This page summarises the information held within TEPCat for the transiting planetary system TOI-421b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2020AJ....160..114C | |
| Date of discovery paper | 2020 / 4 / 22 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 05 27 24.83 | h m s |
| Declination | −14 16 37.1 | d m s |
| Right ascension (decimal) | 81.85346 | degrees |
| Declination (decimal) | -14.27697 | degrees |
| V-band apparent magnitude | 9.93 | mag |
| K-band apparent magnitude | 8.07 | mag |
| Transit duration | 0.113 ( 2.71 ) | day hour |
| Transit depth | 0.3 | % |
| Time of mid-transit | 2458440.13169 ± 0.00069 | HJD or BJD |
| Orbital period | 16.06815 ± 0.00035 | days |
| Reference for orbital ephemeris | 2020AJ....160..114C |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5325 +78 −58 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.02 ± 0.05 | dex |
| Stellar mass | 0.852 +0.029 −0.021 | Msun |
| Stellar radius | 0.871 ± 0.012 | Rsun |
| Stellar logarithmic surface gravity | 4.486 +0.025 −0.018 | c.g.s. |
| Stellar mean density | 1.296 +0.068 −0.071 ( 1.829 +0.096 −0.100 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.171 +0.087 −0.086 | |
| Orbital semimajor axis | 0.1182 +0.0026 −0.0027 | AU |
| Planetary mass | 0.0511 +0.0035 −0.0034 ( 16.2 +1.1 −1.1 ) | Mjup Mearth |
| Planetary radius | 0.461 ± 0.012 ( 5.17 ± 0.13 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 0.486 +0.052 −0.047 ( 0.645 +0.069 −0.062 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 697 ± 12 | K |
| Reference of detailed study | 2020AJ....160..114C |
TOI-421b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2023/09/01 John Southworth (Keele University, UK)