Planet EPIC 228754001 b

Name EPIC 228754001 b
Planet Status Confirmed
Discovered in 2017
Mass 0.495 ( -0.0063 +0.0068 ) MJ
Mass*sin(i)
Semi-Major Axis 0.0916 (± 0.0006) AU
Orbital Period 9.1708 (± 0.0025) JD
Eccentricity 0.29 (± 0.049)
ω 82.6 ( -4.2 +4.0 ) deg
Tperi
Radius 1.089 (± 0.006) RJ
Inclination 77.56 ( -0.51 +0.47 ) deg
Update 2017-07-12
Detection Method Primary Transit
Mass Detection Method
Radius Detection Method
Molecules
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K 43.0 (± 1.8) m/s
Calculated temperature 1586.0 (± 10.0) K
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

EPIC 228754001
Name EPIC 228754001
Distance
Spectral type K
Apparent magnitude V
Mass 1.19 (± 0.04) MSun
Age 5.5 (± 0.4) Gyr
Effective temperature 4878.0 (± 70.0) K
Radius 4.11 (± 0.05) RSun
Metallicity [Fe/H] -0.11 (± 0.05)
Detected Disc
Magnetic Field
RA2000 12:08:39.9
Dec2000 -08:44:50
Alternate Names
Planetary system 1 planet

More data

Observability Predictor

Remarks

The planet, orbiting a giant star, is independently discovered by Grunblatt et al. (2017) et Jones et al. (2017).

Related publications

Seeing double with K2: Testing re-inflation with two remarkably similar planets around red giant branch stars
2017 GRUNBLATT S., HUBER D., GAIDOS E., LOPEZ E., HOWARD A. et al.
ApJ, submitted
arxiv  

A hot Saturn on an eccentric orbit around the giant star EPIC228754001
2017 JONES M., BRAHM R., ESPINOZA N., JORDAN A., ROJAS F. et al.
Astron. & Astrophys., submitted
arxiv