Key parameters at a glance

A radius of 2.83 Earth radii
A mass of 8.40 Earth masses
Surface gravity around 1.05 g
An orbital period of 140.101 days
Semi-major axis 0.5660 AU
Equilibrium temperature 511 K (238 °C)
Distance from Earth 3,072.95 light-years
Earth Similarity Index 0.464
Travel time at Voyager 1 speed 54,191,537 years

1 sibling around Kepler-264

Kepler-264 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-264 b	Sub-Neptune	3.33	11.10	40.806	772	2014
Kepler-264 c this	Sub-Neptune	2.83	8.40	140.101	511	2014

Kepler-264 c Planet Profile

Physical Specs

Radius

2.83 R⊕

Radius (Jupiter)

0.252 R♃

Mass

8.40 M⊕

Mass (Jupiter)

0.026 M♃

Density

2.04 g/cm³

Surface Gravity

1.05 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.464

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

#703of 1978

top 35.5%

This planet

2.83R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

HD 3167 e 2.83 R⊕ GJ 3634 b 2.83 R⊕ Kepler-1099 b 2.83 R⊕

Metric	Earth	Kepler-264 c	Jupiter
Radius (R⊕)	1.00	2.83	11.21
Mass (M⊕)	1.00	8.40	317.83
Density (g/cm³)	5.51	2.04	1.33
Surface Gravity (g)	1.00	1.05	2.53
Insolation (S⊕)	1.00	15.35	0.037

Star Catalogue Identifiers

TIC

TIC 137347078

Gaia DR2

Gaia DR2 2051738798233021824

Gaia DR3

Gaia DR3 2051738798233021824

System

Kepler-264

Percentile among Sub-Neptune cohort

Radius 2.830 R⊕ · percentile 64 / cohort 1978

Mass 8.400 M⊕ · percentile 58 / cohort 1978

Orbital period 140.10 d · percentile 96 / cohort 1946

Distance 942.17 pc · percentile 75 / cohort 1975

ESI 0.464 · percentile 65 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

140.101 days

Semi-major axis

0.5660 AU

Eccentricity

0.000

Inclination

89.98 °

Year Length

A year here lasts approximately 140.10 Earth days (38.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.5660 AU.

Transit Fingerprint

Depth

0.027 %

Duration

17.933 h

Impact parameter b

0.440

Rp / R★

0.014948

Transit midpoint (BJD)

2,455,049.2208

Photometric dip

Transit produces a flux drop of 267 ppm lasting ≈ 17.93 h.

Extended Orbital Architecture

Planet / star radius ratio

0.014948

Semi-major axis / stellar radius

58.700

Impact parameter (b)

0.440

Transit mid-time (BJD)

2,455,049.2208

Angular separation (arcsec)

0.60100

Eq. Temperature

511K

(238 °C)

Insolation (S⊕)

15.35

Earth = 1.00

Earth Similarity (ESI)

0.464

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-264

Spectral Class

F-type yellow-white

Effective Temperature

6,158 K — hotter than the Sun (5,778 K)

Estimated Age

2.45 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.550 R☉

Stellar Mass

1.426 M☉

Metallicity [Fe/H]

0.05

Extended Stellar Properties

Surface gravity (log g)

4.147 dex

Stellar density

0.200 g/cm³

Metallicity ratio

[M/H]

Distance

942.17 parsec

Light-years 3,072.95 ly

V-band magnitude

13.15 mag

Voyager-speed travel 54,191,537 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

1.033 mas

Total Proper Motion

9.474 mas/yr

PM Right Ascension

2.84 mas/yr

PM Declination

-9.04 mas/yr

Galactic Cartesian (pc)

x = 0.298 · y = -0.737 · z = 0.607

Equatorial (J2000)

RA 292.04463° · Dec 37.37619°

Galactic ℓ, b

70.255° · 9.434°

Ecliptic λ, β

304.475° · 58.206°

HTM-20 index

1214308436