Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Lyra [1] |
Right ascension | 18h 17m 37.3127s [2] |
Declination | +36° 37′ 17.170″ [2] |
Apparent magnitude (V) | +11.95 |
Characteristics | |
Spectral type | G1V |
Variable type | planetary transit [3] |
Astrometry | |
Radial velocity (Rv) | 8.56±1.11 [2] km/s |
Proper motion (μ) | RA: 11.925(11) mas/yr [2] Dec.: 5.904(14) mas/yr [2] |
Parallax (π) | 3.2184±0.0105 mas [2] |
Distance | 1,013 ± 3 ly (311 ± 1 pc) |
Details | |
Mass | 1.157+0.043 −0.081 [4] M☉ |
Radius | 1.165+0.046 −0.052 [4] R☉ |
Surface gravity (log g) | 4.37 ± 0.03 [5] cgs |
Temperature | 5863 ± 80 [5] K |
Metallicity [Fe/H] | 0.10 ± 0.10 [5] dex |
Rotational velocity (v sin i) | 2.8 ± 1.0 [5] km/s |
Age | 2.6+2.1 −1.4 [4] Gyr |
Other designations | |
Chasoň, TOI-2135, TIC 76419763, TYC 2634-1087-1, GSC 02634-01087, 2MASS J18173731+3637170, HAT-P-5 [6] | |
Database references | |
SIMBAD | data |
Exoplanet Archive | 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. [7] [8]
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 the Sun. [9] [10]
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°. [3]
Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b / Kráľomoc | 1.02±0.10 MJ | 0.04073+0.00050 −0.00093 | 2.78847360(52) | <0.072 | 86.75±0.44 ° | 1.204±0.017 [11] RJ |