This page summarises the information held within TEPCat for the transiting planetary system Kepler-9b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2010Sci...330...51H | |
| Date of discovery paper | 2010 / 8 / 27 | y / m / d |
| Data/telescope used for discovery | Kepler | |
| Right ascension | 19 02 17.76 | h m s |
| Declination | +38 24 03.2 | d m s |
| Right ascension (decimal) | 285.57400 | degrees |
| Declination (decimal) | 38.40089 | degrees |
| V-band apparent magnitude | 13.93 | mag |
| K-band apparent magnitude | 12.34 | mag |
| Transit duration | 0.15927 ( 3.8225 ) | day hour |
| Transit depth | 0.55 | % |
| Time of mid-transit | 2455439.51991 ± 0.0015 | HJD or BJD |
| Orbital period | 19.2259 ± 0.000048 | days |
| Reference for orbital ephemeris | 2018AJ....155...73W |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5774 ± 60 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.05 ± 0.07 | dex |
| Stellar mass | 1.022 +0.029 −0.039 | Msun |
| Stellar radius | 0.958 ± 0.020 | Rsun |
| Stellar logarithmic surface gravity | 4.49 +0.02 −0.03 | c.g.s. |
| Stellar mean density | 1.16 +0.08 −0.09 ( 1.64 +0.11 −0.13 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.06378 ± 0.00040 | |
| Orbital semimajor axis | 0.1428 ± 0.0014 | AU |
| Planetary mass | 0.1365 +0.0050 −0.0063 ( 43.4 +1.6 −2.0 ) | Mjup Mearth |
| Planetary radius | 0.736 ± 0.008 ( 8.250 ± 0.090 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 0.317 +0.045 −0.068 ( 0.421 +0.060 −0.090 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | K | |
| Reference of detailed study | 2019MNRAS.484.3233B |
| Reference | λ (degrees) |
|---|---|
| Wang et al. (2018) | −13 ± 16 |
Page generated on 2025/03/12 John Southworth (Keele University, UK)