Key parameters at a glance

A radius of 0.87 Earth radii
A mass of 0.59 Earth masses
Surface gravity around 0.78 g
An orbital period of 1.647 days
Semi-major axis 0.0223 AU
Equilibrium temperature 806 K (533 °C)
Distance from Earth 702.00 light-years
Earth Similarity Index 0.391
Travel time at Voyager 1 speed 12,379,687 years
Almost certainly tidally locked to its host star given the close orbit

Kepler-1152 b Planet Profile

Physical Specs

Radius

0.87 R⊕

Radius (Jupiter)

0.078 R♃

Mass

0.59 M⊕

Mass (Jupiter)

0.002 M♃

Density

4.92 g/cm³

Surface Gravity

0.78 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.391

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

#435of 570

top 76.1%

This planet

0.87R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1031 b 0.87 R⊕ Kepler-607 b 0.87 R⊕ Kepler-1542 d 0.87 R⊕

Metric	Earth	Kepler-1152 b	Jupiter
Radius (R⊕)	1.00	0.87	11.21
Mass (M⊕)	1.00	0.59	317.83
Density (g/cm³)	5.51	4.92	1.33
Surface Gravity (g)	1.00	0.78	2.53
Insolation (S⊕)	1.00	139.60	0.037

Star Catalogue Identifiers

TIC

TIC 159382189

Gaia DR2

Gaia DR2 2126870351901388672

Gaia DR3

Gaia DR3 2126870351901388672

System

Kepler-1152

Percentile among Rocky Terrestrial cohort

Radius 0.870 R⊕ · percentile 23 / cohort 570

Mass 0.590 M⊕ · percentile 19 / cohort 570

Orbital period 1.65 d · percentile 19 / cohort 567

Distance 215.23 pc · percentile 33 / cohort 566

ESI 0.391 · percentile 58 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

1.647 days

Semi-major axis

0.0223 AU

Eccentricity

0.000

Inclination

89.30 °

Year Length

A year here lasts approximately 1.65 Earth days (0.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0223 AU.

Transit Fingerprint

Depth

0.031 %

Duration

1.256 h

Impact parameter b

0.345

Rp / R★

0.015446

Transit midpoint (BJD)

2,454,965.0606

Photometric dip

Transit produces a flux drop of 305 ppm lasting ≈ 1.26 h.

Extended Orbital Architecture

Planet / star radius ratio

0.015446

Semi-major axis / stellar radius

10.610

Impact parameter (b)

0.345

Transit mid-time (BJD)

2,454,965.0606

Angular separation (arcsec)

0.10400

Eq. Temperature

806K

(533 °C)

Insolation (S⊕)

139.60

Earth = 1.00

Earth Similarity (ESI)

0.391

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.

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-1152

Spectral Class

K-type orange

Effective Temperature

3,964 K — cooler than the Sun (5,778 K)

Estimated Age

3.47 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.530 R☉

Stellar Mass

0.550 M☉

Metallicity [Fe/H]

-0.25

Extended Stellar Properties

Surface gravity (log g)

4.730 dex

Stellar density

3.728 g/cm³

Metallicity ratio

[Fe/H]

Distance

215.23 parsec

Light-years 702.00 ly

V-band magnitude

15.31 mag

Voyager-speed travel 12,379,687 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

4.617 mas

Total Proper Motion

32.427 mas/yr

PM Right Ascension

16.75 mas/yr

PM Declination

27.76 mas/yr

Galactic Cartesian (pc)

x = 0.251 · y = -0.673 · z = 0.696

Equatorial (J2000)

RA 290.43415° · Dec 44.10778°

Galactic ℓ, b

75.883° · 13.482°

Ecliptic λ, β

306.360° · 64.988°

HTM-20 index

663928149