HAT-P-30

Last updated
HAT-P-30
Observation data
Epoch J2000       Equinox J2000
Constellation Hydra [1]
Right ascension 08h 15m 47.9802s [2]
Declination +05° 50′ 12.351″ [2]
Apparent magnitude  (V)10.35 [3]
Characteristics
Evolutionary stage main sequence [2]
Spectral type G0 [4]
Astrometry
Radial velocity (Rv)45.14±0.37 [2] km/s
Proper motion (μ)RA: −17.231 mas/yr [2]
Dec.: +23.875 mas/yr [2]
Parallax (π)4.8037±0.0148  mas [2]
Distance 679 ± 2  ly
(208.2 ± 0.6  pc)
Details
Mass 1.175±0.025 [5]   M☉
Radius 1.314±0.015 [5]   R☉
Luminosity 2.37±0.01 [2]   L☉
Surface gravity (log g)4.270±0.007 [5]   cgs
Temperature 6,252±100 [5]   K
Metallicity [Fe/H]−0.079±0.079 [5]   dex
Rotational velocity (v sin i)3.6±0.4 [6]  km/s
Age 4.1±0.6 [2]   Gyr
Other designations
HAT-P-30, BD+06 1909, TOI-490, TIC 455135327, WASP-51, GSC 00208-00722, 2MASS J08154797+0550121 [7]
Database references
SIMBAD data
Exoplanet Archive data

HAT-P-30, also known as WASP-51, is the primary of a binary star system about 679 light-years away in the constellation Hydra. It is a G-type main-sequence star. HAT-P-30 has a similar concentration of heavy elements compared to the Sun.

The faint stellar companion was detected in 2013 at a projected separation of 3.842±0.007″. [8]

Planetary system

In 2011 a transiting hot Jupiter planet, HAT-P-30b, was independently detected by two teams, the HATNet Project [9] and the Wide Angle Search for Planets (WASP). [6]

The planetary orbit is strongly misaligned with the equatorial plane of the star, the misalignment angle being equal to 73.5±9.0°. [9]

Since 2022, an additional planet in the system is suspected based on transit timing variations. [5]

The HAT-P-30 planetary system [5]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b0.723±0.023  MJ 0.04114±0.000302.8106006(4)<0.016 [10] 82.56±0.08° 1.426±0.020  RJ

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific . 99 (617): 695. Bibcode:1987PASP...99..695R. doi: 10.1086/132034 . Constellation record for this object at VizieR.
  2. 1 2 3 4 5 6 7 8 9 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  3. ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000), "The Tycho-2 catalogue of the 2.5 million brightest stars", Astronomy and Astrophysics, 355: L27 –L30, Bibcode:2000A&A...355L..27H, ISSN   0004-6361
  4. ↑ Ginski, C.; Mugrauer, M.; Seeliger, M.; Löhne, T. (November 2013), "The multiplicity status of three exoplanet host stars", Astronomy & Astrophysics , 559: 6, Bibcode:2013A&A...559A..71G, doi: 10.1051/0004-6361/201322274
  5. 1 2 3 4 5 6 7 Bai, Lu; Gu, Shenghong; Wang, Xiaobin; Sun, Leilei; Kwok, Chi-Tai; Hui, Ho-Keung (2022), "WASP-35 and HAT-P-30/WASP-51: Reanalysis using TESS and Ground-based Transit Photometry", The Astronomical Journal, 163 (5): 208, arXiv: 2203.02866 , Bibcode:2022AJ....163..208B, doi: 10.3847/1538-3881/ac5b6a , S2CID   247292453
  6. 1 2 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
  7. ↑ "BD+06 1909", SIMBAD , Centre de données astronomiques de Strasbourg
  8. ↑ 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
  9. 1 2 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 (1): 24, arXiv: 1103.3825 , Bibcode:2011ApJ...735...24J, doi:10.1088/0004-637X/735/1/24, S2CID   53689766
  10. ↑ Bonomo, A. S.; Desidera, 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. arXiv: 1704.00373 . Bibcode:2017A&A...602A.107B. doi: 10.1051/0004-6361/201629882 .
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