This page summarises the information held within TEPCat for the transiting planetary system WASP-109. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | arXiv:1410.3449 | |
| Date of discovery paper | 2014 / 10 / 14 | y / m / d |
| Data/telescope used for discovery | WASP | |
| Right ascension | 15 28 13.23 | h m s |
| Declination | −16 24 38.8 | d m s |
| Right ascension (decimal) | 232.05513 | degrees |
| Declination (decimal) | -16.41078 | degrees |
| V-band apparent magnitude | 11.44 | mag |
| K-band apparent magnitude | 10.20 | mag |
| Transit duration | 0.11856 ( 2.8454 ) | day hour |
| Transit depth | 1.2 | % |
| Time of mid-transit | 2456361.19263 ± 0.00023 | HJD or BJD |
| Orbital period | 3.3190233 ± 0.0000042 | days |
| Reference for orbital ephemeris | arXiv:1410.3449 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6520 ± 140 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.22 ± 0.08 | dex |
| Stellar mass | 1.203 ± 0.090 | Msun |
| Stellar radius | 1.346 ± 0.044 | Rsun |
| Stellar logarithmic surface gravity | 4.260 ± 0.018 | c.g.s. |
| Stellar mean density | 0.493 ± 0.027 ( 0.696 ± 0.038 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 +0.32 −0.0 | |
| Orbital semimajor axis | 0.0463 ± 0.0011 | AU |
| Planetary mass | 0.91 ± 0.13 ( 289 ± 41 ) | Mjup Mearth |
| Planetary radius | 1.443 ± 0.053 ( 16.17 ± 0.59 ) | Rjup Rearth |
| Planetary surface gravity | 10.0 ± 1.5 3.00 ± 0.06 | m/s2 log(cgs) |
| Planetary mean density | 0.303 ± 0.048 ( 0.402 ± 0.064 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1685 ± 40 | K |
| Reference of detailed study | arXiv:1410.3449 |
| Reference | λ (degrees) |
|---|---|
| Addison et al. (2018) | 99 + 10 - 9 |
Page generated on 2023/09/17 John Southworth (Keele University, UK)