This page summarises the information held within TEPCat for the transiting planetary system K2-233b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2018AJ....155..222D | |
| Date of discovery paper | 2018 / 3 / 15 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 15 21 55.20 | h m s |
| Declination | −20 13 54.0 | d m s |
| Right ascension (decimal) | 230.48000 | degrees |
| Declination (decimal) | -20.23167 | degrees |
| V-band apparent magnitude | 10.73 | mag |
| K-band apparent magnitude | 8.38 | mag |
| Transit duration | 0.0828 ( 1.987 ) | day hour |
| Transit depth | 0.018 | % |
| Time of mid-transit | 2457791.6910 ± 0.0026 | HJD or BJD |
| Orbital period | 2.46750 ± 0.00004 | days |
| Reference for orbital ephemeris | 2020A+A...640A..48L |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5033 +41 −35 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.09 ± 0.03 | dex |
| Stellar mass | 0.79 ± 0.01 | Msun |
| Stellar radius | 0.71 ± 0.01 | Rsun |
| Stellar logarithmic surface gravity | 4.64 ± 0.01 | c.g.s. |
| Stellar mean density | 2.25 +0.04 −0.03 ( 3.175 +0.056 −0.042 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.079 +0.048 −0.029 | |
| Orbital semimajor axis | 0.03308 +0.00010 −0.00009 | AU |
| Planetary mass | 0.0075 +0.0047 −0.0041 ( 2.4 +1.5 −1.3 ) | Mjup Mearth |
| Planetary radius | 0.1173 ± 0.0032 ( 1.315 ± 0.036 ) | Rjup Rearth |
| Planetary surface gravity | 13 ± 8 3.1 ± 0.2 | m/s2 log(cgs) |
| Planetary mean density | 4.3 +2.4 −2.8 ( 5.7 +3.2 −3.7 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1121 +10 −9 | K |
| Reference of detailed study | 2023MNRAS.522.3458B |
K2-233b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/01/01 John Southworth (Keele University, UK)