Key parameters at a glance

A radius of 1.92 Earth radii
A mass of 4.35 Earth masses
Surface gravity around 1.18 g
An orbital period of 2.608 days
Semi-major axis 0.0393 AU
Equilibrium temperature 1,431 K (1158 °C)
Distance from Earth 6,936.85 light-years
Earth Similarity Index 0.184
Travel time at Voyager 1 speed 122,331,323 years

Kepler-1250 b Planet Profile

Physical Specs

Radius

1.92 R⊕

Radius (Jupiter)

0.171 R♃

Mass

4.35 M⊕

Mass (Jupiter)

0.014 M♃

Density

3.38 g/cm³

Surface Gravity

1.18 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.184

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

#102of 1176

top 8.6%

This planet

1.92R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

K2-61 b 1.92 R⊕ Kepler-1119 b 1.92 R⊕ HD 3167 d 1.92 R⊕

Metric	Earth	Kepler-1250 b	Jupiter
Radius (R⊕)	1.00	1.92	11.21
Mass (M⊕)	1.00	4.35	317.83
Density (g/cm³)	5.51	3.38	1.33
Surface Gravity (g)	1.00	1.18	2.53
Insolation (S⊕)	1.00	1,866.19	0.037

Star Catalogue Identifiers

TIC

TIC 158559861

Gaia DR2

Gaia DR2 2130269320298515712

Gaia DR3

Gaia DR3 2130269320298515712

System

Kepler-1250

Percentile among Super-Earth cohort

Radius 1.920 R⊕ · percentile 90 / cohort 1176

Mass 4.350 M⊕ · percentile 84 / cohort 1176

Orbital period 2.61 d · percentile 18 / cohort 1164

Distance 2,126.85 pc · percentile 98 / cohort 1171

ESI 0.184 · percentile 9 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

2.608 days

Semi-major axis

0.0393 AU

Eccentricity

0.000

Inclination

89.17 °

Year Length

A year here lasts approximately 2.61 Earth days (0.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0393 AU.

Transit Fingerprint

Depth

0.035 %

Duration

1.465 h

Impact parameter b

0.206

Rp / R★

0.018079

Transit midpoint (BJD)

2,454,964.8354

Photometric dip

Transit produces a flux drop of 352 ppm lasting ≈ 1.46 h.

Extended Orbital Architecture

Planet / star radius ratio

0.018079

Semi-major axis / stellar radius

14.270

Impact parameter (b)

0.206

Transit mid-time (BJD)

2,454,964.8354

Angular separation (arcsec)

0.01850

Eq. Temperature

1,431K

(1158 °C)

Insolation (S⊕)

1,866.19

Earth = 1.00

Earth Similarity (ESI)

0.184

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-1250

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,717 K — cooler than the Sun (5,778 K)

Estimated Age

4.57 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.980 R☉

Stellar Mass

0.990 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

4.460 dex

Stellar density

8.088 g/cm³

Metallicity ratio

[Fe/H]

Distance

2,126.85 parsec

Light-years 6,936.85 ly

V-band magnitude

15.69 mag

Voyager-speed travel 122,331,323 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.440 mas

Total Proper Motion

5.737 mas/yr

PM Right Ascension

-5.68 mas/yr

PM Declination

-0.79 mas/yr

Galactic Cartesian (pc)

x = 0.212 · y = -0.662 · z = 0.719

Equatorial (J2000)

RA 287.79382° · Dec 45.98025°

Galactic ℓ, b

76.875° · 15.944°

Ecliptic λ, β

303.481° · 67.362°

HTM-20 index

-1741534155