This page summarises the information held within TEPCat for the transiting planetary system HD 191939b. 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 | 0.1225 ( 2.940 ) | day hour |
Transit depth | 0.11 | % |
Time of mid-transit | 2459443.54236 ± 0.00024 | HJD or BJD |
Orbital period | 8.8803256 ± 0.0000047 | 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 | 0.031 +0.010 −0.011 | |
Orbital semimajor axis | 0.0804 +0.0025 −0.0023 | AU |
Planetary mass | 0.0315 ± 0.0022 ( 10.01 ± 0.70 ) | Mjup Mearth |
Planetary radius | 0.3042 ± 0.0067 ( 3.410 ± 0.075 ) | Rjup Rearth |
Planetary surface gravity | 8.4 +0.8 −0.7 2.92 +0.04 −0.04 | m/s2 log(cgs) |
Planetary mean density | 1.06 +0.11 −0.10 ( 1.41 +0.15 −0.13 ) | ρjup g cm-3 |
Planetary equilibrium temperature | 880 ± 20 | K |
Reference of detailed study | 2023A+A...669A..40O |
Reference | λ (degrees) |
---|---|
Lubin et al. (2024) | 3.7 ± 5.0 |
Page generated on 2025/02/12 John Southworth (Keele University, UK)