This page summarises the information held within TEPCat for the transiting planetary system WASP-81. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2017MNRAS.467.1714T | |
| Date of discovery paper | 2016 / 12 / 14 | y / m / d |
| Data/telescope used for discovery | WASP | |
| Right ascension | 20 16 49.89 | h m s |
| Declination | +03 17 38.7 | d m s |
| Right ascension (decimal) | 304.20788 | degrees |
| Declination (decimal) | 3.29408 | degrees |
| V-band apparent magnitude | 12.29 | mag |
| K-band apparent magnitude | 10.89 | mag |
| Transit duration | 0.14501 ( 3.4802 ) | day hour |
| Transit depth | 1.4 | % |
| Time of mid-transit | 2456195.57462 ± 0.00020 | HJD or BJD |
| Orbital period | 2.7164762 ± 0.0000023 | days |
| Reference for orbital ephemeris | 2017MNRAS.467.1714T |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5890 ± 120 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.36 ± 0.14 | dex |
| Stellar mass | 1.080 +0.059 −0.058 | Msun |
| Stellar radius | 1.283 +0.040 −0.037 | Rsun |
| Stellar logarithmic surface gravity | 4.258 +0.022 −0.027 | c.g.s. |
| Stellar mean density | 0.513 +0.030 −0.037 ( 0.724 +0.042 −0.052 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 +0.066 −0.0 | |
| Orbital semimajor axis | 0.03908 +0.00070 −0.00072 | AU |
| Planetary mass | 0.729 +0.036 −0.035 ( 231 +11 −11 ) | Mjup Mearth |
| Planetary radius | 1.429 +0.051 −0.046 ( 16.02 + 0.57 − 0.52 ) | Rjup Rearth |
| Planetary surface gravity | 9.27 +0.59 −0.62 2.97 +0.03 −0.03 | m/s2 log(cgs) |
| Planetary mean density | 0.250 ± 0.023 ( 0.332 ± 0.031 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1623 +38 −37 | K |
| Reference of detailed study | 2017MNRAS.467.1714T |
WASP-81 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/17 John Southworth (Keele University, UK)