HAT-P-33
HAT-P-33 (2MASS J07324421+335006, GSC 2461-00988) is a late-F dwarf star. It is orbited by a planet called HAT-P-33b.[4] A search for a binary companion star using adaptive optics at the MMT Observatory was negative.[6]
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Gemini[1] |
| Right ascension | 07h 32m 44.2171s[2] |
| Declination | +33° 50′ 06.1180″[2] |
| Apparent magnitude (V) | 11.120±0.050[3] |
| Characteristics | |
| Spectral type | late-F[4] |
| Apparent magnitude (B) | 11.583±0.066 [3] |
| Astrometry | |
| Proper motion (μ) | RA: 0.096±0.073[2] mas/yr Dec.: −2.647±0.070[2] mas/yr |
| Parallax (π) | 2.4966 ± 0.0475[2] mas |
| Distance | 1,310 ± 20 ly (401 ± 8 pc) |
| Details[4] | |
| Mass | 1.375±0.040 M☉ |
| Radius | 1.637±0.034 R☉ |
| Luminosity | 4.15±0.33 L☉ |
| Surface gravity (log g) | 4.15±0.01 cgs |
| Temperature | 6446±88 K |
| Metallicity [Fe/H] | 0.07±0.08 dex |
| Rotational velocity (v sin i) | 13.7±0.5 km/s |
| Age | 2.3±0.3 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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.[7]
| 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
- 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
- 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.
- Henden, A. A.; et al. (2016). "VizieR Online Data Catalog: AAVSO Photometric All Sky Survey (APASS) DR9 (Henden+, 2016)". VizieR On-line Data Catalog: II/336. Originally Published in: 2015AAS...22533616H. 2336. Bibcode:2016yCat.2336....0H. Vizier catalog entry
- 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. S2CID 118590713.
- "HAT-P-33". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-01-23.
- 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. S2CID 119117620.
- 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. S2CID 119245125.
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