This page summarises the information held within TEPCat for the transiting system Kepler-689b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2016ApJ...822...86M | |
| Date of discovery paper | 2016 / 5 / 10 | y / m / d |
| Data/telescope used for discovery | Kepler | |
| Right ascension | 19 38 50.55 | h m s |
| Declination | +39 31 18.2 | d m s |
| Right ascension (decimal) | 294.71062 | degrees |
| Declination (decimal) | 39.52172 | degrees |
| V-band apparent magnitude | 15.80 | mag |
| K-band apparent magnitude | 13.71 | mag |
| Transit duration | 0.2178 ( 5.227 ) | day hour |
| Transit depth | 0.10 | % |
| Time of mid-transit | 2455008.45862 ± 0.00400 | HJD or BJD |
| Orbital period | 22.3664647 ± 0.0000976 | days |
| Reference for orbital ephemeris | 2016ApJ...822...86M |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5518 +123 −163 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.01 +0.14 −0.18 | dex |
| Stellar mass | 0.910 +0.050 −0.040 | Msun |
| Stellar radius | 0.880 +0.100 −0.070 | Rsun |
| Stellar logarithmic surface gravity | 4.510 +0.050 −0.100 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | ||
| Orbital semimajor axis | AU | |
| Planetary mass | Mjup Mearth | |
| Planetary radius | 0.207 +0.034 −0.014 ( 2.32 +0.38 −0.16 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | 536 | K |
| Reference of detailed study | 2016ApJ...822...86M |
Kepler-689b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/08/27 John Southworth (Keele University, UK)