This page summarises the information held within TEPCat for the transiting planetary system WASP-23. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2011A+A...531A..24T | |
| Date of discovery paper | 2011 / 3 / 15 | y / m / d |
| Data/telescope used for discovery | WASP | |
| Right ascension | 06 44 30.59 | h m s |
| Declination | −42 45 42.5 | d m s |
| Right ascension (decimal) | 101.12746 | degrees |
| Declination (decimal) | -42.76181 | degrees |
| V-band apparent magnitude | 12.68 | mag |
| K-band apparent magnitude | 10.45 | mag |
| Transit duration | 0.0998 ( 2.395 ) | day hour |
| Transit depth | 1.7 | % |
| Time of mid-transit | 2455320.12418 ± 0.00027 | HJD or BJD |
| Orbital period | 2.94442718 ± 0.00000022 | days |
| Reference for orbital ephemeris | arXiv:2312.03319 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5046 ± 99 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.05 ± 0.06 | dex |
| Stellar mass | 0.842 +0.051 −0.049 | Msun |
| Stellar radius | 0.819 +0.033 −0.028 | Rsun |
| Stellar logarithmic surface gravity | 4.531 +0.025 −0.029 | c.g.s. |
| Stellar mean density | 1.497 +0.033 −0.031 ( 2.112 +0.047 −0.044 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.03798 ± 0.00075 | AU |
| Planetary mass | 0.917 +0.040 −0.039 ( 291 +12 −12 ) | Mjup Mearth |
| Planetary radius | 1.067 +0.045 −0.038 ( 11.96 + 0.50 − 0.43 ) | Rjup Rearth |
| Planetary surface gravity | 19.7 +1.3 −1.4 3.29 +0.03 −0.03 | m/s2 log(cgs) |
| Planetary mean density | 0.691 +0.072 −0.077 ( 0.917 +0.096 −0.102 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1152 +28 −26 | K |
| Reference of detailed study | 2013A+A...553A..26N |
| Reference | λ (degrees) |
|---|---|
| Triaud et al. (2011) | prograde |
Page generated on 2025/03/17 John Southworth (Keele University, UK)