This page summarises the information held within TEPCat for the transiting planetary system L98-59b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2019AJ....158...32K | |
| Date of discovery paper | 2019 / 3 / 20 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 08 18 07.62 | h m s |
| Declination | −68 18 46.8 | d m s |
| Right ascension (decimal) | 124.53175 | degrees |
| Declination (decimal) | -68.31300 | degrees |
| V-band apparent magnitude | 11.69 | mag |
| K-band apparent magnitude | 7.10 | mag |
| Transit duration | 0.0421 ( 1.010 ) | day hour |
| Transit depth | 0.06 | % |
| Time of mid-transit | 2458366.1706 ± 0.0002 | HJD or BJD |
| Orbital period | 2.2531140 ± 0.0000004 | days |
| Reference for orbital ephemeris | arXiv:2507.09343 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3415 ± 60 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.46 ± 0.26 | dex |
| Stellar mass | 0.2923 ± 0.0067 | Msun |
| Stellar radius | 0.3155 ± 0.0062 | Rsun |
| Stellar logarithmic surface gravity | 4.91 ± 0.02 | c.g.s. |
| Stellar mean density | 9.21 +0.8 −0.6 ( 13.00 + 1.13 − 0.85 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.031 +0.017 −0.016 | |
| Orbital semimajor axis | 0.0223 ± 0.0007 | AU |
| Planetary mass | 0.0014 ± 0.0003 ( 0.445 ± 0.095 ) | Mjup Mearth |
| Planetary radius | 0.0747 ± 0.0017 ( 0.837 ± 0.019 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 3.2 +0.9 −0.8 ( 4.2 +1.2 −1.1 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 620 ± 13 | K |
| Reference of detailed study | arXiv:2507.09343 |
L98-59b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/08/27 John Southworth (Keele University, UK)