HAT-P-12

HAT-P-12 / Komondor
Observation data; Epoch J2000 Equinox J2000
Constellation	Canes Venatici
Right ascension	13h 57m 33.4669s
Declination	+43° 29′ 36.602″
Apparent magnitude (V)	12.84
Characteristics
Spectral type	K5
Apparent magnitude (J)	10.794 ±0.023
Apparent magnitude (H)	10.236 ±0.022
Apparent magnitude (K)	10.108 ±0.016
Variable type	planetary transit
Astrometry
Radial velocity (Rv)	−40.4589±0.0023 km/s
Proper motion (μ)	RA: −134.793(8) mas/yr ; Dec.: −44.229(11) mas/yr
Parallax (π)	7.0448 ± 0.0105 mas
Distance	463.0 ± 0.7 ly ; (141.9 ± 0.2 pc)
Absolute magnitude (MV)	12.35 ± 0.23
Details
Mass	0.719±0.016 M☉
Radius	0.7084±0.0095 R☉
Luminosity	0.21+0.02; −0.01 L☉
Surface gravity (log g)	4.594±0.013 cgs
Temperature	4710±49 K
Metallicity [Fe/H]	−0.24+0.055; −0.062 dex
Rotation	0.5 ± 0.4 kms−1
Age	2.5 ± 2.0 Gyr
Other designations
	Komondor, HAT-P-12, Gaia DR3 1499514786891168640, GSC 03033-00706, 2MASS J13573347+4329367, SDSS J135733.42+432936.5
Database references
SIMBAD	data
Exoplanet Archive	data
Data sources:
Hipparcos Catalogue,; CCDM (2002),; Bright Star Catalogue (5th rev. ed.)

HAT-P-12 is a magnitude 13 low-metallicity K dwarf star approximately 463 light years away in the constellation Canes Venatici, which hosts one known exoplanet.^[3]^[2]

^ Cite error: The named reference Roman1987 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e Cite error: The named reference Gaia DR3 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e ^f Cite error: The named reference Hartman2009 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d Cite error: The named reference Simbad was invoked but never defined (see the help page).
^ Cite error: The named reference Mancini2018 was invoked but never defined (see the help page).
^ Cite error: The named reference Wang2021 was invoked but never defined (see the help page).

Observation data Epoch J2000 Equinox J2000
Constellation	Canes Venatici^[1]
Right ascension	13^h 57^m 33.4669^s^[2]
Declination	+43° 29′ 36.602″^[2]
Apparent magnitude (V)	12.84
Characteristics
Spectral type	K5^[3]
Apparent magnitude (J)	10.794 ±0.023^[4]
Apparent magnitude (H)	10.236 ±0.022^[4]
Apparent magnitude (K)	10.108 ±0.016^[4]
Variable type	planetary transit^[3]
Astrometry

Radial velocity (R_v)	−40.4589±0.0023^[5] km/s
Proper motion (μ)	RA: −134.793(8) mas/yr^[2] Dec.: −44.229(11) mas/yr^[2]
Parallax (π)	7.0448 ± 0.0105 mas^[2]
Distance	463.0 ± 0.7 ly (141.9 ± 0.2 pc)
Absolute magnitude (M_V)	12.35 ± 0.23

Details^[6]

Mass	0.719±0.016 `M`_☉
Radius	0.7084±0.0095 `R`_☉
Luminosity	0.21^+0.02 _−0.01^[3] `L`_☉
Surface gravity (log g)	4.594±0.013 cgs
Temperature	4710±49 K
Metallicity [Fe/H]	−0.24^+0.055 _−0.062 dex
Rotation	0.5 ± 0.4 kms⁻¹^[3]
Age	2.5 ± 2.0^[3] Gyr

Other designations
Komondor, HAT-P-12, Gaia DR3 1499514786891168640, GSC 03033-00706, 2MASS J13573347+4329367, SDSS J135733.42+432936.5^[4]
Database references
SIMBAD	data
Exoplanet Archive	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)