This page summarises the information held within TEPCat for the transiting planetary system HAT-P-17. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2012ApJ...749..134H | |
| Date of discovery paper | 2010 / 8 / 24 | y / m / d |
| Data/telescope used for discovery | HAT | |
| Right ascension | 21 38 08.88 | h m s |
| Declination | +30 29 19.4 | d m s |
| Right ascension (decimal) | 324.53700 | degrees |
| Declination (decimal) | 30.48872 | degrees |
| V-band apparent magnitude | 10.54 | mag |
| K-band apparent magnitude | 8.54 | mag |
| Transit duration | 0.1663 ( 3.991 ) | day hour |
| Transit depth | 1.5 | % |
| Time of mid-transit | 2454801.16943 ± 0.00015 | HJD or BJD |
| Orbital period | 10.33853781 ± 0.00000060 | days |
| Reference for orbital ephemeris | 2022A+A...664A.162M |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5350 ± 20 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.02 ± 0.09 | dex |
| Stellar mass | 0.886 ± 0.038 | Msun |
| Stellar radius | 0.860 ± 0.024 | Rsun |
| Stellar logarithmic surface gravity | 4.516 ± 0.027 | c.g.s. |
| Stellar mean density | 1.39 ± 0.12 ( 1.96 ± 0.17 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.3417 ± 0.0036 | |
| Orbital semimajor axis | 0.0892 ± 0.0013 | AU |
| Planetary mass | 0.558 ± 0.018 ( 177.38 ± 5.72 ) | Mjup Mearth |
| Planetary radius | 1.015 ± 0.041 ( 11.38 ± 0.46 ) | Rjup Rearth |
| Planetary surface gravity | 13.4 ± 1.0 3.13 ± 0.03 | m/s2 log(cgs) |
| Planetary mean density | 0.499 ± 0.058 ( 0.662 ± 0.077 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 800 ± 11 | K |
| Reference of detailed study | 2022A+A...664A.162M |
| Reference | λ (degrees) |
|---|---|
| Fulton et al. (2013) | 19 + 14 - 16 |
| Mancini et al. (2022) | −27.5 ± 6.7 |
Page generated on 2025/01/01 John Southworth (Keele University, UK)