This page summarises the information held within TEPCat for the transiting brown dwarf system Kepler-39. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2011A+A...533A..83B | |
| Date of discovery paper | 2011 / 6 / 16 | y / m / d |
| Data/telescope used for discovery | Kepler | |
| Right ascension | 19 47 50.46 | h m s |
| Declination | +46 02 03.5 | d m s |
| Right ascension (decimal) | 296.96025 | degrees |
| Declination (decimal) | 46.03431 | degrees |
| V-band apparent magnitude | 14.33 | mag |
| K-band apparent magnitude | 12.92 | mag |
| Transit duration | 0.2483 ( 5.959 ) | day hour |
| Transit depth | 0.7 | % |
| Time of mid-transit | 2455042.60707 ± 0.00021 | HJD or BJD |
| Orbital period | 21.087212 ± 0.000030 | days |
| Reference for orbital ephemeris | 2015A+A...575A..85B |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6290 ± 120 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.04 ± 0.11 | dex |
| Stellar mass | 1.20 ± 0.09 | Msun |
| Stellar radius | 1.26 ± 0.03 | Rsun |
| Stellar logarithmic surface gravity | 4.34 ± 0.02 | c.g.s. |
| Stellar mean density | 0.65 ± 0.04 ( 0.917 ± 0.056 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.066 +0.036 −0.0 | |
| Orbital semimajor axis | 0.162 ± 0.003 | AU |
| Planetary mass | 19.0 ± 1.3 ( 60399 ± 4133 ) | Mjup Mearth |
| Planetary radius | 1.07 ± 0.03 ( 11.99 ± 0.34 ) | Rjup Rearth |
| Planetary surface gravity | 380 ± 26 4.58 ± 0.03 | m/s2 log(cgs) |
| Planetary mean density | 13.1 +1.2 −1.1 ( 17.4 + 1.6 − 1.5 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 853 ± 14 | K |
| Reference of detailed study | 2023MNRAS.519.5177C |
Kepler-39 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2024/09/10 John Southworth (Keele University, UK)