This page summarises the information held within TEPCat for the transiting planetary system HATS-18. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2016AJ....152..127P | |
| Date of discovery paper | 2016 / 6 / 6 | y / m / d |
| Right ascension | 11 35 49.92 | h m s |
| Declination | −29 09 21.6 | d m s |
| V-band apparent magnitude | 14.07 | mag |
| K-band apparent magnitude | 12.29 | mag |
| Transit duration | 0.07866 ( 1.8878 ) | day hour |
| Transit depth | 2.3 | % |
| Time of mid-transit | 2457089.90665 ± 0.00025 | HJD or BJD |
| Orbital period | 0.83784309 ± 0.00000028 | days |
| Reference for orbital ephemeris | arXiv:2002.02606 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5600 ± 120 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.280 ± 0.080 | dex |
| Stellar mass | 1.037 ± 0.047 | Msun |
| Stellar radius | 1.020 +0.057 −0.031 | Rsun |
| Stellar logarithmic surface gravity | 4.436 ± 0.034 | c.g.s. |
| Stellar mean density | 0.97 +0.09 −0.16 ( 1.37 +0.13 −0.23 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 +0.166 −0.0 | |
| Orbital semimajor axis | 0.01761 ± 0.00027 | AU |
| Planetary mass | 1.980 ± 0.077 ( 629 ± 24 ) | Mjup Mearth |
| Planetary radius | 1.337 +0.102 −0.049 ( 14.99 + 1.14 − 0.55 ) | Rjup Rearth |
| Planetary surface gravity | 27.2 +2.3 −3.7 3.43 +0.04 −0.06 | m/s2 log(cgs) |
| Planetary mean density | 0.77 +0.10 −0.15 ( 1.02 +0.13 −0.20 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 2060 ± 59 | K |
| Reference of detailed study | 2016AJ....152..127P |
HATS-18 does not have an entry in the catalogue of orbital obliquity measurements.
HATS-18 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.
Page generated on 2021/01/04 John Southworth (Keele University, UK)