Astronomy:HATS-3
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Short description: Star in the constellation Cetus
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Capricornus[1] |
| Right ascension | 20h 49m 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[2] mas/yr Dec.: 15.478[2] mas/yr |
| Parallax (π) | 2.3595 ± 0.0171[2] mas |
| 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 | |
| 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±76 K. 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]
Planetary system
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 |
References
- ↑ "Finding the constellation which contains given sky coordinates". 2 August 2008. http://djm.cc/constellation.html.
- ↑ 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 3.0 3.1 "HATS-3". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HATS-3.
- ↑ 4.0 4.1 4.2 4.3 4.4 Bayliss, D.; Zhou, G.; Penev, K.; Bakos, G. Á.; Hartman, J. D.; Jordán, A.; Mancini, L.; Mohler-Fischer, M. et al. (2013), "HATS-3b: AN INFLATED HOT JUPITER TRANSITING AN F-TYPE STAR", The Astronomical Journal 146 (5): 113, doi:10.1088/0004-6256/146/5/113, Bibcode: 2013AJ....146..113B
- ↑ 5.0 5.1 Bonomo, A. S. et al. (June 2017). "The GAPS Programme with HARPS-N at TNG. XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy & Astrophysics 602: A107. doi:10.1051/0004-6361/201629882. Bibcode: 2017A&A...602A.107B.
- ↑ Evans, D. F.; Southworth, J.; Maxted, P. F. L.; Skottfelt, J.; Hundertmark, M.; Jørgensen, U. G.; Dominik, M.; Alsubai, K. A. et al. (2016), "High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP)", Astronomy & Astrophysics 589: A58, doi:10.1051/0004-6361/201527970
- ↑ Addison, B. C.; Tinney, C. G.; Wright, D. J.; Bayliss, D. (2014), "A SPIN-ORBIT ALIGNMENT FOR THE HOT JUPITER HATS-3b", The Astrophysical Journal 792 (2): 112, doi:10.1088/0004-637X/792/2/112, Bibcode: 2014ApJ...792..112A
Coordinates: 
20h 49m 49.7853s, −24° 25′ 43.5398″
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