HAT-P-30
HAT-P-30, also known as WASP-51, is the primary of a binary star system about 700 light-years away. It is a G-type main-sequence star. The star’s age is much younger than the Sun. HAT-P-30 has a similar concentration of heavy elements compared to the Sun.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Hydra |
| Right ascension | 08h 15m 47.9805s[1] |
| Declination | +05° 50′ 12.3521″[1] |
| Apparent magnitude (V) | 10.35 |
| Characteristics | |
| Evolutionary stage | main-sequence star |
| Spectral type | G0V |
| Astrometry | |
| Radial velocity (Rv) | 44.581[1] km/s |
| Proper motion (μ) | RA: -17.516[1] mas/yr Dec.: 23.782[1] mas/yr |
| Parallax (π) | 4.645 ± 0.0476[2] mas |
| Distance | 702 ± 7 ly (215 ± 2 pc) |
| Orbit[3] | |
| Primary | HAT-P-30 |
| Companion | HAT-P-30 B |
| Semi-major axis (a) | 3.842±0.007" (827 AU) |
| Details[4] | |
| Mass | 1.18±0.03 M☉ |
| Radius | 1.33±0.03 R☉ |
| Surface gravity (log g) | 4.26±0.01 cgs |
| Temperature | 6250±100 K |
| Metallicity [Fe/H] | -0.08±0.08 dex |
| Rotational velocity (v sin i) | 3.6±0.4 km/s |
| Age | 1.0+0.8 −0.5[5] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | 1909 dead link] |
The faint stellar companion was detected in 2013 at a projected separation of 3.842±0.007″.[3]
Planetary system
In 2011 a transiting hot Jupiter planet b was independently detected by two teams.[5][4] The planet's equilibrium temperature is 1695 K.[6]
The planetary orbit is strongly misaligned with the equatorial plane of the star, the misalignment angle being equal to 73.5±9.0°.[5]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.733±0.023 MJ | 0.04118±0.00031 | 2.8106084±0.0000011 | 0.035±0.024[5] | 82.48+0.14 −0.17° |
1.469+0.039 −0.037 RJ |
References
- "BD+06 1909". SIMBAD. Centre de données astronomiques de Strasbourg.
- Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- Wöllert, Maria; Brandner, Wolfgang (2015), "A Lucky Imaging search for stellar sources near 74 transit hosts", Astronomy & Astrophysics, 579: A129, arXiv:1506.05456, Bibcode:2015A&A...579A.129W, doi:10.1051/0004-6361/201526525, S2CID 118903879
- Enoch, B.; Anderson, D. R.; Barros, S. C. C.; Brown, D. J. A.; Cameron, A. Collier; Faedi, F.; Gillon, M.; Hébrard, G.; Lister, T. A.; Queloz, D.; Santerne, A.; Smalley, B.; Street, R. A.; Triaud, A. H. M. J.; West, R. G.; Bouchy, F.; Bento, J.; Butters, O.; Fossati, L.; Haswell, C. A.; Hellier, C.; Holmes, S.; Jehen, E.; Lendl, M.; Maxted, P. F. L.; McCormac, J.; Miller, G. R. M.; Moulds, V.; Moutou, C.; et al. (2011), "WASP-35b, WASP-48b, AND HAT-P-30b/WASP-51b: TWO NEW PLANETS AND AN INDEPENDENT DISCOVERY OF a HAT PLANET", The Astronomical Journal, 142 (3): 86, arXiv:1104.2827, Bibcode:2011AJ....142...86E, doi:10.1088/0004-6256/142/3/86, S2CID 63996398
- Johnson, John Asher; Winn, J. N.; Bakos, G. Á.; Hartman, J. D.; Morton, T. D.; Torres, G.; Kovács, Géza; Latham, D. W.; Noyes, R. W.; Sato, B.; Esquerdo, G. A.; Fischer, D. A.; Marcy, G. W.; Howard, A. W.; Buchhave, L. A.; Fűrész, G.; Quinn, S. N.; Béky, B.; Sasselov, D. D.; Stefanik, R. P.; Lázár, J.; Papp, I.; Sári, P. (2011), "HAT-P-30b: A transiting hot Jupiter on a highly oblique orbit", The Astrophysical Journal, 735: 24, arXiv:1103.3825, doi:10.1088/0004-637X/735/1/24, S2CID 53689766
- Saeed, M. I.; Goderya, S. N.; Chishtie, F. A. (2020), Multi-color photometry and parameters estimation of Jupiter-sized exoplanets; TRES-3b, WASP-2b and HATP-30b, arXiv:2011.07169
- Maciejewski, G.; Dimitrov, D.; Mancini, L.; Southworth, J.; Ciceri, S.; D'Ago, G.; Bruni, I.; Raetz, St.; Nowak, G.; Ohlert, J.; Puchalski, D.; Saral, G.; Derman, E.; Petrucci, R.; Jofre, E.; Seeliger, M.; Henning, T. (2016), New transit observations for HAT-P-30 b, HAT-P-37 b, TrES-5 b, WASP-28 b, WASP-36 b, and WASP-39 b, arXiv:1603.03268
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