This page summarises the information held within TEPCat for the transiting planetary system Kepler-12. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2011ApJS..197....9F | |
| Date of discovery paper | 2011 / 9 / 9 | y / m / d |
| Data/telescope used for discovery | Kepler | |
| Right ascension | 19 04 58.42 | h m s |
| Declination | +50 02 25.3 | d m s |
| Right ascension (decimal) | 286.24342 | degrees |
| Declination (decimal) | 50.04036 | degrees |
| V-band apparent magnitude | 13.53 | mag |
| K-band apparent magnitude | 12.07 | mag |
| Transit duration | 0.19573 ( 4.6975 ) | day hour |
| Transit depth | 1.6 | % |
| Time of mid-transit | 2455004.00835 ± 0.00002 | HJD or BJD |
| Orbital period | 4.4379637 ± 0.0000002 | days |
| Reference for orbital ephemeris | 2011ApJS..197....9F |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5947 ± 100 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.07 ± 0.04 | dex |
| Stellar mass | 1.157 +0.148 −0.078 | Msun |
| Stellar radius | 1.490 +0.061 −0.038 | Rsun |
| Stellar logarithmic surface gravity | 4.155 +0.018 −0.014 | c.g.s. |
| Stellar mean density | 0.350 +0.006 −0.009 ( 0.4938 +0.0085 −0.0127 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.0555 +0.0022 −0.0013 | AU |
| Planetary mass | 0.430 +0.053 −0.044 ( 136 +16 −13 ) | Mjup Mearth |
| Planetary radius | 1.706 +0.069 −0.039 ( 19.12 + 0.77 − 0.44 ) | Rjup Rearth |
| Planetary surface gravity | 3.66 +0.33 −0.34 2.56 +0.04 −0.04 | m/s2 log(cgs) |
| Planetary mean density | 0.081 ± 0.008 ( 0.107 ± 0.011 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1485 ± 25 | K |
| Reference of detailed study | 2012MNRAS.426.1291S |
Kepler-12 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/01/01 John Southworth (Keele University, UK)