Planet K2-290 b
| Name | K2-290 b | ||
| Planet Status | Confirmed | ||
| Discovered in | 2019 | ||
| Mass | 0.0343 MJ |  |
|
| Mass*sin(i) | — | ||
| Semi-Major Axis | 0.0923 (± 0.0066) AU | |
|
| Orbital Period | 9.21165 (± 0.00034) day | |
|
| Eccentricity | 0.0 | |
|
| ω | 90.0 deg | |
|
| Tperi | — | ||
| Radius | 0.273 ( -0.014 +0.014 ) RJ | |
|
| Inclination | 88.14 ( -0.5 +0.6 ) deg | |
|
| Update | 2021-02-16 | ||
| Detection Method | Primary Transit | ||
| Mass Detection Method | Radial Velocity | ||
| Radius Detection Method | Primary Transit | ||
| Primary transit | 2457994.7725 (± 0.0016) JD | |
|
| Secondary transit | — | ||
| λ | 173.0 ( -53.0 +45.0 ) deg | ||
| Impact Parameter b | 0.438 (± 0.023) | |
|
| Time Vr=0 | — | ||
| Velocity Semiamplitude K | 3.3 m/s | |
|
| Calculated temperature | 1230.0 (± 38.0) K | |
|
| Measured temperature | — | ||
| Hottest point longitude | — | ||
| Geometric albedo | — | ||
| Surface gravity log(g/gH) | — | ||
| Alternate Names | EPIC 249624646 b, 2MASS J15392585-2011557 b, TYC 6193-663-1 b, WISE J153925.88-201155.9 b |
Star
K2-290| Name | K2-290 | ||
| Distance | 274.99 ( -3.8 +3.8 ) pc | ||
| Spectral type | |||
| Apparent magnitude V | 10.0 | ||
| Mass | 1.19 ( -0.08 +0.07 ) MSun | ||
| Age | 4.0 ( -0.8 +1.6 ) Gyr | |
|
| Effective temperature | 6302.0 (± 120.0) K | |
|
| Radius | 1.51 ( -0.07 +0.07 ) RSun | ||
| Metallicity [Fe/H] | -0.06 (± 0.1) | |
|
| Detected Disc | — | ||
| Magnetic Field | — | ||
| RA2000 | 15:39:25.9 | ||
| Dec2000 | -20:11:56 | ||
| Alternate Names | EPIC 249624646, 2MASS J15392585-2011557, TYC 6193-663-1, WISE J153925.88-201155.9 | ||
| Planetary system | 2 planets |
Related publications
The chaotic history of the retrograde multi-planet system in K2-290A driven by distant stars
2022
BEST S. & PETROVICH C.
ApJ Lett., 925, L5
paper arxiv
A backward-spinning star with two coplanar planets
2021
HJORTH M., ALBRECHT S., HIRANO T., WINN J., DAWSON R. et al.
PNAS, accepted
arxiv
K2-290: a warm Jupiter and a mini-Neptune in a triple-star system
2019
HJORTH M., JUSTESEN A., HIRANO T., ALBRECHT S., GANDOLFI D. et al.
MNRAS, 484, 3522
paper arxiv
