This page summarises the information held within TEPCat for the transiting system K2-98b. 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 | 08 25 57.18 | h m s |
| Declination | +11 30 40.1 | d m s |
| Right ascension (decimal) | 126.48825 | degrees |
| Declination (decimal) | 11.51114 | degrees |
| V-band apparent magnitude | 11.99 | mag |
| K-band apparent magnitude | 10.87 | mag |
| Transit duration | 0.2419 ( 5.806 ) | day hour |
| Transit depth | 0.09 | % |
| Time of mid-transit | 2457145.98230 ± 0.00220 | HJD or BJD |
| Orbital period | 10.1364480 ± 0.0006090 | days |
| Reference for orbital ephemeris | 2018AJ....156..277L |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6172 ± 82 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.06 ± 0.05 | dex |
| Stellar mass | 1.200 ± 0.030 | Msun |
| Stellar radius | 1.570 ± 0.040 | Rsun |
| Stellar logarithmic surface gravity | 4.130 ± 0.020 | c.g.s. |
| Stellar mean density | 0.449 +0.132 −0.110 ( 0.63 +0.19 −0.16 ) | ρsun g cm-3 |
| Orbital eccentricity | ||
| Orbital semimajor axis | 0.09740 ± 0.00090 | AU |
| Planetary mass | Mjup Mearth | |
| Planetary radius | 0.464 ± 0.017 ( 5.20 ± 0.19 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | 1092 ± 21 | K |
| Reference of detailed study | 2018AJ....156..277L |
K2-98b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/08/27 John Southworth (Keele University, UK)