Planet GJ 9827 c

Name GJ 9827 c
Planet Status Confirmed
Discovered in 2017
Mass 0.0079 ( -0.0069 +0.0069 ) MJ +
Mass*sin(i)
Semi-Major Axis 0.044 (± 0.003) AU +
Orbital Period 3.648086 (± 0.0001) day +
Eccentricity
ω
Tperi
Radius 0.115 ( -0.015 +0.015 ) RJ +
Inclination 87.8 (± 0.57) deg
Update 2017-11-07
Detection Method Primary Transit
Mass Detection Method Radial Velocity
Radius Detection Method Primary Transit
Primary transit 2457738.55194 (± 0.0014) JD
Secondary transit
λ
Impact Parameter b 0.53 (± 0.14)
Time Vr=0
Velocity Semiamplitude K 1.36 (± 1.2) m/s
Calculated temperature 721.9 (± 25.0) K
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

GJ 9827
Name GJ 9827
Distance 30.3 (± 1.6) pc
Spectral type K6V
Apparent magnitude V 10.4
Mass 0.659 (± 0.06) MSun
Age
Effective temperature 4255.0 (± 110.0) K
Radius 0.651 (± 0.065) RSun
Metallicity [Fe/H] -0.28 (± 0.12)
Detected Disc
Magnetic Field
RA2000 23:28:25.0
Dec2000 -01:17:11
Alternate Names
Planetary system
3 planets

More data


Related publications

Mass determination of the 1:3:5 near-resonant planets transiting GJ 9827 (K2-135)
2018 PRIETO-ARRANZ J., PALLE E., GANDOLI D., BARRAGAN O., GUENTHER E. et al.
Astron. & Astrophys., submitted
arxiv  

Masses and radii for the three super-Earths orbiting GJ 9827, and implications for the composition of small exoplanets
2018 RICE K., MALAVOLTA L., MAYO A., MORTIER A., BUCHHAVE L. et al
MNRAS, in press
paper  arxiv  

Three Small Super-Earths Transiting the nearby star GJ 9827
2017 NIRAULA P., REDFIELD S., DAI F., BARRAGAN O., GANDOLFI D. et al.
Astron. J., 154, 266
paper  arxiv  

A System of Three Super Earths Transiting the Late K-Dwarf GJ 9827 at Thirty Parsecs
2017 RODRIGUEZ J., VANDERBURG A., EASTMAN J., CROSSFIELD I., CIARDI D. et al.
ApJ, 155, 72
paper  arxiv  

Magellan II/PFS Radial Velocity Mass Measurements of the Super-Earth Planets Transiting GJ 9827 at 30 Parsecs
2017 TESKE J., WANG Sh., WOLFGANG A., SHECTMAN S., BUTLER P. et al.
Astron. J., 155, 148
paper  arxiv