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 | 0.0454 ( 1.090 ) | day hour |
| Transit depth | 0.08 | % |
| Time of mid-transit | 2459189.7341 ± 0.0005 | HJD or BJD |
| Orbital period | 5.197576 ± 0.000005 | days |
| Reference for orbital ephemeris | 2024A+A...686A.301K |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5291 ± 64 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.044 ± 0.04 | dex |
| Stellar mass | 0.833 +0.048 −0.054 | Msun |
| Stellar radius | 0.866 ± 0.006 | Rsun |
| Stellar logarithmic surface gravity | 4.48 ± 0.03 | c.g.s. |
| Stellar mean density | 1.29 ± 0.15 ( 1.82 ± 0.21 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.13 ± 0.05 | |
| Orbital semimajor axis | 0.0554 ± 0.0010 | AU |
| Planetary mass | 0.0211 ± 0.0019 ( 6.71 ± 0.60 ) | Mjup Mearth |
| Planetary radius | 0.236 ± 0.007 ( 2.645 ± 0.078 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 1.53 ± 0.21 ( 2.03 ± 0.28 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 922 ± 14 | K |
| Reference of detailed study | 2024A+A...686A.301K |
TOI-421b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2024/09/10 John Southworth (Keele University, UK)