This page summarises the information held within TEPCat for the transiting planetary system K2-223b. 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 21 13.47 | h m s |
| Declination | −10 16 55.3 | d m s |
| Right ascension (decimal) | 185.30612 | degrees |
| Declination (decimal) | -10.28203 | degrees |
| V-band apparent magnitude | 11.18 | mag |
| K-band apparent magnitude | 9.84 | mag |
| Transit duration | 0.0470 ( 1.128 ) | day hour |
| Transit depth | 0.01 | % |
| Time of mid-transit | 2457637.6618 ± 0.0026 | HJD or BJD |
| Orbital period | 0.505556 ± 0.000047 | days |
| Reference for orbital ephemeris | arXiv:2609.01721 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5858 ± 26 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | 0.18 ± 0.06 | dex |
| Stellar mass | 1.07 ± 0.07 | Msun |
| Stellar radius | 1.05 ± 0.10 | Rsun |
| Stellar logarithmic surface gravity | 4.56 ± 0.16 | c.g.s. |
| Stellar mean density | 1.12 +0.21 −0.26 ( 1.58 +0.30 −0.37 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.0134 ± 0.0016 | AU |
| Planetary mass | 0.0 +0.0088 −0.0 ( 0.0 +2.8 −0.0 ) | Mjup Mearth |
| Planetary radius | 0.072 +0.010 −0.009 ( 0.81 +0.11 −0.10 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | 2484 +114 −77 | K |
| Reference of detailed study | arXiv:2609.01721 |
K2-223b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2026/10/04 John Southworth (Keele University, UK)