Planet K2-38 c

Detailed information about planet K2-38 c and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

K2-38 c

Planet Status

Confirmed

Discovered in

2016

Update

2021-02-05

Mass

0.03115 (\begin{matrix} + 0.01447 \\ - 0.01447 \end{matrix})

M_J 1 publication

Eleven Multiplanet Systems from K2 Campaigns 1 and 2 and the Masses of Two Hot Super-Earths

Mass*sin(i)

—

Semi-Major Axis

0.0964 (\begin{matrix} + 0.0016 \\ - 0.0016 \end{matrix})

AU 1 publication

Eleven Multiplanet Systems from K2 Campaigns 1 and 2 and the Masses of Two Hot Super-Earths

Orbital Period

10.56103 (\pm 0.0009)

day 1 publication

Eleven Multi-planet Systems from K2 Campaigns 1 & 2 and the Masses of Two Hot Super-Earths

Eccentricity

0.161 (\begin{matrix} + 0.096 \\ - 0.078 \end{matrix})

Characterization of the K2-38 planetary system. Unraveling one of the densest planets known to date

ω

152.0 (\begin{matrix} + 54.0 \\ - 33.0 \end{matrix})

deg 1 publication

Characterization of the K2-38 planetary system. Unraveling one of the densest planets known to date

T_peri

—

Radius

0.216 (\begin{matrix} + 0.026 \\ - 0.026 \end{matrix})

R_J 1 publication

Eleven Multiplanet Systems from K2 Campaigns 1 and 2 and the Masses of Two Hot Super-Earths

Inclination

88.61 (\begin{matrix} + 1.0 \\ - 1.67 \end{matrix})

deg 1 publication

Eleven Multiplanet Systems from K2 Campaigns 1 and 2 and the Masses of Two Hot Super-Earths

Detection Method

Primary Transit

Mass Meas. Method

Radial Velocity

Radius Meas. Method

Primary Transit

Primary transit

2456900.4752 (\pm 0.0033)

JD 1 publication

Eleven Multi-planet Systems from K2 Campaigns 1 & 2 and the Masses of Two Hot Super-Earths

Secondary transit

—

λ

—

Impact Parameter b

0.64 (\begin{matrix} + 0.23 \\ - 0.41 \end{matrix})

Eleven Multiplanet Systems from K2 Campaigns 1 and 2 and the Masses of Two Hot Super-Earths

Time V_r=0

—

Velocity Semiamplitude K

2.8 (\begin{matrix} + 1.3 \\ - 1.3 \end{matrix})

m/s 1 publication

Eleven Multiplanet Systems from K2 Campaigns 1 and 2 and the Masses of Two Hot Super-Earths

Calculated temperature

858.0 (\begin{matrix} + 37.0 \\ - 37.0 \end{matrix})

K 1 publication

Eleven Multiplanet Systems from K2 Campaigns 1 and 2 and the Masses of Two Hot Super-Earths

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

2MASS J16000805-2311213 c, EPIC 204221263 c, EPIC 204221263.01, TYC 6779-268-1 c, WISE J160008.01-231121.6 c

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

Sinukoff et al (2016) : A linear RV trend also suggests a third companion at larger orbital distances.

No link

Star

Name

K2-38

Distance

192.69 (\begin{matrix} + 2.669 \\ - 2.597 \end{matrix})

pc 1 publication

The Revised TESS Input Catalog and Candidate Target List

Spectral type

G3V

Apparent magnitude V

11.4

Mass

1.054 (\begin{matrix} + 0.07 \\ - 0.063 \end{matrix})

M_Sun 1 publication

Cold Jupiters and improved masses in 38 Kepler and K2 small-planet systems from 3661 high-precision HARPS-N radial velocities. No excess of cold Jupiters in small-planet systems

Age

6.1 (\begin{matrix} + 3.4 \\ - 3.1 \end{matrix})

Gyr 1 publication

Cold Jupiters and improved masses in 38 Kepler and K2 small-planet systems from 3661 high-precision HARPS-N radial velocities. No excess of cold Jupiters in small-planet systems

Effective temperature

5705.0 (\pm 66.0)

K 1 publication

Cold Jupiters and improved masses in 38 Kepler and K2 small-planet systems from 3661 high-precision HARPS-N radial velocities. No excess of cold Jupiters in small-planet systems

Radius

1.141 (\pm 0.12)

R_Sun 1 publication

Cold Jupiters and improved masses in 38 Kepler and K2 small-planet systems from 3661 high-precision HARPS-N radial velocities. No excess of cold Jupiters in small-planet systems

Metallicity [Fe/H]

0.235 (\pm 0.07)

Cold Jupiters and improved masses in 38 Kepler and K2 small-planet systems from 3661 high-precision HARPS-N radial velocities. No excess of cold Jupiters in small-planet systems

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

16:00:08.1

Dec₂₀₀₀

-23:11:21.4

Alternate Names

WISE J160008.01-231121.6, EPIC 204221263, TYC 6779-268-1, 2MASS J16000805-2311213

A very faint candidate companion, either a brown dwarf or a very low-mass late M dwarf star, is detected 1.378 ±000.014 arcseconds away (265 AUs for d = 192.7 pc). The probability that the candidate companion is a background object is 1.59% but more observations are required to confirm physical association (Bohn et al. 2020).

No link

Simbad
Most recent references (ADS)