This page summarises the information held within TEPCat for the transiting planetary system K2-98. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2016AJ....152..193B | |
| Date of discovery paper | 2016 / 8 / 4 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 08 25 57.19 | h m s |
| Declination | +11 30 40.1 | d m s |
| Right ascension (decimal) | 126.48829 | degrees |
| Declination (decimal) | 11.51114 | degrees |
| V-band apparent magnitude | 12.17 | mag |
| K-band apparent magnitude | 10.87 | mag |
| Transit duration | 0.210 ( 5.04 ) | day hour |
| Transit depth | 0.11 | % |
| Time of mid-transit | 2457662.95321 ± 0.00076 | HJD or BJD |
| Orbital period | 10.1367349 ± 0.0000093 | days |
| Reference for orbital ephemeris | 2023AJ....165..155T |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6120 ± 80 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.2 ± 0.1 | dex |
| Stellar mass | 1.074 ± 0.042 | Msun |
| Stellar radius | 1.311 +0.083 −0.048 | Rsun |
| Stellar logarithmic surface gravity | 4.23 +0.03 −0.05 | c.g.s. |
| Stellar mean density | 0.47 +0.05 −0.09 ( 0.663 +0.071 −0.127 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.0943 +0.0061 −0.0052 | AU |
| Planetary mass | 0.101 ± 0.025 ( 32.1 ± 7.9 ) | Mjup Mearth |
| Planetary radius | 0.38 +0.03 −0.02 ( 4.26 +0.34 −0.22 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 1.62 +0.51 −0.45 ( 2.15 +0.68 −0.60 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1102 +26 −20 | K |
| Reference of detailed study | 2016AJ....152..193B |
K2-98 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/17 John Southworth (Keele University, UK)