This page summarises the information held within TEPCat for the transiting planetary system Qatar-1. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2011MNRAS.417..709A | |
| Date of discovery paper | 2010 / 12 / 14 | y / m / d |
| Data/telescope used for discovery | Qatar | |
| Right ascension | 20 13 31.62 | h m s |
| Declination | +65 09 43.5 | d m s |
| Right ascension (decimal) | 303.38175 | degrees |
| Declination (decimal) | 65.16208 | degrees |
| V-band apparent magnitude | 12.84 | mag |
| K-band apparent magnitude | 10.41 | mag |
| Transit duration | 0.06921 ( 1.6610 ) | day hour |
| Transit depth | 2.3 | % |
| Time of mid-transit | 2455647.633175 ± 0.000050 | HJD or BJD |
| Orbital period | 1.42002433 ± 0.00000003 | days |
| Reference for orbital ephemeris | 2022AJ....164..198M |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 4820 ± 85 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.16 ± 0.09 | dex |
| Stellar mass | 0.838 +0.043 −0.041 | Msun |
| Stellar radius | 0.803 ± 0.016 | Rsun |
| Stellar logarithmic surface gravity | 4.552 +0.012 −0.011 | c.g.s. |
| Stellar mean density | 1.620 +0.052 −0.050 ( 2.286 +0.073 −0.071 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 +0.031 −0.0 | |
| Orbital semimajor axis | 0.02332 +0.00040 −0.00038 | AU |
| Planetary mass | 1.294 +0.052 −0.049 ( 411 +16 −15 ) | Mjup Mearth |
| Planetary radius | 1.143 +0.026 −0.025 ( 12.81 + 0.29 − 0.28 ) | Rjup Rearth |
| Planetary surface gravity | 24.55 +0.86 −0.83 3.39 +0.01 −0.01 | m/s2 log(cgs) |
| Planetary mean density | 0.811 +0.043 −0.040 ( 1.076 +0.057 −0.053 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1418 +28 −27 | K |
| Reference of detailed study | 2017AJ....153...78C |
| Reference | λ (degrees) |
|---|---|
| Covino et al. (2013) | −8.4 ± 7.1 |
Page generated on 2025/03/24 John Southworth (Keele University, UK)