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 |
| Data/telescope used for discovery | HATS | |
| Right ascension | 11 35 49.92 | h m s |
| Declination | −29 09 21.6 | d m s |
| Right ascension (decimal) | 173.95800 | degrees |
| Declination (decimal) | -29.15600 | degrees |
| 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 | 2458626.511225 ± 0.000071 | HJD or BJD |
| Orbital period | 0.83784382 ± 0.00000011 | days |
| Reference for orbital ephemeris | 2022MNRAS.515.3212S |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5600 ± 120 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.280 ± 0.080 | dex |
| Stellar mass | 1.048 ± 0.063 | Msun |
| Stellar radius | 0.999 ± 0.023 | Rsun |
| Stellar logarithmic surface gravity | 4.460 ± 0.016 | c.g.s. |
| Stellar mean density | 1.052 ± 0.043 ( 1.484 ± 0.061 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 +0.166 −0.0 | |
| Orbital semimajor axis | 0.01768 ± 0.00035 | AU |
| Planetary mass | 1.990 ± 0.093 ( 632 ± 29 ) | Mjup Mearth |
| Planetary radius | 1.304 ± 0.036 ( 14.62 ± 0.40 ) | Rjup Rearth |
| Planetary surface gravity | 29.0 ± 1.3 3.46 ± 0.02 | m/s2 log(cgs) |
| Planetary mean density | 0.840 ± 0.053 ( 1.114 ± 0.070 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 2029 ± 45 | K |
| Reference of detailed study | 2022MNRAS.515.3212S |
HATS-18 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2024/09/10 John Southworth (Keele University, UK)