This page summarises the information held within TEPCat for the transiting planetary system K2-229d. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2018NatAs...2..393S | |
| Date of discovery paper | 2018 / 5 / 22 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 12 27 29.58 | h m s |
| Declination | −06 43 18.8 | d m s |
| Right ascension (decimal) | 186.87325 | degrees |
| Declination (decimal) | -6.72189 | degrees |
| V-band apparent magnitude | 10.98 | mag |
| K-band apparent magnitude | 9.05 | mag |
| Transit duration | 0.07 ( 1.7 ) | day hour |
| Transit depth | 0.10 | % |
| Time of mid-transit | 2457623.1 ± 0.5 | HJD or BJD |
| Orbital period | 31.0 ± 1.1 | days |
| Reference for orbital ephemeris | 2018NatAs...2..393S |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5185 ± 32 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.06 ± 0.02 | dex |
| Stellar mass | 0.804 +0.038 −0.048 | Msun |
| Stellar radius | 0.781 ± 0.012 | Rsun |
| Stellar logarithmic surface gravity | 4.56 +0.03 −0.05 | c.g.s. |
| Stellar mean density | 1.69 +0.13 −0.14 ( 2.38 +0.18 −0.20 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.1820 ± 0.0042 | AU |
| Planetary mass | 0.0 +0.079 −0.0 ( 0 +25 −0 ) | Mjup Mearth |
| Planetary radius | 0.236 ± 0.021 ( 2.65 ± 0.24 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 0.0 +7.2 −0.0 ( 0.0 +9.6 −0.0 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 522 ± 13 | K |
| Reference of detailed study | 2019ApJ...883...79D |
K2-229d does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/04/12 John Southworth (Keele University, UK)