This page summarises the information held within TEPCat for the transiting system K2-17b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2015ApJ...809...25M | |
| Date of discovery paper | 2015 / 3 / 27 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 11 53 19.15 | h m s |
| Declination | +06 24 44.1 | d m s |
| Right ascension (decimal) | 178.32979 | degrees |
| Declination (decimal) | 6.41225 | degrees |
| V-band apparent magnitude | 13.52 | mag |
| K-band apparent magnitude | 10.30 | mag |
| Transit duration | 0.0 ( 0. ) | day hour |
| Transit depth | 0.10 | % |
| Time of mid-transit | 2456817.94140 ± 0.00350 | HJD or BJD |
| Orbital period | 17.97149 ± 0.00164 | days |
| Reference for orbital ephemeris | 2015ApJ...809...25M |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 4320 +56 −47 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | 0.15 +0.09 −0.22 | dex |
| Stellar mass | 0.71 +0.02 −0.05 | Msun |
| Stellar radius | 0.66 +0.02 −0.03 | Rsun |
| Stellar logarithmic surface gravity | c.g.s. | |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.1190 ± 0.0020 | AU |
| Planetary mass | Mjup Mearth | |
| Planetary radius | 0.199 ± 0.018 ( 2.23 ± 0.20 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | 487 ± 10 | K |
| Reference of detailed study | 2015ApJ...809...25M |
K2-17b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2026/01/29 John Southworth (Keele University, UK)