This page summarises the information held within TEPCat for the transiting planetary system HAT-P-7. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2008ApJ...680.1450P | |
| Date of discovery paper | 2008 / 1 / 12 | y / m / d |
| Data/telescope used for discovery | HAT | |
| Right ascension | 19 28 59.36 | h m s |
| Declination | +47 58 10.3 | d m s |
| Right ascension (decimal) | 292.24733 | degrees |
| Declination (decimal) | 47.96953 | degrees |
| V-band apparent magnitude | 10.46 | mag |
| K-band apparent magnitude | 9.33 | mag |
| Transit duration | 0.164303 ( 3.94327 ) | day hour |
| Transit depth | 0.67 | % |
| Time of mid-transit | 2454954.358557 ± 0.000006 | HJD or BJD |
| Orbital period | 2.204735391 ± 0.000000017 | days |
| Reference for orbital ephemeris | 2021MNRAS.503.4092B |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6310 ± 15 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.32 ± 0.04 | dex |
| Stellar mass | 1.59 ± 0.03 | Msun |
| Stellar radius | 2.02 ± 0.01 | Rsun |
| Stellar logarithmic surface gravity | 4.029 ± 0.003 | c.g.s. |
| Stellar mean density | 0.1919 ± 0.0025 ( 0.2708 ± 0.0035 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0016 +0.0034 −0.0010 | |
| Orbital semimajor axis | 0.03805 ± 0.00036 | AU |
| Planetary mass | 1.87 ± 0.03 ( 594.45 ± 9.54 ) | Mjup Mearth |
| Planetary radius | 1.526 ± 0.008 ( 17.105 ± 0.090 ) | Rjup Rearth |
| Planetary surface gravity | 20.77 ± 0.33 3.317 ± 0.007 | m/s2 log(cgs) |
| Planetary mean density | 0.50 ± 0.01 ( 0.663 ± 0.013 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 2194 ± 27 | K |
| Reference of detailed study | 2014PASJ...66...94B |
| Reference | λ (degrees) |
|---|---|
| Winn et al. (2009) | 182.5 ± 9.4 |
| Narita et al. (2009) | −132.6 + 10.5 - 16.3 |
| Albrecht et al. (2012) | 155 ± 37 |
| Benomar et al. (2014) | 220.3 + 8.2 - 9.3 |
| Lund et al. (2014) | −999 ± -999 |
| Masuda (2015) solution 1 | 142 + 12 - 16 |
| Masuda (2015) solution 2 | 136 + 16 - 22 |
| Campante et al. (2016) | −999 ± -999 |
Page generated on 2026/01/29 John Southworth (Keele University, UK)