Single star in the constellation Boötes
45 Boötis
Observation dataEpoch J2000 Equinox J2000
Constellation
Boötes
Right ascension 15h 07m 18.06587s [ 1]
Declination
+24° 52′ 09.0952″[ 1]
Apparent magnitude (V)4.93[ 2]
Characteristics
Spectral type
F5 V[ 3]
B−V color index
+0.43[ 3]
Astrometry Radial velocity (Rv )−11.2[ 2] Proper motion (μ) RA: +184.767[ 1] mas /yr Dec.: −164.012[ 1] mas /yr Parallax (π)51.6674 ± 0.1882 mas [ 1] Distance 63.1 ± 0.2 ly pc ) Absolute magnitude (MV )3.96[ 4] Details[ 2] Mass ± 0.16M ☉ Radius ± 0.027R ☉ Luminosity +0.25 L ☉ Surface gravity (log g )4.19 cgs Temperature 6,435 K Metallicity −0.02 dex Rotational velocity (v sin i )39.8 km/s Age +0.8 Gyr Other designations c Boo ,
45 Boo ,
NSV 6945 ,
BD +25°2873,
FK5 1396,
GJ 578,
HD 134083,
HIP 73996,
HR 5634,
SAO 83671,
WDS J15073+2452[ 5] Database references SIMBAD data
45 Boötis is a single[ 6] [ 7] star located 63 light years away from the Sun in the northern constellation of Boötes . It has the Bayer designation c Boötis ; 45 Boötis is the Flamsteed designation . This body is visible to the naked eye as a faint, yellow-white hued star with an apparent visual magnitude of 4.93.[ 2] proper motion , traversing the celestial sphere at the rate of ″ [ 8] radial velocity of −11 km/s,[ 2] Ursa Major Moving Group .[ 9]
This is an F-type main-sequence star with a stellar classification of F5 V.[ 3] projected rotational velocity of 40 km/s. The star has 1.2 times the mass of the Sun and 1.46 times the Sun's radius . It is radiating 3.3 times the luminosity of the Sun from its photosphere at an effective temperature of 6,435 K.[ 2] X-ray emission .[ 10]
There is a magnitude 11.53 visual companion at an angular separation of ″ [ 11]
References
^ a b c d e Brown, A. G. A. ; et al. (Gaia collaboration) (August 2018). "Gaia Data 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 source at VizieR .^ a b c d e f Valenti, J. A.; Fischer, D. A. (2005), "Spectroscopic Properties of Cool Stars (SPOCS). I. 1040 F, G, and K Dwarfs from Keck, Lick, and AAT Planet Search Programs", The Astrophysical Journal Supplement Series , 159 (1): 141– 166, Bibcode :2005ApJS..159..141V , doi :10.1086/430500 ^ a b c Malagnini, M. L.; Morossi, C. (November 1990), "Accurate absolute luminosities, effective temperatures, radii, masses and surface gravities for a selected sample of field stars", Astronomy and Astrophysics Supplement Series , 85 (3): 1015– 1019, Bibcode :1990A&AS...85.1015M ^ Eggen, Olin J. (August 1998), "The Sirius Supercluster and Missing Mass near the Sun", The Astronomical Journal , 116 (2): 782– 788, Bibcode :1998AJ....116..782E , doi :10.1086/300465 . ^ "40 Boo" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved May 12, 2019 .^ Fuhrmann, K.; et al. (2017), "Multiplicity among Solar-type Stars", The Astrophysical Journal , 836 (1): 139, Bibcode :2017ApJ...836..139F , doi :10.3847/1538-4357/836/1/139 ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society , 389 (2): 869– 879, arXiv :0806.2878 Bibcode :2008MNRAS.389..869E , doi :10.1111/j.1365-2966.2008.13596.x S2CID 14878976 . ^ Lépine, Sébastien; Shara, Michael M. (March 2005), "A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog)", The Astronomical Journal , 129 (3): 1483– 1522, arXiv :astro-ph/0412070 Bibcode :2005AJ....129.1483L , doi :10.1086/427854 , S2CID 2603568 . ^ King, Jeremy R.; et al. (2003), "Stellar Kinematic Groups. II. A Reexamination of the Membership, Activity, and Age of the Ursa Major Group" , The Astronomical Journal , 125 (4): 1980, Bibcode :2003AJ....125.1980K , doi :10.1086/368241 ^ Haakonsen, Christian Bernt; Rutledge, Robert E. (September 2009), "XID II: Statistical Cross-Association of ROSAT Bright Source Catalog X-ray Sources with 2MASS Point Source Catalog Near-Infrared Sources", The Astrophysical Journal Supplement , 184 (1): 138– 151, arXiv :0910.3229 Bibcode :2009ApJS..184..138H , doi :10.1088/0067-0049/184/1/138 , S2CID 119267456 . ^ Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal , 122 (6): 3466, Bibcode :2001AJ....122.3466M , doi :10.1086/323920
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