This page summarises the information held within TEPCat for the transiting planetary system K2-108. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2017AJ....153..142P | |
| Date of discovery paper | 2017 / 2 / 2 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 08 13 31.65 | h m s |
| Declination | +16 25 10.6 | d m s |
| Right ascension (decimal) | 123.38188 | degrees |
| Declination (decimal) | 16.41961 | degrees |
| V-band apparent magnitude | 12.47 | mag |
| K-band apparent magnitude | 10.56 | mag |
| Transit duration | 0.16 ( 3.8 ) | day hour |
| Transit depth | 0.09 | % |
| Time of mid-transit | 2457145.0965 ± 0.0019 | HJD or BJD |
| Orbital period | 4.73401 ± 0.00024 | days |
| Reference for orbital ephemeris | 2017AJ....153..142P |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5474 ± 60 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.33 ± 0.04 | dex |
| Stellar mass | 1.121 +0.065 −0.053 | Msun |
| Stellar radius | 1.75 ± 0.14 | Rsun |
| Stellar logarithmic surface gravity | 3.99 ± 0.05 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.180 ± 0.042 | |
| Orbital semimajor axis | 0.0573 ± 0.0010 | AU |
| Planetary mass | 0.187 ± 0.014 ( 59.4 ± 4.5 ) | Mjup Mearth |
| Planetary radius | 0.471 ± 0.048 ( 5.28 ± 0.54 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 1.67 +0.58 −0.41 ( 2.22 +0.77 −0.54 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1446 ± 48 | K |
| Reference of detailed study | 2017AJ....153..142P |
K2-108 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/12 John Southworth (Keele University, UK)