Planet K2-263 b

Detailed information about planet K2-263 b and its parameters.

Planet parameters Publications Observability Predictor Exo3D

Planet

Name

K2-263 b

Planet Status

Confirmed

Discovered in

2018

Publication Status

—

Update

2026-08-18

Mass

0.0485 (\begin{matrix} + 0.0076 \\ - 0.0079 \end{matrix})

M_J 2 publications

Constraining Small Planet Compositions for Future Missions
K2-263 b: A 50-day period sub-Neptune with a mass measurement using HARPS-N

Mass*sin(i)

—

Semi-Major Axis

0.2573 (\begin{matrix} + 0.0029 \\ - 0.003 \end{matrix})

AU 2 publications

Constraining Small Planet Compositions for Future Missions
K2-263 b: A 50-day period sub-Neptune with a mass measurement using HARPS-N

Orbital Period

50.819172 (\begin{matrix} + 6.6e-05 \\ - 6.8e-05 \end{matrix})

day 2 publications

Constraining Small Planet Compositions for Future Missions
K2-263 b: A 50-day period sub-Neptune with a mass measurement using HARPS-N

Eccentricity

0.08 (\begin{matrix} + 0.089 \\ - 0.057 \end{matrix})

1 publication

Constraining Small Planet Compositions for Future Missions

Angular distance

—

ω

—

T_peri

—

Radius

0.2242 (\begin{matrix} + 0.0098 \\ - 0.00848 \end{matrix})

R_J 2 publications

Constraining Small Planet Compositions for Future Missions
K2-263 b: A 50-day period sub-Neptune with a mass measurement using HARPS-N

Inclination

89.271 (\begin{matrix} + 0.045 \\ - 0.035 \end{matrix})

deg 2 publications

Constraining Small Planet Compositions for Future Missions
K2-263 b: A 50-day period sub-Neptune with a mass measurement using HARPS-N

Detection Method

Primary Transit

Mass Meas. Method

Radial Velocity

Radius Meas. Method

Primary Transit

Primary transit

2458111.1274 (\pm 0.0012)

JD 1 publication

K2-263 b: A 50-day period sub-Neptune with a mass measurement using HARPS-N

Secondary transit

—

λ

—

Impact Parameter b

0.8315 (\begin{matrix} + 0.0587 \\ - 0.0945 \end{matrix})

2 publications

Constraining Small Planet Compositions for Future Missions
K2-263 b: A 50-day period sub-Neptune with a mass measurement using HARPS-N

Time V_r=0

—

Velocity Semiamplitude K

2.91 (\begin{matrix} + 0.45 \\ - 0.46 \end{matrix})

m/s 2 publications

Constraining Small Planet Compositions for Future Missions
K2-263 b: A 50-day period sub-Neptune with a mass measurement using HARPS-N

Calculated temperature

482.0 (\begin{matrix} + 7.0 \\ - 8.0 \end{matrix})

K 1 publication

Constraining Small Planet Compositions for Future Missions

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

EPIC 211682544 b

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

No remarks

No link

Star

Name

K2-263

Distance

163.23 (\begin{matrix} + 1.37 \\ - 1.37 \end{matrix})

Spectral type

G7V

Apparent magnitude V

11.6

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.88 (\pm 0.03)

M_Sun 2 publications

K2-263 b: A 50-day period sub-Neptune with a mass measurement using HARPS-N
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

7.0 (\pm 4.0)

Gyr 2 publications

K2-263 b: A 50-day period sub-Neptune with a mass measurement using HARPS-N
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

5368.0 (\pm 44.0)

K 2 publications

K2-263 b: A 50-day period sub-Neptune with a mass measurement using HARPS-N
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

0.85 (\pm 0.02)

R_Sun 2 publications

K2-263 b: A 50-day period sub-Neptune with a mass measurement using HARPS-N
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]

-0.08 (\pm 0.05)

2 publications

K2-263 b: A 50-day period sub-Neptune with a mass measurement using HARPS-N
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

08:38:43.8

Dec₂₀₀₀

+15:40:50.3

Alternate Names

TIC 21276520, EPIC 211682544, WISE J083843.73+154050.2, LAMOST J083843.77+154050.2, 2MASS J08384378+1540503

No remarks

No link

Simbad
Most recent references (ADS)

Planet K2-263 b

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 1 planet

Remarks No remark

Other web pages No page

More data 2 references

Planet K2-263 b

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 1 planet

Remarks No remark

Other web pages No page

More data 2 references

Related publications

Constraining Small Planet Compositions for Future Missions

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

K2-263 b: A 50-day period sub-Neptune with a mass measurement using HARPS-N