This page summarises the information held within TEPCat for the transiting planetary system K2-25b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2016ApJ...818...46M | |
| Date of discovery paper | 2015 / 12 / 3 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 04 13 05.62 | h m s |
| Declination | +15 14 52.0 | d m s |
| Right ascension (decimal) | 63.27342 | degrees |
| Declination (decimal) | 15.24778 | degrees |
| V-band apparent magnitude | 15.88 | mag |
| K-band apparent magnitude | 10.44 | mag |
| Transit duration | 0.03128 ( 0.7507 ) | day hour |
| Transit depth | 1.2 | % |
| Time of mid-transit | 2458515.64214 ± 0.00010 | HJD or BJD |
| Orbital period | 3.4845650 ± 0.0000005 | days |
| Reference for orbital ephemeris | 2024MNRAS.530..167M |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3207 ± 58 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.15 ± 0.03 | dex |
| Stellar mass | 0.2634 ± 0.0077 | Msun |
| Stellar radius | 0.2932 ± 0.0093 | Rsun |
| Stellar logarithmic surface gravity | 4.944 ± 0.031 | c.g.s. |
| Stellar mean density | 10.4 ± 1.1 ( 14.7 ± 1.6 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.428 +0.050 −0.049 | |
| Orbital semimajor axis | 0.0287 ± 0.0012 | AU |
| Planetary mass | 0.077 +0.018 −0.016 ( 24.5 +5.7 −5.1 ) | Mjup Mearth |
| Planetary radius | 0.306 ± 0.011 ( 3.43 ± 0.12 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 11.0 ± 0.9 ( 14.6 ± 1.2 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 494 ± 11 | K |
| Reference of detailed study | 2020AJ....160..192S |
| Reference | λ (degrees) |
|---|---|
| Gaidos et al. (2020) | 1.7 + 5.8 - 3.7 |
| Stefansson et al. (2020) | 3 ± 16 |
Page generated on 2024/09/10 John Southworth (Keele University, UK)