This page summarises the information held within TEPCat for the transiting planetary system HD 189733. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2005A+A...444L..15B | |
| Date of discovery paper | 2005 / 9 / 29 | y / m / d |
| Data/telescope used for discovery | other | |
| Right ascension | 20 00 43.71 | h m s |
| Declination | +22 42 39.1 | d m s |
| Right ascension (decimal) | 300.18213 | degrees |
| Declination (decimal) | 22.71086 | degrees |
| V-band apparent magnitude | 7.68 | mag |
| K-band apparent magnitude | 5.54 | mag |
| Transit duration | 0.07529 ( 1.8070 ) | day hour |
| Transit depth | 2.6 | % |
| Time of mid-transit | 2459446.498519 ± 0.000013 | HJD or BJD |
| Orbital period | 2.218575198 ± 0.000000071 | days |
| Reference for orbital ephemeris | 2023A+A...672A..24K |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 4969 ± 43 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.03 ± 0.05 | dex |
| Stellar mass | 0.783 ± 0.041 | Msun |
| Stellar radius | 0.784 ± 0.007 | Rsun |
| Stellar logarithmic surface gravity | 4.51 ± 0.03 | c.g.s. |
| Stellar mean density | 1.625 ± 0.094 ( 2.29 ± 0.13 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0041 +0.0025 −0.0020 | |
| Orbital semimajor axis | 0.03142 ± 0.00052 | AU |
| Planetary mass | 1.150 ± 0.039 ( 365 ± 12 ) | Mjup Mearth |
| Planetary radius | 1.151 ± 0.038 ( 12.90 ± 0.43 ) | Rjup Rearth |
| Planetary surface gravity | 21.5 ± 1.2 3.33 ± 0.02 | m/s2 log(cgs) |
| Planetary mean density | 0.75 ± 0.07 ( 0.995 ± 0.093 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1191 ± 20 | K |
| Reference of detailed study | 2023A+A...672A..24K |
| Reference | λ (degrees) |
|---|---|
| Winn et al. (2006) | −1.4 ± 1.1 |
| Triaud et al. (2009) | 0.85 + 0.28 - 0.32 |
| Collier Cameron et al. (2010) | −0.50 ± 0.30 |
| Dumusque (2014) | −999 ± -999 |
| Cegla et al. (2016) | −0.4 ± 0.2 |
| Casasayas-Barris et al. (2017) | −0.31 + 0.18 - 0.17 |
| Cristo et al. (2023) | −1.00 + 0.22 - 0.23 |
Page generated on 2024/11/22 John Southworth (Keele University, UK)