This page summarises the information held within TEPCat for the transiting planetary system Kepler-8. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2010ApJ...724.1108J | |
| Date of discovery paper | 2010 / 1 / 5 | y / m / d |
| Data/telescope used for discovery | Kepler | |
| Right ascension | 18 45 09.14 | h m s |
| Declination | +42 27 03.8 | d m s |
| Right ascension (decimal) | 281.28808 | degrees |
| Declination (decimal) | 42.45106 | degrees |
| V-band apparent magnitude | 13.65 | mag |
| K-band apparent magnitude | 12.29 | mag |
| Transit duration | 0.1337 ( 3.209 ) | day hour |
| Transit depth | 0.98 | % |
| Time of mid-transit | 2455003.433596 ± 0.000064 | HJD or BJD |
| Orbital period | 3.52249905 ± 0.00000083 | days |
| Reference for orbital ephemeris | 2013A+A...560A.112M |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6213 ± 150 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.055 ± 0.05 | dex |
| Stellar mass | 1.230 ± 0.072 | Msun |
| Stellar radius | 1.495 ± 0.037 | Rsun |
| Stellar logarithmic surface gravity | 4.178 ± 0.022 | c.g.s. |
| Stellar mean density | 0.368 ± 0.014 ( 0.519 ± 0.020 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.0485 ± 0.0012 | AU |
| Planetary mass | 0.59 ± 0.12 ( 187 ± 38 ) | Mjup Mearth |
| Planetary radius | 1.381 ± 0.037 ( 15.48 ± 0.41 ) | Rjup Rearth |
| Planetary surface gravity | 7.7 ± 1.4 2.89 ± 0.07 | m/s2 log(cgs) |
| Planetary mean density | 0.210 ± 0.040 ( 0.279 ± 0.053 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1662 ± 41 | K |
| Reference of detailed study | 2011MNRAS.417.2166S |
| Reference | λ (degrees) |
|---|---|
| Jenkins et al. (2010) | −26.4 ± 10.1 |
| Albrecht et al. (2012) | 5 ± 7 |
Page generated on 2024/11/22 John Southworth (Keele University, UK)