WASP-37
Star in constellation of Virgo From Wikipedia, the free encyclopedia
WASP-37 is a yellow main sequence star in the constellation of Virgo.
| 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]
| 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 |
References
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