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 |
| Right ascension | 23 59 36.07 | h m s |
| Declination | −35 01 52.9 | d m s |
| 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 | 2454679.33741 ± 0.00047 | HJD or BJD |
| Orbital period | 8.15875416 ± 0.00000016 | days |
| Reference for orbital ephemeris | 2010A+A...517L...1Q |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5600 ± 80 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.17 ± 0.07 | dex |
| Stellar mass | 1.030 +0.054 −0.061 | Msun |
| Stellar radius | 0.945 +0.051 −0.036 | Rsun |
| Stellar logarithmic surface gravity | 4.5 ± 0.1 | c.g.s. |
| Stellar mean density | 1.22 +0.17 −0.15 ( 1.72 +0.24 −0.21 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.3100 +0.0029 −0.0024 | |
| Orbital semimajor axis | 0.0801 +0.0014 −0.0016 | AU |
| Planetary mass | 2.25 ± 0.08 ( 715 ± 25 ) | Mjup Mearth |
| Planetary radius | 1.038 +0.007 −0.047 ( 11.635 + 0.078 − 0.527 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | K | |
| Reference of detailed study | 2010A+A...517L...1Q |
| Reference | λ (degrees) |
|---|---|
| Queloz et al. (2010) | −123.3 + 3.4 - 4.4 |
| Bourrier et al. (2017) | −143.0 + 1.6 - 1.5 |
WASP-8 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.
Page generated on 2017/08/07 John Southworth (Keele University, UK)