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 |
0.0 deg |
|
|
| Tperi |
— |
|
|
| Radius |
0.181 ( -0.009 +0.009 ) RJ |
|
|
| Inclination |
88.57 ( -0.47 +0.63 ) deg |
|
|
| Update |
2021-02-05 |
|
|
| 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 |
456.0 ( -40.0 +35.0 ) K |
|
|
| Measured temperature |
— |
|
|
| Hottest point longitude |
— |
|
|
| Geometric albedo |
— |
|
|
| Surface gravity log(g/gH) |
— |
|
|
| Alternate Names |
2MASS J08585232+2104344 b, EPIC 212048748 b, EPIC 212048748.01, K2-313 b, LSPM J0858+2104 b, TIC 203214081 b, WISE J085852.46+210430.8 b |
|
|
Star
| Name |
G 9-40 |
|
|
| Distance |
27.93 ( -0.04 +0.04 ) pc |
|
|
| Spectral type |
M2.5 V |
|
|
| 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 |
0.31 ( -0.01 +0.01 ) RSun |
|
|
| Metallicity [Fe/H] |
0.04 ( -0.11 +0.1 ) |
|
|
| Detected Disc |
— |
|
|
| Magnetic Field |
— |
|
|
| RA2000 |
08:58:52.3 |
|
|
| Dec2000 |
+21:04:34 |
|
|
| Alternate Names |
2MASS J08585232+2104344, EPIC 212048748, K2-313, LSPM J0858+2104, TIC 203214081, WISE J085852.46+210430.8 |
|
|
| 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
