Key parameters at a glance

A radius of 1.14 Earth radii
A mass of 1.55 Earth masses
Surface gravity around 1.19 g
An orbital period of 4.551 days
Semi-major axis 0.0499 AU
Equilibrium temperature 907 K (634 °C)
Distance from Earth 2,168.38 light-years
Earth Similarity Index 0.351
Travel time at Voyager 1 speed 38,239,431 years

Kepler-1263 b Planet Profile

Physical Specs

Radius

1.14 R⊕

Radius (Jupiter)

0.102 R♃

Mass

1.55 M⊕

Mass (Jupiter)

0.005 M♃

Density

5.75 g/cm³

Surface Gravity

1.19 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.351

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

#169of 570

top 29.5%

This planet

1.14R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-320 b 1.14 R⊕ Kepler-303 c 1.14 R⊕ Kepler-1456 b 1.14 R⊕

Metric	Earth	Kepler-1263 b	Jupiter
Radius (R⊕)	1.00	1.14	11.21
Mass (M⊕)	1.00	1.55	317.83
Density (g/cm³)	5.51	5.75	1.33
Surface Gravity (g)	1.00	1.19	2.53
Insolation (S⊕)	1.00	144.81	0.037

Star Catalogue Identifiers

TIC

TIC 158270568

Gaia DR2

Gaia DR2 2130550520397270016

Gaia DR3

Gaia DR3 2130550520397270016

System

Kepler-1263

Percentile among Rocky Terrestrial cohort

Radius 1.140 R⊕ · percentile 69 / cohort 570

Mass 1.550 M⊕ · percentile 63 / cohort 570

Orbital period 4.55 d · percentile 50 / cohort 567

Distance 664.83 pc · percentile 77 / cohort 566

ESI 0.351 · percentile 51 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

4.551 days

Semi-major axis

0.0499 AU

Eccentricity

0.000

Inclination

88.98 °

Year Length

A year here lasts approximately 4.55 Earth days (1.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0499 AU.

Transit Fingerprint

Depth

0.019 %

Duration

2.491 h

Impact parameter b

0.248

Rp / R★

0.013329

Transit midpoint (BJD)

2,454,966.0603

Photometric dip

Transit produces a flux drop of 189 ppm lasting ≈ 2.49 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013329

Semi-major axis / stellar radius

13.900

Impact parameter (b)

0.248

Transit mid-time (BJD)

2,454,966.0603

Angular separation (arcsec)

0.07510

Eq. Temperature

907K

(634 °C)

Insolation (S⊕)

144.81

Earth = 1.00

Earth Similarity (ESI)

0.351

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

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-1263

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,213 K — cooler than the Sun (5,778 K)

Estimated Age

4.90 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.800 R☉

Stellar Mass

0.840 M☉

Metallicity [Fe/H]

-0.03

Extended Stellar Properties

Surface gravity (log g)

4.560 dex

Stellar density

2.453 g/cm³

Metallicity ratio

[Fe/H]

Distance

664.83 parsec

Light-years 2,168.38 ly

V-band magnitude

15.17 mag

Voyager-speed travel 38,239,431 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.475 mas

Total Proper Motion

1.475 mas/yr

PM Right Ascension

0.07 mas/yr

PM Declination

-1.47 mas/yr

Galactic Cartesian (pc)

x = 0.194 · y = -0.657 · z = 0.728

Equatorial (J2000)

RA 286.48363° · Dec 46.75262°

Galactic ℓ, b

77.264° · 17.073°

Ecliptic λ, β

301.838° · 68.378°

HTM-20 index

-1303411816