This page summarises the information held within TEPCat for the transiting system K2-123b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2018AJ....156..277L | |
| Date of discovery paper | 2018 / 10 / 10 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 08 57 46.60 | h m s |
| Declination | +21 27 12.7 | d m s |
| Right ascension (decimal) | 134.44417 | degrees |
| Declination (decimal) | 21.45353 | degrees |
| V-band apparent magnitude | 13.73 | mag |
| K-band apparent magnitude | 11.05 | mag |
| Transit duration | 0.1640 ( 3.936 ) | day hour |
| Transit depth | 0.18 | % |
| Time of mid-transit | 2457147.49734 ± 0.00438 | HJD or BJD |
| Orbital period | 30.9515240 ± 0.0036250 | days |
| Reference for orbital ephemeris | 2018AJ....156..277L |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 4035 ± 52 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | 0.03 ± 0.11 | dex |
| Stellar mass | 0.620 ± 0.010 | Msun |
| Stellar radius | 0.590 ± 0.010 | Rsun |
| Stellar logarithmic surface gravity | 4.690 ± 0.010 | c.g.s. |
| Stellar mean density | 3.200 +1.570 −1.168 ( 4.5 +2.2 −1.6 ) | ρsun g cm-3 |
| Orbital eccentricity | ||
| Orbital semimajor axis | 0.16490 ± 0.00080 | AU |
| Planetary mass | Mjup Mearth | |
| Planetary radius | 0.246 ± 0.014 ( 2.76 ± 0.16 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | 338 ± 5 | K |
| Reference of detailed study | 2018AJ....156..277L |
K2-123b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/08/27 John Southworth (Keele University, UK)