This page summarises the information held within TEPCat for the transiting planetary system XO-3. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2008ApJ...677..657J | |
| Date of discovery paper | 2007 / 10 / 17 | y / m / d |
| Data/telescope used for discovery | XO | |
| Right ascension | 04 21 52.70 | h m s |
| Declination | +57 49 01.9 | d m s |
| Right ascension (decimal) | 65.46958 | degrees |
| Declination (decimal) | 57.81719 | degrees |
| V-band apparent magnitude | 9.91 | mag |
| K-band apparent magnitude | 8.79 | mag |
| Transit duration | 0.12351 ( 2.9642 ) | day hour |
| Transit depth | 0.84 | % |
| Time of mid-transit | 2457417.98760 ± 0.00011 | HJD or BJD |
| Orbital period | 3.19152308 ± 0.000000015 | days |
| Reference for orbital ephemeris | arXiv:2412.04438 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6770 ± 100 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.12 +0.09 −0.11 | dex |
| Stellar mass | 1.409 +0.066 −0.070 | Msun |
| Stellar radius | 1.508 +0.029 −0.030 | Rsun |
| Stellar logarithmic surface gravity | 4.230 ± 0.014 | c.g.s. |
| Stellar mean density | 0.410 +0.017 −0.016 ( 0.579 +0.024 −0.023 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.2790 +0.0024 −0.0023 | |
| Orbital semimajor axis | 0.04770 +0.00073 −0.00080 | AU |
| Planetary mass | 13.03 +0.41 −0.43 ( 41421 +1303 −1367 ) | Mjup Mearth |
| Planetary radius | 1.307 +0.027 −0.028 ( 14.65 + 0.30 − 0.31 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | K | |
| Reference of detailed study | arXiv:2412.04438 |
| Reference | λ (degrees) |
|---|---|
| Hébrard et al. (2008) | 70 ± 15 |
| Winn et al. (2009) | 37.3 ± 3.7 |
| Hirano et al. (2011) | 37.3 ± 3.0 |
| Rusznak et al. (2011) | 41.8 + 2.1 - 2.0 |
Page generated on 2025/03/17 John Southworth (Keele University, UK)