Planet K2-3 d
| Name | K2-3 d | ||
| Planet Status | Confirmed | ||
| Discovered in | 2015 | ||
| Mass | 0.00881 MJ |  |
|
| Mass*sin(i) | — | |
|
| Semi-Major Axis | 0.2086 (± 0.01) AU | |
+ |
| Orbital Period | 44.55646 (± 0.0001) day | |
+ |
| Eccentricity | 0.0 | |
|
| ω | — | |
|
| Tperi | — | ||
| Radius | 0.135 ( -0.021 +0.021 ) RJ | |
+ |
| Inclination | 89.788 ( -0.029 +0.033 ) deg | |
|
| Update | 2022-07-27 | ||
| Detection Method | Primary Transit | ||
| Mass Detection Method | Radial Velocity | ||
| Radius Detection Method | Primary Transit | ||
| Primary transit | 2456826.22346 (± 0.00056) JD | |
+ |
| Secondary transit | — | ||
| λ | — | ||
| Impact Parameter b | 0.3 ( -0.05 +0.04 ) | |
|
| Time Vr=0 | — | ||
| Velocity Semiamplitude K | 0.71 m/s | |
|
| Calculated temperature | 282.0 K | |
|
| Measured temperature | — | ||
| Hottest point longitude | — | ||
| Geometric albedo | — | ||
| Surface gravity log(g/gH) | — | ||
| Alternate Names | 2MASS J11292037-0127173 d, EPIC 201367065 d, EPIC 201367065.03, WISE J112920.45-012718.0 d |
Star
K2-3| Name | K2-3 | ||
| Distance | 45.0 ( -3.0 +3.0 ) pc | ||
| Spectral type | M0.0V | ||
| Apparent magnitude V | 12.17 | ||
| Mass | 0.6 ( -0.09 +0.09 ) MSun | ||
| Age | < 1.0 Gyr | |
|
| Effective temperature | 3896.0 ( -189.0 +189.0 ) K | ||
| Radius | 0.56 ( -0.07 +0.07 ) RSun | ||
| Metallicity [Fe/H] | -0.32 ( -0.13 +0.13 ) | ||
| Detected Disc | — | ||
| Magnetic Field | — | ||
| RA2000 | 11:29:20.4 | ||
| Dec2000 | -01:27:17 | ||
| Alternate Names | EPIC 201367065 , 2MASS J11292037-0127173, EPIC 201367065, WISE J112920.45-012718.0 | ||
| Planetary system | 3 planets |
Atmospheric parameters
Temperatures
| Data Source | Type | Result Value | Result Figure | Notes | Reference |
Molecules
| Molecule | Data Source | Type | Result Value | Result Figure | Notes | Reference |
| H2O | Measurements | Detected | 2022 - DIAMOND-LOWE H. | |||
Observability Predictor 
Remarks
14 Jan 2019: The mass could not really be measured since Kosiarek et al. (2018) give a negative value for the RV amplitude31 Dec 2018: Sinukoff et al. compute the equilibrium temperature assuming an albedo of 0.3.
Related publications
The K2-3 system revisited: testing photoevaporation and core-powered mass loss with three small planets spanning the radius valley
2022
DIAMOND-LOWE H., KREIDBERG L., HARMAN C., KEMPTON E., ROGERS L. et al.
Astron. J., 164, 172
paper arxiv
Bright Opportunities for Atmospheric Characterization of Small Planets: Masses and Radii of K2-3 b, c, and d and GJ3470 b from Radial Velocity Measurements and Spitzer Transits
2019
KOSIAREK M. R., CROSSFIELD I. J. M., HARDEGREE-ULLMAN K. K., LIVINGSTON J. H., BENNEKE B. et al.
The Astronomical Journal, 157, 97
ADS
Eyes on K2-3: A system of three likely sub-Neptunes characterized with HARPS-N and HARPS
2018
DAMASSO M., BONOMO A., ASTUDILLO-DEFRU N., BONFILS X., MALAVOLTA L. et al.
Astron. & Astrophys., 615, A69
arxiv
paper
Bright Opportunities for Atmospheric Characterization of Small Planets: Masses and Radii of K2-3 b, c, d and GJ3470 b from Radial Velocity Measurements and Spitzer Transits
2018
KOSIAREK M., CROSSFIELD I., HARDEGREE-ULLMAN K., LIVINGSTON J., BENNEKE B. et al.
Astron. J., accepted
arxiv
Obliquity and Eccentricity Constraints For Terrestrial Exoplanets
2017
KANE S. & TORRES S.
Astron. J., 154, 204
paper arxiv
Ground-based Transit Observation of the Habitable-zone super-Earth K2-3d
2016
FUKUI A., LIVINGSTON J., NARITA N., HIRANO T., ONITSUKA M. et al.
Astron. J., 152, 171
paper arxiv ADS
Eleven Multi-planet Systems from K2 Campaigns 1 & 2 and the Masses of Two Hot Super-Earths
2016
SINUKOFF E., HOWARD A., PETIGURA E., SCHLIEDER J., CROSSFIELD I. et al.
ApJ, 827, 78
arxiv
paper
ADS
Spitzer Observations of Exoplanets Discovered with The Kepler K2 Mission
2016
BEICHMAN Ch., LIVINGSTON J., WERNER M., GORJIAN V., KRICK J. et al.
ApJ, 822, 39
paper arxiv ADS
A nearby M star with three transiting super-Earths discovered by K2
2015
CROSSFIELD I., PETIGURA E., SCHLIECKER J., HOWARD A., FULTON B. te al.
ApJ, 803, 10
paper arxiv ADS
A HARPS view on K2-3
2015
ALMENARA J.-M., ASTUDILLO-DEFRU N., BONFILS X., FORVEILLE Th., SANTERNE A. et al.
Astron. & Astrophys., 581, L7
paper arxiv ADS
Stellar and Planetary Properties of K2 Campaign 1 Candidates and Validation of 17 Systems, Including a Planet Receiving Earth-like Insolation
2015
MONTET B., MORTON T., FOREMAN-MACKEY D., JOHNSON J., HOGG D. et 4 additional authors
ApJ, 809, 25
arxiv
paper
ADS
