Key parameters at a glance

A radius of 1.18 Earth radii
A mass of 1.76 Earth masses
Surface gravity around 1.26 g
An orbital period of 0.969 days
Semi-major axis 0.0184 AU
Equilibrium temperature 1,677 K (1404 °C)
Distance from Earth 2,615.75 light-years
Earth Similarity Index 0.174
Travel time at Voyager 1 speed 46,128,719 years

Kepler-1264 b Planet Profile

Physical Specs

Radius

1.18 R⊕

Radius (Jupiter)

0.105 R♃

Mass

1.76 M⊕

Mass (Jupiter)

0.006 M♃

Density

5.89 g/cm³

Surface Gravity

1.26 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.174

HZ Position Inner

Controversial No

Discovery

Year 2016

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#117of 570

top 20.4%

This planet

1.18R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1430 b 1.18 R⊕ Kepler-1512 b 1.18 R⊕ Kepler-332 d 1.18 R⊕

Metric	Earth	Kepler-1264 b	Jupiter
Radius (R⊕)	1.00	1.18	11.21
Mass (M⊕)	1.00	1.76	317.83
Density (g/cm³)	5.51	5.89	1.33
Surface Gravity (g)	1.00	1.26	2.53
Insolation (S⊕)	1.00	2,367.80	0.037

Star Catalogue Identifiers

TIC

TIC 159177065

Gaia DR2

Gaia DR2 2127065652653876992

Gaia DR3

Gaia DR3 2127065652653876992

System

Kepler-1264

Percentile among Rocky Terrestrial cohort

Radius 1.180 R⊕ · percentile 77 / cohort 570

Mass 1.760 M⊕ · percentile 71 / cohort 570

Orbital period 0.97 d · percentile 11 / cohort 567

Distance 801.99 pc · percentile 85 / cohort 566

ESI 0.174 · percentile 9 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

0.969 days

Semi-major axis

0.0184 AU

Eccentricity

0.000

Inclination

65.17 °

Year Length

A year here lasts roughly 23.2 hours long on a nearly circular orbit at a mean orbital distance of 0.0184 AU.

Transit Fingerprint

Depth

0.013 %

Duration

1.290 h

Impact parameter b

0.322

Rp / R★

0.010509

Transit midpoint (BJD)

2,454,964.5114

Photometric dip

Transit produces a flux drop of 128 ppm lasting ≈ 1.29 h.

Extended Orbital Architecture

Planet / star radius ratio

0.010509

Semi-major axis / stellar radius

2.240

Impact parameter (b)

0.322

Transit mid-time (BJD)

2,454,964.5114

Angular separation (arcsec)

0.02290

Eq. Temperature

1,677K

(1404 °C)

Insolation (S⊕)

2,367.80

Earth = 1.00

Earth Similarity (ESI)

0.174

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

Discovery Paper

Primary reference

Morton et al. 2016

Instrument

Kepler CCD Array

Publication

2016-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2016 at Kepler (12 shown).

Kepler-1512 b · Rocky Terrestrial Kepler-1410 b · Super-Earth Kepler-560 b · Super-Earth Kepler-1389 b · Super-Earth Kepler-1450 b · Super-Earth Kepler-1544 b · Super-Earth Kepler-1459 b · Super-Earth Kepler-1638 b · Super-Earth Kepler-737 b · Super-Earth Kepler-1185 b · Super-Earth Kepler-1178 b · Rocky Terrestrial Kepler-1040 b · Sub-Neptune

Host System: Kepler-1264

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,791 K — hotter than the Sun (5,778 K)

Estimated Age

4.17 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.980 R☉

Stellar Mass

0.990 M☉

Metallicity [Fe/H]

-0.02

Extended Stellar Properties

Surface gravity (log g)

4.450 dex

Stellar density

1.010 g/cm³

Metallicity ratio

[Fe/H]

Distance

801.99 parsec

Light-years 2,615.75 ly

V-band magnitude

14.63 mag

Voyager-speed travel 46,128,719 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.219 mas

Total Proper Motion

2.458 mas/yr

PM Right Ascension

0.54 mas/yr

PM Declination

-2.40 mas/yr

Galactic Cartesian (pc)

x = 0.240 · y = -0.662 · z = 0.710

Equatorial (J2000)

RA 289.88441° · Dec 45.21151°

Galactic ℓ, b

76.749° · 14.296°

Ecliptic λ, β

306.353° · 66.159°

HTM-20 index

2044022791