46 Boötis

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46 Boötis
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 15h 08m 23.77980s[1]
Declination +26° 18′ 04.1623″[1]
Apparent magnitude (V) 5.677[2]
Characteristics
Spectral type K2III[2]
U−B color index +1.24[3]
B−V color index +1.24[3]
Astrometry
Radial velocity (Rv) 19.31[2] km/s
Proper motion (μ) RA: -0.87[1] mas/yr
Dec.: -10.90[1] mas/yr
Parallax (π) 6.30 ± 0.64[1] mas
Distance approx. 520 ly
(approx. 160 pc)
Orbit[4]
Primary 46 Boötis B
Companion 46 Boötis B
Period (P) 2567.1 days
Semi-major axis (a) 11.2 mas
Eccentricity (e) 0.83
Inclination (i) 62°
Longitude of the node (Ω) 82.6°
Periastron epoch (T) 2448356.6
Argument of periastron (ω)
(secondary)
175.3°
Other designations
b Boötis, HR 5638, BD+26°2656, HIP 74087, HD 134320, SAO 83682, GC 20367
Database references
SIMBAD data

46 Boötis or b Boötis is a star in the constellation Boötes.

46 Boötis is an orange K-type giant with an apparent magnitude of +5.67. It is approximately 420 light years from Earth.

References[edit]

  1. ^ a b c d e van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752Freely accessible. doi:10.1051/0004-6361:20078357. 
  2. ^ a b c "46 Boo". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 7 January 2017. 
  3. ^ a b Guetter, H. H.; Hewitt, A. V. (1984). "Photoelectric UBV photometry for 317 PZT and VZT stars". Astronomical Society of the Pacific. 96: 441–443. Bibcode:1984PASP...96..441G. doi:10.1086/131362. 
  4. ^ Jancart, S. (2005). "Astrometric orbits of SB9 stars". Astronomy and Astrophysics. 442 (1): 365–380. Bibcode:2005A&A...442..365J. arXiv:astro-ph/0507695Freely accessible. doi:10.1051/0004-6361:20053003. 

External links[edit]