This page summarises the information held within TEPCat for the transiting planetary system Qatar-9. 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 42 59.54 | h m s |
| Declination | +60 57 50.8 | d m s |
| Right ascension (decimal) | 160.74808 | degrees |
| Declination (decimal) | 60.96411 | degrees |
| V-band apparent magnitude | 14.13 | mag |
| K-band apparent magnitude | 11.10 | mag |
| Transit duration | 0.0778 ( 1.867 ) | day hour |
| Transit depth | 2.8 | % |
| Time of mid-transit | 2458227.75643 ± 0.00027 | HJD or BJD |
| Orbital period | 1.540731 ± 0.000038 | days |
| Reference for orbital ephemeris | 2019AJ....157..224A |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 4309 ± 31 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.252 ± 0.076 | dex |
| Stellar mass | 0.719 ± 0.024 | Msun |
| Stellar radius | 0.696 ± 0.008 | Rsun |
| Stellar logarithmic surface gravity | 4.610 ± 0.010 | c.g.s. |
| Stellar mean density | 2.137 ± 0.061 ( 3.015 ± 0.086 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.0234 ± 0.0003 | AU |
| Planetary mass | 1.19 ± 0.16 ( 378 ± 50 ) | Mjup Mearth |
| Planetary radius | 1.009 ± 0.014 ( 11.31 ± 0.16 ) | Rjup Rearth |
| Planetary surface gravity | 28.8 +4.5 −3.9 3.46 +0.06 −0.06 | m/s2 log(cgs) |
| Planetary mean density | 1.08 ± 0.15 ( 1.43 ± 0.20 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1134 ± 9 | K |
| Reference of detailed study | 2019AJ....157..224A |
Qatar-9 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2024/09/10 John Southworth (Keele University, UK)