This page summarises the information held within TEPCat for the transiting planetary system HD 191939c. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2020AJ....160..113B | |
| Date of discovery paper | 2020 / 2 / 11 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 20 08 06.15 | h m s |
| Declination | +66 51 01.1 | d m s |
| Right ascension (decimal) | 302.02562 | degrees |
| Declination (decimal) | 66.85031 | degrees |
| V-band apparent magnitude | 8.97 | mag |
| K-band apparent magnitude | 7.18 | mag |
| Transit duration | 0.1734 ( 4.162 ) | day hour |
| Transit depth | 0.10 | % |
| Time of mid-transit | 2459440.5491 ± 0.0009 | HJD or BJD |
| Orbital period | 28.579743 ± 0.000045 | days |
| Reference for orbital ephemeris | 2023A+A...669A..40O |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5427 ± 50 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.16 ± 0.08 | dex |
| Stellar mass | 0.92 ± 0.06 | Msun |
| Stellar radius | 0.945 ± 0.021 | Rsun |
| Stellar logarithmic surface gravity | 4.40 ± 0.10 | c.g.s. |
| Stellar mean density | 1.16 +0.62 −0.28 ( 1.64 +0.87 −0.40 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.034 +0.034 −0.013 | |
| Orbital semimajor axis | 0.1752 +0.0055 −0.0050 | AU |
| Planetary mass | 0.0252 ± 0.0031 ( 8.01 ± 0.99 ) | Mjup Mearth |
| Planetary radius | 0.2850 ± 0.0067 ( 3.195 ± 0.075 ) | Rjup Rearth |
| Planetary surface gravity | 7.7 +1.1 −1.0 2.89 +0.06 −0.06 | m/s2 log(cgs) |
| Planetary mean density | 1.02 ± 0.15 ( 1.35 ± 0.20 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 600 ± 13 | K |
| Reference of detailed study | 2023A+A...669A..40O |
HD 191939c does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/12 John Southworth (Keele University, UK)