This page summarises the information held within TEPCat for the transiting planetary system G 9-40. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | arXiv:1912.00291 | |
| Date of discovery paper | 2019 / 12 / 2 | y / m / d |
| Right ascension | 08 58 52.33 | h m s |
| Declination | +21 04 34.2 | d m s |
| V-band apparent magnitude | 13.82 | mag |
| K-band apparent magnitude | 9.19 | mag |
| Transit duration | 0.0557 ( 1.337 ) | day hour |
| Transit depth | 0.37 | % |
| Time of mid-transit | 2458497.77747 ± 0.00033 | HJD or BJD |
| Orbital period | 5.746007 ± 0.000006 | days |
| Reference for orbital ephemeris | arXiv:1912.00291 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3348 ± 32 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.04 +0.10 −0.11 | dex |
| Stellar mass | 0.290 ± 0.020 | Msun |
| Stellar radius | 0.3073 +0.0059 −0.0061 | Rsun |
| Stellar logarithmic surface gravity | 4.926 ± 0.027 | c.g.s. |
| Stellar mean density | 10.00 +0.70 −0.65 ( 14.11 + 0.99 − 0.92 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.0385 +0.0078 −0.0053 | AU |
| Planetary mass | 0.0 +0.037 −0.0 ( 0 +11 −0 ) | Mjup Mearth |
| Planetary radius | 0.1807 ± 0.0086 ( 2.025 ± 0.096 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | 456 +35 −40 | K |
| Reference of detailed study | arXiv:1912.00291 |
G 9-40 does not have an entry in the catalogue of orbital obliquity measurements.
G 9-40 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.
Page generated on 2021/01/04 John Southworth (Keele University, UK)