This page summarises the information held within TEPCat for the transiting planetary system HD 39688. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | arXiv:2402.07893 | |
| Date of discovery paper | 2024 / 2 / 13 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 05 53 30.88 | h m s |
| Declination | −16 15 54.0 | d m s |
| Right ascension (decimal) | 88.37867 | degrees |
| Declination (decimal) | -16.26500 | degrees |
| V-band apparent magnitude | 7.37 | mag |
| K-band apparent magnitude | 6.01 | mag |
| Transit duration | 0.17 ( 4.1 ) | day hour |
| Transit depth | 0.05 | % |
| Time of mid-transit | 2458469.5660 ± 0.0016 | HJD or BJD |
| Orbital period | 6.86588 ± 0.00001 | days |
| Reference for orbital ephemeris | arXiv:2402.07893 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6224 ± 90 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.17 ± 0.08 | dex |
| Stellar mass | 1.28 ± 0.03 | Msun |
| Stellar radius | 1.49 +0.05 −0.03 | Rsun |
| Stellar logarithmic surface gravity | 4.23 ± 0.01 | c.g.s. |
| Stellar mean density | 0.91 ± 0.02 ( 1.284 ± 0.028 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.10 ± 0.07 | |
| Orbital semimajor axis | AU | |
| Planetary mass | 0.049 ± 0.007 ( 15.6 ± 2.2 ) | Mjup Mearth |
| Planetary radius | 0.240 ± 0.009 ( 2.69 ± 0.10 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 3.33 ± 0.60 ( 4.42 ± 0.80 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | K | |
| Reference of detailed study | arXiv:2402.07893 |
HD 39688 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/02/12 John Southworth (Keele University, UK)