This page summarises the information held within TEPCat for the transiting planetary system TOI-421c. 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 | 0.1148 ( 2.755 ) | day hour |
| Transit depth | 0.3 | % |
| Time of mid-transit | 2459195.30741 ± 0.00018 | HJD or BJD |
| Orbital period | 16.067541 ± 0.000004 | 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 | 0.19 ± 0.04 | |
| Orbital semimajor axis | 0.1170 ± 0.0018 | AU |
| Planetary mass | 0.0444 ± 0.0044 ( 14.1 ± 1.4 ) | Mjup Mearth |
| Planetary radius | 0.454 ± 0.006 ( 5.089 ± 0.067 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 0.443 ± 0.050 ( 0.588 ± 0.066 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 635 ± 9 | K |
| Reference of detailed study | 2024A+A...686A.301K |
TOI-421c does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/04/12 John Southworth (Keele University, UK)