This page summarises the information held within TEPCat for the transiting planetary system WASP-8. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2010A+A...517L...1Q | |
| Date of discovery paper | 2010 / 6 / 26 | y / m / d |
| Data/telescope used for discovery | WASP | |
| Right ascension | 23 59 36.07 | h m s |
| Declination | −35 01 52.9 | d m s |
| Right ascension (decimal) | 359.90029 | degrees |
| Declination (decimal) | -35.03136 | degrees |
| V-band apparent magnitude | 9.77 | mag |
| K-band apparent magnitude | 8.09 | mag |
| Transit duration | 0.1832 ( 4.397 ) | day hour |
| Transit depth | 1.3 | % |
| Time of mid-transit | 2458375.23865 ± 0.00011 | HJD or BJD |
| Orbital period | 8.15872562 ± 0.000000067 | days |
| Reference for orbital ephemeris | 2024MNRAS.530.2475Y |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5690 ± 36 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.29 ± 0.03 | dex |
| Stellar mass | 1.093 ± 0.033 | Msun |
| Stellar radius | 0.976 ± 0.021 | Rsun |
| Stellar logarithmic surface gravity | 4.498 ± 0.018 | c.g.s. |
| Stellar mean density | 1.176 ± 0.070 ( 1.659 ± 0.099 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.3100 +0.0029 −0.0024 | |
| Orbital semimajor axis | 0.0817 ± 0.0008 | AU |
| Planetary mass | 2.216 ± 0.047 ( 704 ± 14 ) | Mjup Mearth |
| Planetary radius | 1.165 ± 0.033 ( 13.06 ± 0.37 ) | Rjup Rearth |
| Planetary surface gravity | 42.5 ± 2.3 3.63 ± 0.02 | m/s2 log(cgs) |
| Planetary mean density | 1.31 ± 0.10 ( 1.74 ± 0.13 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 947 ± 12 | K |
| Reference of detailed study | 2020A+A...635A..74S |
| Reference | λ (degrees) |
|---|---|
| Queloz et al. (2010) | −123.3 + 3.4 - 4.4 |
| Bourrier et al. (2017) | −143.0 + 1.6 - 1.5 |
Page generated on 2025/03/24 John Southworth (Keele University, UK)