This page summarises the information held within TEPCat for the transiting system K2-253b. 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 24 20.49 | h m s |
| Declination | −06 22 43.9 | d m s |
| Right ascension (decimal) | 186.08538 | degrees |
| Declination (decimal) | -6.37886 | degrees |
| V-band apparent magnitude | 14.47 | mag |
| K-band apparent magnitude | 12.95 | mag |
| Transit duration | 0.1288 ( 3.091 ) | day hour |
| Transit depth | 1.11 | % |
| Time of mid-transit | 2457583.99930 ± 0.00130 | HJD or BJD |
| Orbital period | 4.0016700 ± 0.0001300 | days |
| Reference for orbital ephemeris | 2018AJ....156...78L |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6027 +221 −240 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.00 +0.17 −0.19 | dex |
| Stellar mass | 1.080 +0.050 −0.080 | Msun |
| Stellar radius | 1.100 ± 0.040 | Rsun |
| Stellar logarithmic surface gravity | 4.390 +0.030 −0.050 | c.g.s. |
| Stellar mean density | 2.200 +0.400 −0.800 ( 3.10 +0.56 −1.13 ) | ρsun g cm-3 |
| Orbital eccentricity | ||
| Orbital semimajor axis | 0.05060 +0.00100 −0.00110 | AU |
| Planetary mass | Mjup Mearth | |
| Planetary radius | 1.130 +0.062 −0.054 ( 12.67 + 0.69 − 0.61 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | 1238 +57 −53 | K |
| Reference of detailed study | 2018AJ....156...78L |
K2-253b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/08/27 John Southworth (Keele University, UK)