This page summarises the information held within TEPCat for the transiting planetary system K2-266e. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2018AJ....156..245R | |
| Date of discovery paper | 2018 / 6 / 25 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 10 31 44.51 | h m s |
| Declination | +00 56 15.3 | d m s |
| Right ascension (decimal) | 157.93546 | degrees |
| Declination (decimal) | 0.93758 | degrees |
| V-band apparent magnitude | 11.81 | mag |
| K-band apparent magnitude | 8.90 | mag |
| Transit duration | 0.1522 ( 3.653 ) | day hour |
| Transit depth | 0.16 | % |
| Time of mid-transit | 2457938.5410 ± 0.0013 | HJD or BJD |
| Orbital period | 19.4937 ± 0.0007 | days |
| Reference for orbital ephemeris | arXiv:2503.08905 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 4285 +49 −57 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.12 +0.40 −0.42 | dex |
| Stellar mass | 0.686 ± 0.033 | Msun |
| Stellar radius | 0.703 +0.024 −0.022 | Rsun |
| Stellar logarithmic surface gravity | 4.581 +0.032 −0.037 | c.g.s. |
| Stellar mean density | 1.98 +0.21 −0.22 ( 2.79 +0.30 −0.31 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.035 ± 0.005 | |
| Orbital semimajor axis | 0.1249 +0.0019 −0.0020 | AU |
| Planetary mass | 0.0242 ± 0.0018 ( 7.69 ± 0.57 ) | Mjup Mearth |
| Planetary radius | 0.244 +0.012 −0.010 ( 2.73 +0.13 −0.11 ) | Rjup Rearth |
| Planetary surface gravity | 10.7 +3.4 −2.2 3.03 +0.12 −0.10 | m/s2 log(cgs) |
| Planetary mean density | 1.58 +0.31 −0.36 ( 2.10 +0.41 −0.48 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 490 ± 6 | K |
| Reference of detailed study | arXiv:2503.08905 |
K2-266e does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/24 John Southworth (Keele University, UK)