Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Lyra [3] |
Right ascension | 18h 17m 37.3127s [4] |
Declination | +36° 37′ 17.170″ [4] |
Apparent magnitude (V) | +11.95 |
Characteristics | |
Spectral type | G1V |
Variable type | planetary transit [5] |
Astrometry | |
Proper motion (μ) | RA: 11.925(11) mas/yr [4] Dec.: 5.904(14) mas/yr [4] |
Parallax (π) | 3.2184±0.0105 mas [4] |
Distance | 1,013 ± 3 ly (311 ± 1 pc) |
Details | |
Mass | 1.16 ± 0.062 M☉ |
Radius | 1.167 ± 0.049 R☉ |
Surface gravity (log g) | 4.37 ± 0.03 [6] cgs |
Temperature | 5863 ± 80 [6] K |
Metallicity [Fe/H] | 0.10 ± 0.10 [6] dex |
Rotational velocity (v sin i) | 2.8 ± 1.0 [6] km/s |
Age | 2.6 ± 1.8 Gyr |
Other designations | |
Chasoň, Gaia DR3 4606030169272920320, TYC 2634-1087-1, GSC 02634-01087, 2MASS J18173731+3637170 [7] | |
Database references | |
SIMBAD | data |
HAT-P-5 is a 12th magnitude star in the constellation Lyra, approximately 1,000 light years away from Earth. It is a spectral type G star, about 1.16 solar masses and radii greater than the Sun, and only 200 kelvins hotter. It is estimated to be 2.6 billion years old. [1] [2]
The star HAT-P-5 is named Chasoň. The name was selected in the NameExoWorlds campaign by Slovakia, during the 100th anniversary of the IAU. Chasoň is an ancient Slovak term for Sun. [8] [9]
On October 9, 2007, a report was submitted to The Astrophysical Journal Letters telling of the discovery of an exoplanet transiting HAT-P-5. The planet was described as a Jupiter-like hot Jupiter, with a radius about one and one quarter times that of Jupiter, and nearly the same mass. Its density was reported as 0.66 ± 0.11 g/cm3, and its inclination 86.75 ± 0.44°. [5]
Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b / Kráľomoc | 1.06 ± 0.11 MJ | 0.04075 ± 0.00076 | 2.788491 ± 2.5e-05 | 0 | 86.75±0.44 [5] ° | 1.204±0.017 [10] RJ |