This page summarises the information held within TEPCat for the transiting planetary system WASP-122. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2016PASP..128f4401T | |
| Date of discovery paper | 2015 / 9 / 9 | y / m / d |
| Data/telescope used for discovery | WASP | |
| Right ascension | 07 13 12.34 | h m s |
| Declination | −42 24 35.1 | d m s |
| Right ascension (decimal) | 108.30142 | degrees |
| Declination (decimal) | -42.40975 | degrees |
| V-band apparent magnitude | 11.00 | mag |
| K-band apparent magnitude | 9.42 | mag |
| Transit duration | 0.09117 ( 2.1881 ) | day hour |
| Transit depth | 1.4 | % |
| Time of mid-transit | 2456665.22476 ± 0.00029 | HJD or BJD |
| Orbital period | 1.71005327 ± 0.00000022 | days |
| Reference for orbital ephemeris | 2022AcA....72....1M |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5720 ± 130 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.32 ± 0.09 | dex |
| Stellar mass | 1.239 ± 0.039 | Msun |
| Stellar radius | 1.52 ± 0.03 | Rsun |
| Stellar logarithmic surface gravity | 4.166 ± 0.016 | c.g.s. |
| Stellar mean density | 0.351 ± 0.018 ( 0.495 ± 0.025 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 +0.08 −0.0 | |
| Orbital semimajor axis | 0.03005 ± 0.00031 | AU |
| Planetary mass | 1.284 ± 0.032 ( 408 ± 10 ) | Mjup Mearth |
| Planetary radius | 1.743 ± 0.047 ( 19.54 ± 0.53 ) | Rjup Rearth |
| Planetary surface gravity | 9.66 +0.50 −0.48 2.98 +0.02 −0.02 | m/s2 log(cgs) |
| Planetary mean density | 0.243 ± 0.019 ( 0.322 ± 0.025 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1970 ± 50 | K |
| Reference of detailed study | 2016PASP..128f4401T |
| Reference | λ (degrees) |
|---|---|
| Stangret et al. (2024) | 0.09 + 0.88 - 0.90 |
Page generated on 2025/03/17 John Southworth (Keele University, UK)