20h49m49.7853s, −24° 25′ 43.5398″| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Capricornus[1] |
| Right ascension | 20h49m 49.78530s[2] |
| Declination | −24° 25′ 43.5378″[2] |
| Apparent magnitude (V) | 12.43[3] |
| Characteristics | |
| Evolutionary stage | main-sequence star |
| Spectral type | F[4] |
| Astrometry | |
| Radial velocity (Rv) | −22.07±0.83[2] km/s |
| Proper motion (μ) | RA: 10.393 mas/yr[2] Dec.: 15.478 mas/yr[2] |
| Parallax (π) | 2.3595 ± 0.0171 mas[2] |
| Distance | 1,380 ± 10 ly (424 ± 3 pc) |
| Details[5] | |
| Mass | 1.210±0.040 M☉ |
| Radius | 1.400±0.030 R☉ |
| Surface gravity (log g) | 4.22±0.01[4] cgs |
| Temperature | 6351±76 K |
| Metallicity [Fe/H] | −0.157±0.070 dex |
| Rotational velocity (v sin i) | 9.1±1.3 km/s |
| Age | 3.20+0.60 −0.40 Gyr |
| Other designations | |
HATS-3, TOI-103, TIC 336732616, TYC 6926-454-1, GSC 06926-00454, 2MASS J20494978-2425436[3] | |
| Database references | |
| SIMBAD | data |
HATS-3 is an F-type main-sequence star 1,380 light-years (420 parsecs) away. Its surface temperature is 6351±76K. HATS-3 is relatively depleted in its concentration of heavy elements, with a metallicity Fe/H index of −0.157±0.07, but is slightly younger than the Sun at an age of 3.2+0.6
−0.4 billion years.[4]
A multiplicity survey in 2016 detected a candidate stellar companion to HATS-3, 3.671±0.016 arc-seconds away.[6]
In 2013, one planet, named HATS-3b, was discovered on a tight, nearly circular orbit.[4] The planetary orbit of HATS-3b is likely aligned with the equatorial plane of the star, at a misalignment angle of 3±25°.[7] The planetary equilibrium temperature is 1643 K.[4]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 1.10+0.18 −0.19 MJ |
0.04852+0.00053 −0.00054 |
3.5478510(50) | <0.30 | 86.20±0.30° | 1.381±0.035 RJ |
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