This page summarises the information held within TEPCat for the transiting planetary system Qatar-7. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2019AJ....157...74A | |
| Date of discovery paper | 2018 / 12 / 14 | y / m / d |
| Data/telescope used for discovery | Qatar | |
| Right ascension | 23 54 03.63 | h m s |
| Declination | +37 01 18.6 | d m s |
| Right ascension (decimal) | 358.51513 | degrees |
| Declination (decimal) | 37.02183 | degrees |
| V-band apparent magnitude | 13.03 | mag |
| K-band apparent magnitude | 11.56 | mag |
| Transit duration | 0.1491 ( 3.578 ) | day hour |
| Transit depth | 1.2 | % |
| Time of mid-transit | 2458043.32075 ± 0.00016 | HJD or BJD |
| Orbital period | 2.032070 ± 0.0000017 | days |
| Reference for orbital ephemeris | 2019AJ....157...74A |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6387 ± 38 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.276 ± 0.071 | dex |
| Stellar mass | 1.409 ± 0.026 | Msun |
| Stellar radius | 1.564 ± 0.021 | Rsun |
| Stellar logarithmic surface gravity | 4.196 ± 0.029 | c.g.s. |
| Stellar mean density | 0.369 ± 0.011 ( 0.521 ± 0.016 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.0352 ± 0.0002 | AU |
| Planetary mass | 1.88 ± 0.25 ( 597 ± 79 ) | Mjup Mearth |
| Planetary radius | 1.70 ± 0.03 ( 19.06 ± 0.34 ) | Rjup Rearth |
| Planetary surface gravity | 16.7 +2.7 −2.4 3.22 +0.07 −0.07 | m/s2 log(cgs) |
| Planetary mean density | 0.378 ± 0.054 ( 0.501 ± 0.072 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 2053 ± 15 | K |
| Reference of detailed study | 2019AJ....157...74A |
| Reference | λ (degrees) |
|---|---|
| Zak et al. (2025) | −9 ± 11 |
Page generated on 2026/01/29 John Southworth (Keele University, UK)