WASP-37

WASP-37 is a yellow main sequence star in the constellation of Virgo.

WASP-37

Observation data Epoch J2000      Equinox
Constellation	Virgo[1]
Right ascension	14h 47m 46.5620s[2]
Declination	01° 03′ 53.800″[2]
Apparent magnitude (V)	12.704
Characteristics
Evolutionary stage	main sequence[3]
Spectral type	G2V[3]
Astrometry
Radial velocity (Rv)	7.927±0.0042[4] km/s
Proper motion (μ)	RA: −28.214±0.016[2] mas/yr Dec.: +18.201±0.042[2] mas/yr
Parallax (π)	2.56257±0.0173 mas[2]
Distance	1,273 ± 9 ly (390 ± 3 pc)
Details[5]
Mass	0.926+0.039 −0.034 M☉
Radius	1.071+0.019 −0.018 R☉
Surface gravity (log g)	4.346+0.023 −0.021 cgs
Temperature	5,795+69 −64 K
Metallicity [Fe/H]	−0.098+0.05 −0.06 dex
Rotational velocity (v sin i)	2.4±1.6[6] km/s
Age	10.31+4.01 −2.55[7] Gyr
Other designations
WASP-37, DENIS J144746.5+010354, 2MASS J14474655+0103538, Gaia DR2 3652176997218325888[8]
Database references
SIMBAD	data

Star characteristics

WASP-37 has a low metallicity of just 40% of solar,^[3] and is likely older than Sun.^[6] WASP-37 does not have noticeable flare activity.^[9]

Planetary system

The "Hot Jupiter" class planet WASP-37b was discovered around WASP-37 in 2010.^[3] The study in 2018 has found the stability of orbits in habitable zone of WASP-37 is not significantly affected by WASP-37b planet.^[10]

The WASP-37 planetary system^[3][10][11]

Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	1.79±0.17 MJ	0.045±0.002	3.5774807±0.0000019	0	88.78°	1.16+0.07 −0.06 RJ