This page summarises the information held within TEPCat for the transiting planetary system K2-3b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2015ApJ...804...10C | |
| Date of discovery paper | 2014 / 1 / 16 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 11 29 20.39 | h m s |
| Declination | −01 27 17.2 | d m s |
| Right ascension (decimal) | 172.33496 | degrees |
| Declination (decimal) | -1.45478 | degrees |
| V-band apparent magnitude | 12.17 | mag |
| K-band apparent magnitude | 8.56 | mag |
| Transit duration | 0.1075 ( 2.580 ) | day hour |
| Transit depth | 0.014 | % |
| Time of mid-transit | 2456813.4200 ± 0.0009 | HJD or BJD |
| Orbital period | 10.0545244 ± 0.0000007 | days |
| Reference for orbital ephemeris | arXiv:2609.17792 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3844 +61 −63 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.16 ± 0.08 | dex |
| Stellar mass | 0.549 +0.029 −0.027 | Msun |
| Stellar radius | 0.546 +0.018 −0.016 | Rsun |
| Stellar logarithmic surface gravity | 4.704 +0.023 −0.026 | c.g.s. |
| Stellar mean density | 3.39 +0.26 −0.28 ( 4.78 +0.37 −0.40 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.107 +0.057 −0.059 | |
| Orbital semimajor axis | 0.0747 +0.0013 −0.0012 | AU |
| Planetary mass | 0.0208 ± 0.0015 ( 6.61 ± 0.48 ) | Mjup Mearth |
| Planetary radius | 0.1856 ± 0.0062 ( 2.080 ± 0.069 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 | |
| Planetary mean density | 3.06 ± 0.39 ( 4.06 ± 0.52 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 501 ± 8 | K |
| Reference of detailed study | arXiv:2609.17792 |
K2-3b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2026/10/04 John Southworth (Keele University, UK)