Summary of the contents and survey properties ".Astronomy & Astrophysics.616.A1.arXiv:1804.09365.Bibcode:2018A&A...616A...1G.doi:10.1051/0004-6361/201833051.Gaia DR2 record for this sourceatVizieR.
- ^abcdeAnderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation",Astronomy Letters,38(5): 331,arXiv:1108.4971,Bibcode:2012AstL...38..331A,doi:10.1134/S1063773712050015,S2CID119257644.
- ^abcdefghiZorec, J.; et al. (2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities",Astronomy and Astrophysics,537:A120,arXiv:1201.2052,Bibcode:2012A&A...537A.120Z,doi:10.1051/0004-6361/201117691,S2CID55586789.
- ^abHube, Douglas P. (1970), "The radial velocities of 335 late B-type stars",Memoirs of the Royal Astronomical Society,72:233–280,Bibcode:1970MmRAS..72..233H.
- ^Houk, N.; Swift, C. (1999), "Michigan catalogue of two-dimensional spectral types for the HD Stars",Michigan Spectral Survey,5,Bibcode:1999MSS...C05....0H.
- ^abPasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)",Astronomy and Astrophysics,367(2) (Third ed.): 521–524,arXiv:astro-ph/0012289,Bibcode:2001A&A...367..521P,doi:10.1051/0004-6361:20000451,S2CID425754.
- ^abHuang, Wenjin; et al. (October 2010), "A Stellar Rotation Census of B Stars: From ZAMS to TAMS",The Astrophysical Journal,722(1): 605–619,arXiv:1008.1761,Bibcode:2010ApJ...722..605H,doi:10.1088/0004-637X/722/1/605,S2CID118532653.
- ^abcGontcharov, G. A. (November 2012), "Spatial distribution and kinematics of OB stars",Astronomy Letters,38(11): 694–706,arXiv:1606.09028,Bibcode:2012AstL...38..694G,doi:10.1134/S1063773712110035,S2CID119108982.
- ^ab"67 Aqr".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved2019-05-18.
- ^Edwards, D. A.; et al. (April 1980), "Photoelectric observations of lunar occultations. XI.",Astronomical Journal,85:478–489,Bibcode:1980AJ.....85..478E,doi:10.1086/112700.For example, see SAO 146273 on p. 482
