| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Gemini[1] |
| Right ascension | 07h32m 44.2174s[2] |
| Declination | +33° 50′ 06.115″[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: −0.125(24) mas/yr[2] Dec.: −2.444(23) mas/yr[2] |
| Parallax (π) | 2.5186 ± 0.0195 mas[2] |
| Distance | 1,290 ± 10 ly (397 ± 3 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 |
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]
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 |
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