This page summarises the information held within TEPCat for the transiting planetary system Kepler-4. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2010ApJ...713L.126B | |
| Date of discovery paper | 2010 / 1 / 6 | y / m / d |
| Data/telescope used for discovery | Kepler | |
| Right ascension | 19 02 27.68 | h m s |
| Declination | +50 08 08.7 | d m s |
| Right ascension (decimal) | 285.61533 | degrees |
| Declination (decimal) | 50.13575 | degrees |
| V-band apparent magnitude | 12.09 | mag |
| K-band apparent magnitude | 10.80 | mag |
| Transit duration | 0.1650 ( 3.960 ) | day hour |
| Transit depth | 0.087 | % |
| Time of mid-transit | 2454956.61132 ± 0.00092 | HJD or BJD |
| Orbital period | 3.213658 ± 0.000038 | days |
| Reference for orbital ephemeris | 2011MNRAS.417.2166S |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5857 ± 120 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.17 ± 0.06 | dex |
| Stellar mass | 1.173 +0.196 −0.100 | Msun |
| Stellar radius | 1.48 +0.33 −0.13 | Rsun |
| Stellar logarithmic surface gravity | 4.168 +0.063 −0.133 | c.g.s. |
| Stellar mean density | 0.362 +0.081 −0.136 ( 0.51 +0.11 −0.19 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.0449 +0.0024 −0.0012 | AU |
| Planetary mass | 0.075 +0.013 −0.011 ( 23.8 +4.1 −3.5 ) | Mjup Mearth |
| Planetary radius | 0.368 +0.074 −0.034 ( 4.12 +0.83 −0.38 ) | Rjup Rearth |
| Planetary surface gravity | 13.8 +3.3 −4.5 3.14 +0.09 −0.17 | m/s2 log(cgs) |
| Planetary mean density | 1.41 +0.48 −0.62 ( 1.87 +0.64 −0.82 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1620 +140 −60 | K |
| Reference of detailed study | 2011MNRAS.417.2166S |
Kepler-4 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/24 John Southworth (Keele University, UK)