This page summarises the information held within TEPCat for the transiting system K2-247b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2018AJ....156...78L | |
| Date of discovery paper | 2018 / 7 / 2 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 12 35 34.48 | h m s |
| Declination | −10 04 09.2 | d m s |
| Right ascension (decimal) | 188.89367 | degrees |
| Declination (decimal) | -10.06922 | degrees |
| V-band apparent magnitude | 13.98 | mag |
| K-band apparent magnitude | 11.56 | mag |
| Transit duration | 0.0756 ( 1.814 ) | day hour |
| Transit depth | 0.08 | % |
| Time of mid-transit | 2457582.97700 ± 0.00640 | HJD or BJD |
| Orbital period | 2.2502100 ± 0.0003300 | days |
| Reference for orbital ephemeris | 2018AJ....156...78L |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 4667 +305 −183 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.08 ± 0.22 | dex |
| Stellar mass | 0.740 ± 0.030 | Msun |
| Stellar radius | 0.690 +0.020 −0.010 | Rsun |
| Stellar logarithmic surface gravity | 4.630 +0.010 −0.020 | c.g.s. |
| Stellar mean density | 1.700 ± 1.100 ( 2.4 ± 1.6 ) | ρsun g cm-3 |
| Orbital eccentricity | ||
| Orbital semimajor axis | 0.03040 ± 0.00040 | AU |
| Planetary mass | Mjup Mearth | |
| Planetary radius | 0.189 +0.017 −0.014 ( 2.12 +0.19 −0.16 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | 979 +52 −51 | K |
| Reference of detailed study | 2018AJ....156...78L |
K2-247b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/08/27 John Southworth (Keele University, UK)