HAT-P-25
G-type main-sequence star
From Wikipedia, the free encyclopedia
HAT-P-25 is a G-type main-sequence star about 985 light-years away. It has a very low flare activity.[5] The star is enriched in heavy elements, having about twice amount of metals compared to solar abundance.
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Aries[1] |
| Right ascension | 03h 13m 44.4981s[2] |
| Declination | +25° 11′ 50.689″[2] |
| Apparent magnitude (V) | 13.15[3] |
| Characteristics | |
| Evolutionary stage | main sequence[4] |
| Spectral type | G5[4] |
| Astrometry | |
| Proper motion (μ) | RA: 13.490(21) mas/yr[2] Dec.: −13.684(16) mas/yr[2] |
| Parallax (π) | 3.3128±0.0178 mas[2] |
| Distance | 985 ± 5 ly (302 ± 2 pc) |
| Details[4] | |
| Mass | 1.012+0.051 −0.051 M☉ |
| Radius | 0.919±0.034 R☉ |
| Luminosity | 0.72[2] L☉ |
| Surface gravity (log g) | 4.516+0.026 −0.025 cgs |
| Temperature | 5,519+78 −76 K |
| Metallicity | 0.29±0.08 |
| Age | 3.2±2.3 Gyr |
| Other designations | |
| TYC 320-1027-1, GSC 0320-01027, 2MASS J14123753+0403359, Gaia DR2 3668036348641580288[3] | |
| Database references | |
| SIMBAD | data |
Planetary system
In 2010, a transiting hot Jupiter-like planet was detected.[6] It has an equilibrium temperature of 1,182±25 K.[4] The stability of orbits within circumstellar habitable zone is not significantly affected by the HAT-P-25b planet.[7]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination (°) |
Radius |
|---|---|---|---|---|---|---|
| b | 0.569+0.023 −0.022 MJ |
0.0466±0.0005 | 3.65281514+0.00000076 −0.00000075 |
0.023+0.022 −0.014 |
87.6±0.5 | 1.135±0.048 RJ |
