12 Boötis

12 Boötis

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Boötes
Right ascension	14^h 10^m 23.9^s
Declination	+25° 05' 30"
Apparent magnitude (V)	+4.82
Distance	120 ± 3 ly (37 ± 1 pc)
Spectral type	F9IV w
Other designations
d Boötis, HR 5304, HD 123999, Wo 9470, BD+25°2737, FK5 522, HIP 69226, SAO 83203, GC 19127, CCDM 14104+2505
Database references
SIMBAD	data

12 Boötis is a spectroscopic binary^[1] in the constellation Boötes. It is approximately 120 light years from Earth.

The primary component, 12 Boötis A, is a yellow-white F-type subgiant with an apparent magnitude of +4.82. Its companion, 12 Boötis B, is separated from the primary by approximately one arcsecond. The binary pair completes one orbit around its centre of mass once every 9.6045 days.

References

1. Konacki, Maciej; et al. (2010). "High-precision Orbital and Physical Parameters of Double-lined Spectroscopic Binary Stars—HD78418, HD123999, HD160922, HD200077, and HD210027". The Astrophysical Journal 719 (2): 1293–1314. arXiv:0910.4482. Bibcode:2010ApJ...719.1293K. doi:10.1088/0004-637X/719/2/1293.

• HR 5304
• Image 12 Boötis