Confirmed Exoplanet Discovered 2014

Kepler-263 c

A sub-neptune orbiting the g-type yellow (sun-like) Kepler-263, located approximately 2,461.7 light-years from Earth.

Key parameters at a glance

  • A radius of 2.47 Earth radii
  • A mass of 6.66 Earth masses
  • Surface gravity around 1.09 g
  • An orbital period of 47.333 days
  • Semi-major axis 0.2420 AU
  • Equilibrium temperature 386 K (113 °C)
  • Distance from Earth 2,461.65 light-years
  • Earth Similarity Index 0.620
  • Travel time at Voyager 1 speed 43,411,242 years

1 sibling around Kepler-263

Kepler-263 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet Type Radius (R⊕) Mass (M⊕) Period (d) Eq. T (K) Year
Kepler-263 b Sub-Neptune 2.67 7.61 16.568 548 2014
Kepler-263 c this Sub-Neptune 2.47 6.66 47.333 386 2014

Kepler-263 c Planet Profile

Physical Specs

Radius
2.47 R⊕
Radius (Jupiter)
0.220 R♃
Mass
6.66 M⊕
Mass (Jupiter)
0.021 M♃
Density
2.43 g/cm³
Surface Gravity
1.09 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.620
HZ Position Inner
Controversial No

Discovery

Year 2014
Method Transit
Facility Kepler
Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1226of 1978

top 61.9%

This planet

2.47R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1101 b 2.47 R⊕ Kepler-269 b 2.47 R⊕ Kepler-198 c 2.47 R⊕
Metric Earth Kepler-263 c Jupiter
Radius (R⊕)1.002.4711.21
Mass (M⊕)1.006.66317.83
Density (g/cm³)5.512.431.33
Surface Gravity (g)1.001.092.53
Insolation (S⊕)1.005.990.037

Star Catalogue Identifiers

TIC

TIC 137637249

Gaia DR2

Gaia DR2 2051832634677771008

Gaia DR3

Gaia DR3 2051832634677771008

System

Kepler-263

Percentile among Sub-Neptune cohort

Radius 2.470 R⊕ · percentile 37 / cohort 1978
Mass 6.660 M⊕ · percentile 35 / cohort 1978
Orbital period 47.33 d · percentile 84 / cohort 1946
Distance 754.75 pc · percentile 62 / cohort 1975
ESI 0.620 · percentile 85 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period
47.333 days
Semi-major axis
0.2420 AU
Eccentricity
0.000
Inclination
89.80 °

Year Length

A year here lasts approximately 47.33 Earth days (13.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2420 AU.

Transit Fingerprint

Depth

0.098 %

Duration

3.069 h

Impact parameter b

0.060

Rp / R★

0.028129

Transit midpoint (BJD)

2,454,984.4095

Photometric dip

Transit produces a flux drop of 976 ppm lasting ≈ 3.07 h.

Extended Orbital Architecture

Planet / star radius ratio

0.028129

Semi-major axis / stellar radius

129.800

Impact parameter (b)

0.060

Transit mid-time (BJD)

2,454,984.4095

Angular separation (arcsec)

0.32100

Eq. Temperature

386K

(113 °C)

Insolation (S⊕)

5.99

Earth = 1.00

Earth Similarity (ESI)

0.620

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.

Discovery Paper

Primary reference

Rowe et al. 2014

Instrument

Kepler CCD Array

Publication

2014-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2014 at Kepler (12 shown).

Kepler-186 e · Super-Earth Kepler-395 c · Super-Earth Kepler-220 e · Super-Earth Kepler-249 d · Super-Earth Kepler-296 f · Super-Earth Kepler-367 c · Rocky Terrestrial Kepler-296 e · Super-Earth Kepler-155 c · Sub-Neptune Kepler-138 d · Super-Earth Kepler-333 c · Rocky Terrestrial Kepler-331 d · Super-Earth Kepler-267 d · Sub-Neptune

Host System: Kepler-263

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,265 K — cooler than the Sun (5,778 K)

Estimated Age

2.24 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.785 R☉

Stellar Mass

0.793 M☉

Metallicity [Fe/H]

-0.03

Extended Stellar Properties

Surface gravity (log g)

4.576 dex

Stellar density

2.000 g/cm³

Metallicity ratio

[M/H]

Distance
754.75 parsec
Light-years 2,461.65 ly
V-band magnitude
15.44 mag
Voyager-speed travel 43,411,242 yr

Multi-band Host Photometry — 17 bands

9.218.017.96U15.87B15.44V15.42Gaia15.39Kepler14.83TESS16.09Sloan g15.37Sloan r15.10Sloan i14.98Sloan z13.99J13.53H13.55K13.33W113.39W212.51W39.19W4

Astrometric Data

Parallax

1.297 mas

Total Proper Motion

5.791 mas/yr

PM Right Ascension

5.77 mas/yr

PM Declination

0.45 mas/yr

Galactic Cartesian (pc)

x = 0.303 · y = -0.732 · z = 0.610

Equatorial (J2000)

RA 292.46980° · Dec 37.56779°

Galactic ℓ, b

70.584° · 9.221°

Ecliptic λ, β

305.193° · 58.293°

HTM-20 index

1236448017

Similar Worlds

Kepler-1101 b

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.47 R⊕ · 2,421.6 ly

Kepler-269 b

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.47 R⊕ · 7,362.4 ly

Kepler-198 c

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.47 R⊕ · 1,615.6 ly

Kepler-310 d

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.47 R⊕ · 1,964.3 ly

Kepler-203 c

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.47 R⊕ · 2,293.9 ly

Kepler-1307 b

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.47 R⊕ · 3,309.2 ly

Explore Related Categories

Sub-Neptune Planets Transit Discoveries Kepler Mission G-type yellow (Sun-like) Hosts