Planet G 9-40 b
| Name | G 9-40 b | ||
| Planet Status | Confirmed | ||
| Discovered in | 2019 | ||
| Mass | 0.016 ( -0.006 +0.012 ) MJ |  |
|
| Mass*sin(i) | — | ||
| Semi-Major Axis | 0.0385 ( -0.0053 +0.0078 ) AU | |
|
| Orbital Period | 5.746007 (± 6e-06) day | |
|
| Eccentricity | 0.0 | |
|
| ω | — | ||
| Tperi | — | ||
| Radius | 0.18066 (± 0.00865) RJ | |
|
| Inclination | 88.57 ( -0.47 +0.63 ) deg | ||
| Update | 2019-12-03 | ||
| Detection Method | Primary Transit | ||
| Mass Detection Method | Theoretical | ||
| Radius Detection Method | Primary Transit | ||
| Primary transit | 2458497.77747 (± 0.00033) JD | |
|
| Secondary transit | 2458500.65047 (± 0.00033) JD | |
|
| λ | — | ||
| Impact Parameter b | 0.672 ( -0.22 +0.1 ) | |
|
| Time Vr=0 | — | ||
| Velocity Semiamplitude K | — | ||
| Calculated temperature | 319.0 (± 28.0) K | |
|
| Measured temperature | — | ||
| Hottest point longitude | — | ||
| Geometric albedo | — | ||
| Surface gravity log(g/gH) | — | ||
| Alternate Names | — |
Star
G 9-40| Name | G 9-40 | ||
| Distance | 27.928 (± 0.045) pc | |
|
| Spectral type | M2.5 | ||
| Apparent magnitude V | 13.8 | ||
| Mass | 0.29 (± 0.02) MSun | |
|
| Age | 9.9 ( -4.1 +2.6 ) Gyr | |
|
| Effective temperature | 3348.0 (± 32.0) K | |
|
| Radius | 0.3073 ( -0.0061 +0.0059 ) RSun | |
|
| Metallicity [Fe/H] | -0.078 (± 0.13) | |
|
| Detected Disc | — | ||
| Magnetic Field | — | ||
| RA2000 | 08:58:52.0 | ||
| Dec2000 | +21:04:34 | ||
| Alternate Names | |||
| Planetary system | 1 planet |
Related publications
A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder
2020
STEFANSSON G., CAñAS C., WISNIEWSKI J., ROBERTSON P., MAHADEVAN S. et al.
Astron. J., 159, 100
paper arxiv
