This page summarises the information held within TEPCat for the transiting planetary system HAT-P-22. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2011ApJ...742..116B | |
| Date of discovery paper | 2010 / 8 / 23 | y / m / d |
| Data/telescope used for discovery | HAT | |
| Right ascension | 10 22 43.51 | h m s |
| Declination | +50 07 42.0 | d m s |
| Right ascension (decimal) | 155.68129 | degrees |
| Declination (decimal) | 50.12833 | degrees |
| V-band apparent magnitude | 9.73 | mag |
| K-band apparent magnitude | 7.84 | mag |
| Transit duration | 0.1196 ( 2.870 ) | day hour |
| Transit depth | 1.5 | % |
| Time of mid-transit | 2454891.67399 ± 0.00013 | HJD or BJD |
| Orbital period | 3.21223265 ± 0.00000010 | days |
| Reference for orbital ephemeris | 2023ApJS..268....2S |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5314 ± 50 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.30 ± 0.09 | dex |
| Stellar mass | 0.936 ± 0.043 | Msun |
| Stellar radius | 1.062 ± 0.048 | Rsun |
| Stellar logarithmic surface gravity | 4.357 ± 0.039 | c.g.s. |
| Stellar mean density | 0.781 ± 0.099 ( 1.10 ± 0.14 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.016 ± 0.009 | |
| Orbital semimajor axis | 0.04171 ± 0.00065 | AU |
| Planetary mass | 2.192 ± 0.077 ( 696 ± 24 ) | Mjup Mearth |
| Planetary radius | 1.060 ± 0.073 ( 11.88 ± 0.82 ) | Rjup Rearth |
| Planetary surface gravity | 48.3 ± 6.6 3.68 ± 0.06 | m/s2 log(cgs) |
| Planetary mean density | 1.72 ± 0.35 ( 2.28 ± 0.46 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1293 ± 29 | K |
| Reference of detailed study | 2018A+A...613A..41M |
| Reference | λ (degrees) |
|---|---|
| Mancini et al. (2018) | −2.1 ± 3.0 |
Page generated on 2024/09/10 John Southworth (Keele University, UK)