Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Corona Borealis |
Right ascension | 15h 51m 13.9315s[1] |
Declination | +35° 39′ 26.5647″[1] |
Apparent magnitude (V) | +4.79[2] |
Characteristics | |
Spectral type | K0 III-IV[2] |
Astrometry | |
Proper motion (μ) | RA: −8.792±0.177[1] mas/yr Dec.: −347.766±0.202[1] mas/yr |
Parallax (π) | 33.2328 ± 0.1083 mas[1] |
Distance | 98.1 ± 0.3 ly (30.09 ± 0.10 pc) |
Absolute magnitude (MV) | +2.37[3] |
Details[4] | |
Mass | 1.32±0.10 M☉ |
Radius | 4.77±0.07 R☉ |
Luminosity | 11.6±0.3 L☉ |
Surface gravity (log g) | 3.15±0.14 cgs |
Temperature | 4,870±47 K |
Metallicity [Fe/H] | +0.13±0.03 dex |
Other designations | |
Database references | |
SIMBAD | data |
Kappa Coronae Borealis, Latinized from κ Coronae Borealis, is a star approximately 98 light years away in the constellation of Corona Borealis. The apparent magnitude is +4.82 (4.17 trillion times fainter than the Sun) and the absolute magnitude is +2.35 (9.82 times brighter than the Sun). It is an orange K-type subgiant star of spectral type K1IV, meaning it has almost completely exhausted its hydrogen supply in its core. It is 1.32 times as massive as the Sun yet has brightened to 11.6 times its luminosity. Around 2.5 billion years old, it was formerly an A-type main sequence star.[6]
Gaia DR2
was invoked but never defined (see the help page).Sato2012
was invoked but never defined (see the help page).Anderson2012
was invoked but never defined (see the help page).White2018
was invoked but never defined (see the help page).Simbad
was invoked but never defined (see the help page).Bonsor13
was invoked but never defined (see the help page).