This page summarises the information held within TEPCat for the transiting planetary system Qatar-8. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2019AJ....157..224A | |
| Date of discovery paper | 2019 / 3 / 25 | y / m / d |
| Data/telescope used for discovery | Qatar | |
| Right ascension | 10 29 38.96 | h m s |
| Declination | +70 31 37.5 | d m s |
| Right ascension (decimal) | 157.41233 | degrees |
| Declination (decimal) | 70.52708 | degrees |
| V-band apparent magnitude | 11.53 | mag |
| K-band apparent magnitude | 9.94 | mag |
| Transit duration | 0.1678 ( 4.027 ) | day hour |
| Transit depth | 1.1 | % |
| Time of mid-transit | 2458210.8392 ± 0.0010 | HJD or BJD |
| Orbital period | 3.7146428 ± 0.00000060 | days |
| Reference for orbital ephemeris | 2020AcA....70..181M |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5738 ± 51 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.025 ± 0.071 | dex |
| Stellar mass | 1.029 ± 0.051 | Msun |
| Stellar radius | 1.315 ± 0.020 | Rsun |
| Stellar logarithmic surface gravity | 4.214 ± 0.016 | c.g.s. |
| Stellar mean density | 0.454 ± 0.017 ( 0.641 ± 0.024 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.0474 ± 0.0008 | AU |
| Planetary mass | 0.371 ± 0.062 ( 117 ± 19 ) | Mjup Mearth |
| Planetary radius | 1.285 ± 0.022 ( 14.40 ± 0.25 ) | Rjup Rearth |
| Planetary surface gravity | 5.6 +1.1 −0.9 2.75 +0.08 −0.08 | m/s2 log(cgs) |
| Planetary mean density | 0.163 ± 0.028 ( 0.216 ± 0.037 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1457 ± 14 | K |
| Reference of detailed study | 2019AJ....157..224A |
Qatar-8 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2024/09/10 John Southworth (Keele University, UK)