HAT-P-33

HAT-P-33
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Gemini[1]
Right ascension 07h 32m 44.2186s[2]
Declination +33° 50′ 06.115″[2]
Apparent magnitude (V) 11.188[3]
Characteristics
Spectral type late-F[3]
Astrometry
Proper motion (μ) RA: −1.140±1.667[2] mas/yr
Dec.: −2.467±1.660[2] mas/yr
Parallax (π)2.40 ± 0.63[2] mas
Distanceapprox. 1,400 ly
(approx. 400 pc)
Details
Mass1.375±0.040[3] M☉
Radius1.637±0.034[3] R☉
Luminosity4.15±0.33[3] L☉
Surface gravity (log g)4.15±0.01[3] cgs
Temperature6446±88[3] K
Metallicity [Fe/H]0.07±0.08[3] dex
Rotational velocity (v sin i)13.7±0.5[3] km/s
Age2.3±0.3[3] Gyr
Other designations
2MASS J07324421+335006, GSC 2461-00988, TYC 2461-988-1
Database references
SIMBADdata

HAT-P-33 (2MASS J07324421+335006, GSC 2461-00988) is a late-F dwarf star. It is orbited by a planet HAT-P-33b.[3] A search for a binary companion star using adaptive optics at the MMT Observatory was negative.[4]

Planetary system

The transiting hot Jupiter exoplanet orbiting HAT-P-33 was discovered by the HATNet Project in 2011. An effort to detect transit timing variations due to other planets found none.[5]

The HAT-P-33 planetary system[5]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 0.72+0.13
−0.12 MJ		 0.0505±0.0018 3.47447472±0.00000088 0.180+0.11
−0.096		 88.2+1.2
−1.3°		 1.87+0.26
−0.20 RJ

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific. 99 (617): 695–699. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Vizier query form
  2. 1 2 3 4 5 Brown, A. G. A; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics. 595. A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512. Gaia Data Release 1 catalog entry
  3. 1 2 3 4 5 6 7 8 9 10 11 Hartman, J. D.; et al. (2011). "HAT-P-32b and HAT-P-33b: Two Highly Inflated Hot Jupiters Transiting High-jitter Stars". The Astrophysical Journal. 742 (1). 59. arXiv:1106.1212. Bibcode:2011ApJ...742...59H. doi:10.1088/0004-637X/742/1/59.
  4. ↑ Adams, E. R.; et al. (2013). "Adaptive Optics Images. II. 12 Kepler Objects of Interest and 15 Confirmed Transiting Planets". The Astronomical Journal. 146 (1). 9. arXiv:1305.6548. Bibcode:2013AJ....146....9A. doi:10.1088/0004-6256/146/1/9.
  5. 1 2 Wang, Yong-Hao; et al. (2017). "Transiting Exoplanet Monitoring Project (TEMP). II. Refined System Parameters and Transit Timing Analysis of HAT-P-33b". The Astronomical Journal. 154 (2). 49. arXiv:1705.08605. Bibcode:2017AJ....154...49W. doi:10.3847/1538-3881/aa7519.



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