This page summarises the information held within TEPCat for the transiting planetary system Kepler-20d. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2012ApJ...749...15G | |
| Date of discovery paper | 2011 / 12 / 21 | y / m / d |
| Data/telescope used for discovery | Kepler | |
| Right ascension | 19 10 47.52 | h m s |
| Declination | +42 20 19.4 | d m s |
| Right ascension (decimal) | 287.69800 | degrees |
| Declination (decimal) | 42.33872 | degrees |
| V-band apparent magnitude | 12.65 | mag |
| K-band apparent magnitude | 10.87 | mag |
| Transit duration | 0.302 ( 7.25 ) | day hour |
| Transit depth | 0.083 | % |
| Time of mid-transit | 2454997.7303 ± 0.0014 | HJD or BJD |
| Orbital period | 77.61130 ± 0.00012 | days |
| Reference for orbital ephemeris | 2016AJ....152..160B |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5495 ± 50 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.07 ± 0.08 | dex |
| Stellar mass | 0.948 ± 0.051 | Msun |
| Stellar radius | 0.964 ± 0.018 | Rsun |
| Stellar logarithmic surface gravity | 4.446 ± 0.01 | c.g.s. |
| Stellar mean density | 1.07 ± 0.27 ( 1.51 ± 0.38 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 +0.60 −0.0 | |
| Orbital semimajor axis | 0.3506 +0.0081 −0.0101 | AU |
| Planetary mass | 0.032 ± 0.012 ( 10.2 ± 3.8 ) | Mjup Mearth |
| Planetary radius | 0.2448 +0.0065 −0.0049 ( 2.744 +0.073 −0.055 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 2.0 ± 0.8 ( 2.7 ± 1.1 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 401 ± 13 | K |
| Reference of detailed study | 2016AJ....152..160B |
Kepler-20d does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2024/09/10 John Southworth (Keele University, UK)