Planet K2-291 b
| Name |
K2-291 b |
|
|
| Planet Status |
Confirmed |
|
|
| Discovered in |
2019 |
|
|
| Mass |
0.02042 ( -0.00365 +0.00365 ) MJ |
 |
|
| Mass*sin(i) |
— |
|
|
| Semi-Major Axis |
0.03261 (± 0.00044) AU |
|
|
| Orbital Period |
2.225177 ( -6.8e-05 +6.6e-05 ) day |
|
|
| Eccentricity |
0.0 |
|
|
| ω |
0.0 deg |
|
|
| Tperi |
— |
|
|
| Radius |
0.142 ( -0.006 +0.008 ) RJ |
|
|
| Inclination |
85.26 ( -0.2 +0.23 ) deg |
|
|
| Update |
2021-02-05 |
|
|
| Detection Method |
Primary Transit |
|
|
| Mass Detection Method |
Radial Velocity |
|
|
| Radius Detection Method |
Primary Transit |
|
|
| Primary transit |
2457830.06163 (± 0.001) JD |
|
|
| Secondary transit |
— |
|
|
| λ |
— |
|
|
| Impact Parameter b |
0.646 ( -0.026 +0.021 ) |
|
|
| Time Vr=0 |
— |
|
|
| Velocity Semiamplitude K |
3.33 (± 0.59) m/s |
|
|
| Calculated temperature |
— |
|
|
| Measured temperature |
— |
|
|
| Hottest point longitude |
— |
|
|
| Geometric albedo |
— |
|
|
| Surface gravity log(g/gH) |
— |
|
|
| Alternate Names |
EPIC 247418783 b, 2MASS J05054699+2132552 b, HD 285181 b, TYC 1294-1233-1 b, WISE J050547.01+213254.0 b |
|
|
Star
| Name |
K2-291 |
|
|
| Distance |
90.29 ( -0.49 +0.49 ) pc |
|
|
| Spectral type |
|
|
|
| Apparent magnitude V |
10.0 |
|
|
| Mass |
0.93 ( -0.04 +0.04 ) MSun |
|
|
| Age |
3.72 ( -2.0 +3.7 ) Gyr |
|
|
| Effective temperature |
5520.0 (± 60.0) K |
|
|
| Radius |
0.9 ( -0.03 +0.04 ) RSun |
|
|
| Metallicity [Fe/H] |
0.08 (± 0.04) |
|
|
| Detected Disc |
— |
|
|
| Magnetic Field |
— |
|
|
| RA2000 |
05:05:47.0 |
|
|
| Dec2000 |
+21:32:55 |
|
|
| Alternate Names |
EPIC 247418783, 2MASS J05054699+2132552, HD 285181, TYC 1294-1233-1, WISE J050547.01+213254.0 |
|
|
| Planetary system |
1 planet
|
|
Related publications
K2-291 b: A rocky super-Earth in a 2.2 day orbit
2019
KOSIAREK M., BLUNT S., LOPEZ-MORALES M., CROSSFIELD I., SINUKOFF E. et al.
Astron. J., 157, 116
paper arxiv
