This page summarises the information held within TEPCat for the transiting system K2-278b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2018AJ....156..277L | |
| Date of discovery paper | 2018 / 10 / 10 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 13 33 12.42 | h m s |
| Declination | −14 30 14.6 | d m s |
| Right ascension (decimal) | 203.30175 | degrees |
| Declination (decimal) | -14.50406 | degrees |
| V-band apparent magnitude | 13.06 | mag |
| K-band apparent magnitude | 11.70 | mag |
| Transit duration | 0.1629 ( 3.910 ) | day hour |
| Transit depth | 0.03 | % |
| Time of mid-transit | 2457219.82294 ± 0.01119 | HJD or BJD |
| Orbital period | 3.3349660 ± 0.0007010 | days |
| Reference for orbital ephemeris | 2018AJ....156..277L |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6747 ± 383 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | 0.00 ± 0.17 | dex |
| Stellar mass | 1.400 ± 0.080 | Msun |
| Stellar radius | 1.610 ± 0.050 | Rsun |
| Stellar logarithmic surface gravity | 4.170 ± 0.040 | c.g.s. |
| Stellar mean density | 0.293 +0.204 −0.139 ( 0.41 +0.29 −0.20 ) | ρsun g cm-3 |
| Orbital eccentricity | ||
| Orbital semimajor axis | 0.04880 ± 0.00090 | AU |
| Planetary mass | Mjup Mearth | |
| Planetary radius | 0.266 ± 0.021 ( 2.98 ± 0.24 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | 1711 ± 101 | K |
| Reference of detailed study | 2018AJ....156..277L |
K2-278b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/08/27 John Southworth (Keele University, UK)