18 Boötis

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18 Boötis
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 14h 19m 16.2803s
Declination +13° 00′ 15.476″
Apparent magnitude (V) 5.41[1]
Spectral type F5 IV[1]
U−B color index –0.03
B−V color index 0.385[1]
R−I color index 0.19
Radial velocity (Rv)-3 km/s
Proper motion (μ) RA: +105.91 mas/yr
Dec.: –32.22 mas/yr
Parallax (π)38.33 ± 0.81 mas
Distance85 ± 2 ly
(26.1 ± 0.6 pc)
Age300[1] Myr
Other designations
BD+13 2782, FK5 1372, HD 125451, HIP 69989, HR 5365, SAO 100975.
Database references

18 Boötis is a star in the constellation Boötes about 85 light years away from Earth. Its apparent magnitude is 5.40. It is a subgiant of spectral type F5IV.

18 Boötis is believed to be a stream star member of the Ursa Major Moving Group.[citation needed]


  1. ^ a b c d Decin, G.; et al. (November 2003), "Age Dependence of the Vega Phenomenon: Observations", The Astrophysical Journal, 598 (1): 636–644, arXiv:astro-ph/0308294Freely accessible, Bibcode:2003ApJ...598..636D, doi:10.1086/378800 

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