This page summarises the information held within TEPCat for the transiting planetary system K2-27b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2016ApJ...820...56V | |
| Date of discovery paper | 2016 / 2 / 8 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 11 26 03.64 | h m s |
| Declination | +01 13 50.7 | d m s |
| Right ascension (decimal) | 171.51517 | degrees |
| Declination (decimal) | 1.23075 | degrees |
| V-band apparent magnitude | 12.64 | mag |
| K-band apparent magnitude | 10.70 | mag |
| Transit duration | 0.13 ( 3.1 ) | day hour |
| Transit depth | 0.28 | % |
| Time of mid-transit | 2456812.8451 ± 0.0010 | HJD or BJD |
| Orbital period | 6.77145 ± 0.00013 | days |
| Reference for orbital ephemeris | 2016ApJ...820...56V |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5248 ± 60 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.13 ± 0.04 | dex |
| Stellar mass | 0.866 +0.029 −0.023 | Msun |
| Stellar radius | 0.885 ± 0.043 | Rsun |
| Stellar logarithmic surface gravity | 4.48 ± 0.05 | c.g.s. |
| Stellar mean density | 1.45 ± 0.27 ( 2.05 ± 0.38 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.251 ± 0.088 | |
| Orbital semimajor axis | 0.06702 ± 0.00071 | AU |
| Planetary mass | 0.097 ± 0.014 ( 30.8 ± 4.5 ) | Mjup Mearth |
| Planetary radius | 0.400 ± 0.021 ( 4.48 ± 0.24 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 1.41 ± 0.31 ( 1.87 ± 0.41 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 902 ± 28 | K |
| Reference of detailed study | 2017AJ....153..142P |
K2-27b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/11/11 John Southworth (Keele University, UK)