This page summarises the information held within TEPCat for the transiting planetary system Kepler-20b. 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 | 0.106 ( 2.54 ) | day hour |
| Transit depth | 0.040 | % |
| Time of mid-transit | 2454967.50201 ± 0.00023 | HJD or BJD |
| Orbital period | 3.6961153 ± 0.0000010 | 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 | 0.03 +0.09 −0.03 | |
| Orbital semimajor axis | 0.0463 +0.0009 −0.0015 | AU |
| Planetary mass | 0.0305 +0.0044 −0.0045 ( 9.7 +1.4 −1.4 ) | Mjup Mearth |
| Planetary radius | 0.1667 +0.0059 −0.0030 ( 1.869 +0.066 −0.034 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 6.2 +1.1 −1.0 ( 8.2 +1.5 −1.3 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1105 ± 37 | K |
| Reference of detailed study | 2016AJ....152..160B |
Kepler-20b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/02/12 John Southworth (Keele University, UK)