This page summarises the information held within TEPCat for the transiting planetary system HAT-P-23. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2011ApJ...742..116B | |
| Date of discovery paper | 2010 / 8 / 23 | y / m / d |
| Data/telescope used for discovery | HAT | |
| Right ascension | 20 24 29.99 | h m s |
| Declination | +16 45 43.7 | d m s |
| Right ascension (decimal) | 306.12496 | degrees |
| Declination (decimal) | 16.76214 | degrees |
| V-band apparent magnitude | 12.43 | mag |
| K-band apparent magnitude | 10.79 | mag |
| Transit duration | 0.0908 ( 2.179 ) | day hour |
| Transit depth | 1.8 | % |
| Time of mid-transit | 2456539.390497 ± 0.000040 | HJD or BJD |
| Orbital period | 1.21288643 ± 0.00000004 | days |
| Reference for orbital ephemeris | 2022MNRAS.512.2062B |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5885 ± 72 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.13 ± 0.08 | dex |
| Stellar mass | 1.104 ± 0.047 | Msun |
| Stellar radius | 1.089 ± 0.028 | Rsun |
| Stellar logarithmic surface gravity | 4.407 ± 0.018 | c.g.s. |
| Stellar mean density | 0.855 ± 0.051 ( 1.206 ± 0.072 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.02302 ± 0.00032 | AU |
| Planetary mass | 2.07 ± 0.12 ( 658 ± 38 ) | Mjup Mearth |
| Planetary radius | 1.224 ± 0.037 ( 13.72 ± 0.41 ) | Rjup Rearth |
| Planetary surface gravity | 34.3 ± 2.4 3.54 ± 0.03 | m/s2 log(cgs) |
| Planetary mean density | 1.057 ± 0.097 ( 1.40 ± 0.13 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1951 ± 30 | K |
| Reference of detailed study | 2015A+A...577A..54C |
| Reference | λ (degrees) |
|---|---|
| Moutou et al. (2011) | 15 ± 22 |
Page generated on 2024/11/22 John Southworth (Keele University, UK)