Astronomy:HAT-P-30
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| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Hydra |
| Right ascension | 08h 15m 47.9802s[1] |
| Declination | +05° 50′ 12.351″[1] |
| Apparent magnitude (V) | 10.35[2] |
| Characteristics | |
| Evolutionary stage | main sequence[1] |
| Spectral type | G0[3] |
| Astrometry | |
| Radial velocity (Rv) | 44.14[1] km/s |
| Proper motion (μ) | RA: −17.231[1] mas/yr Dec.: +23.875[1] mas/yr |
| Parallax (π) | 4.8037 ± 0.0099[1] mas |
| Distance | 679 ± 1 ly (208.2 ± 0.4 pc) |
| Details | |
| Mass | 1.175±0.025[4] M☉ |
| Radius | 1.314±0.015[4] R☉ |
| Luminosity | 2.37±0.01[1] L☉ |
| Surface gravity (log g) | 4.270±0.007[4] cgs |
| Temperature | 6,252±100[4] K |
| Metallicity [Fe/H] | −0.079±0.079[4] dex |
| Rotational velocity (v sin i) | 3.6±0.4[5] km/s |
| Age | 4.1±0.6[1] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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. 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″.[7]
Planetary system
In 2011 a transiting hot Jupiter planet b was independently detected by two teams.[8][5]
The planetary orbit is strongly misaligned with the equatorial plane of the star, the misalignment angle being equal to 73.5±9.0°.[8]
Since 2022, an additional planet in the system is suspected based on transit timing variations.[4]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.723±0.023 MJ | 0.04114±0.00030 | 2.8106006±0.0000004 | 0 | 82.56±0.08° | 1.426±0.020 RJ |
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 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.
- ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P. et al. (March 2000), "The Tycho-2 catalogue of the 2.5 million brightest stars", Astronomy and Astrophysics 355: L27–L30, ISSN 0004-6361, Bibcode: 2000A&A...355L..27H
- ↑ Ginski, C.; Mugrauer, M.; Seeliger, M.; Löhne, T. (November 2013), "The multiplicity status of three exoplanet host stars", Astronomy & Astrophysics 559: 6, doi:10.1051/0004-6361/201322274, Bibcode: 2013A&A...559A..71G
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 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, doi:10.3847/1538-3881/ac5b6a, Bibcode: 2022AJ....163..208B
- ↑ 5.0 5.1 Enoch, B.; Anderson, D. R.; Barros, S. C. C.; Brown, D. J. A.; Cameron, A. Collier; Faedi, F.; Gillon, M.; Hébrard, G. 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, doi:10.1088/0004-6256/142/3/86, Bibcode: 2011AJ....142...86E
- ↑ "BD+06 1909". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=BD%2B06+1909.
- ↑ Wöllert, Maria; Brandner, Wolfgang (2015), "A Lucky Imaging search for stellar sources near 74 transit hosts", Astronomy & Astrophysics 579: A129, doi:10.1051/0004-6361/201526525, Bibcode: 2015A&A...579A.129W
- ↑ 8.0 8.1 Johnson, John Asher; Winn, J. N.; Bakos, G. Á.; Hartman, J. D.; Morton, T. D.; Torres, G.; Kovács, Géza; Latham, D. W. et al. (2011), "HAT-P-30b: A transiting hot Jupiter on a highly oblique orbit", The Astrophysical Journal 735 (1): 24, doi:10.1088/0004-637X/735/1/24, Bibcode: 2011ApJ...735...24J
Coordinates: 
08h 15m 47.9805s, +05° 50′ 12.3521″
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