This page summarises the information held within TEPCat for the transiting planetary system Kepler-89d. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2012ApJ...759L..36H | |
| Date of discovery paper | 2012 / 9 / 20 | y / m / d |
| Data/telescope used for discovery | Kepler | |
| Right ascension | 19 49 19.93 | h m s |
| Declination | +41 53 28.0 | d m s |
| Right ascension (decimal) | 297.33304 | degrees |
| Declination (decimal) | 41.89111 | degrees |
| V-band apparent magnitude | 12.33 | mag |
| K-band apparent magnitude | 10.93 | mag |
| Transit duration | 0.278 ( 6.67 ) | day hour |
| Transit depth | 0.55 | % |
| Time of mid-transit | 2454965.74130 ± 0.00012 | HJD or BJD |
| Orbital period | 22.3429824 ± 0.0000030 | days |
| Reference for orbital ephemeris | 2021MNRAS.503.4092B |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6182 ± 82 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.02 ± 0.02 | dex |
| Stellar mass | 1.277 ± 0.050 | Msun |
| Stellar radius | 1.52 ± 0.14 | Rsun |
| Stellar logarithmic surface gravity | 4.181 ± 0.066 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.022 +0.038 −0.033 | |
| Orbital semimajor axis | 0.1684 ± 0.0022 | AU |
| Planetary mass | 0.333 ± 0.035 ( 105 ± 11 ) | Mjup Mearth |
| Planetary radius | 1.005 ± 0.095 ( 11.3 ± 1.1 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 0.274 ± 0.076 ( 0.36 ± 0.10 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 806 | K |
| Reference of detailed study | 2013ApJ...768...14W |
| Reference | λ (degrees) |
|---|---|
| Hirano et al. (2012) | −6 + 13 - 11 |
| Albrecht et al. (2013) | −11 ± 11 |
Page generated on 2025/11/11 John Southworth (Keele University, UK)