12 Scorpii

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12 Scorpii
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Scorpius
Right ascension 16h 12m 16.039s[1]
Declination −28° 25′ 02.31″[1]
Apparent magnitude (V) +5.67[2]
Characteristics
Spectral type B9V[3]
U−B color index −0.19[4]
B−V color index +0.01[4]
Astrometry
Radial velocity (Rv) −0.20 ± 1.8[5] km/s
Proper motion (μ) RA: −23.68 ± 0.76[1] mas/yr
Dec.: −42.44 ± 0.69[1] mas/yr
Parallax (π) 10.75 ± 0.80[1] mas
Distance 300 ± 20 ly
(93 ± 7 pc)
Absolute magnitude (MV) +0.865
Details[citation needed]
Mass 3.3 M
Radius 2.7 R
Luminosity 80 L
Temperature 11,000 K
Other designations
c1 Sco, HD 145483, HIP 79399, HR 6029, SAO 184217, CD−28° 11962
Database references
SIMBAD data

12 Scorpii is a star in the constellation of Scorpius. It is a B-type main-sequence star.[3]

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ "* 12 Sco". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 3 April 2017. 
  3. ^ a b Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H. 
  4. ^ a b Nicolet, B. (1964). "Catalogue of homogeneous data in the UBV photoelectric photometric system". Astronomy and Astrophysics, Supplement Series. 34: 1–49. Bibcode:1978A&AS...34....1N. 
  5. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053Freely accessible. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. Retrieved 12 December 2016.