This page summarises the information held within TEPCat for the transiting planetary system K2-99. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2017MNRAS.464.2708S | |
| Date of discovery paper | 2016 / 9 / 2 | y / m / d |
| Right ascension | 13 55 05.70 | h m s |
| Declination | −05 26 32.9 | d m s |
| V-band apparent magnitude | 11.15 | mag |
| K-band apparent magnitude | 9.72 | mag |
| Transit duration | 0.49 ( 11.8 ) | day hour |
| Transit depth | 0.2 | % |
| Time of mid-transit | 2457233.823 ± 0.003 | HJD or BJD |
| Orbital period | 18.249 ± 0.001 | days |
| Reference for orbital ephemeris | 2017MNRAS.464.2708S |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5990 ± 40 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.20 ± 0.05 | dex |
| Stellar mass | 1.60 +0.14 −0.10 | Msun |
| Stellar radius | 3.1 ± 0.1 | Rsun |
| Stellar logarithmic surface gravity | 3.67 ± 0.04 | c.g.s. |
| Stellar mean density | 0.055 ± 0.002 ( 0.0776 ± 0.0028 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.19 ± 0.04 | |
| Orbital semimajor axis | 0.159 ± 0.006 | AU |
| Planetary mass | 0.97 ± 0.09 ( 308 ± 28 ) | Mjup Mearth |
| Planetary radius | 1.29 ± 0.05 ( 14.46 ± 0.56 ) | Rjup Rearth |
| Planetary surface gravity | 15.8 +4.1 −3.3 3.2 +0.1 −0.1 | m/s2 log(cgs) |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | K | |
| Reference of detailed study | 2017MNRAS.464.2708S |
K2-99 does not have an entry in the catalogue of orbital obliquity measurements.
K2-99 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.
Page generated on 2021/01/04 John Southworth (Keele University, UK)