Key parameters at a glance

A radius of 2.81 Earth radii
A mass of 8.30 Earth masses
Surface gravity around 1.05 g
An orbital period of 18.827 days
Semi-major axis 0.1353 AU
Equilibrium temperature 632 K (359 °C)
Distance from Earth 4,019.19 light-years
Earth Similarity Index 0.382
Travel time at Voyager 1 speed 70,878,372 years

Kepler-752 b Planet Profile

Physical Specs

Radius

2.81 R⊕

Radius (Jupiter)

0.251 R♃

Mass

8.30 M⊕

Mass (Jupiter)

0.026 M♃

Density

2.06 g/cm³

Surface Gravity

1.05 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.382

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

#732of 1978

top 37.0%

This planet

2.81R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-892 b 2.81 R⊕ Kepler-1234 b 2.81 R⊕ Kepler-1333 b 2.81 R⊕

Metric	Earth	Kepler-752 b	Jupiter
Radius (R⊕)	1.00	2.81	11.21
Mass (M⊕)	1.00	8.30	317.83
Density (g/cm³)	5.51	2.06	1.33
Surface Gravity (g)	1.00	1.05	2.53
Insolation (S⊕)	1.00	45.28	0.037

Star Catalogue Identifiers

TIC

TIC 137548225

Gaia DR2

Gaia DR2 2051896440713570048

Gaia DR3

Gaia DR3 2051896440713570048

System

Kepler-752

Percentile among Sub-Neptune cohort

Radius 2.810 R⊕ · percentile 63 / cohort 1978

Mass 8.300 M⊕ · percentile 57 / cohort 1978

Orbital period 18.83 d · percentile 60 / cohort 1946

Distance 1,232.29 pc · percentile 87 / cohort 1975

ESI 0.382 · percentile 49 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

18.827 days

Semi-major axis

0.1353 AU

Eccentricity

0.000

Inclination

89.96 °

Year Length

A year here lasts approximately 18.83 Earth days (5.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1353 AU.

Transit Fingerprint

Depth

0.101 %

Duration

4.732 h

Impact parameter b

0.025

Rp / R★

0.031086

Transit midpoint (BJD)

2,455,029.1891

Photometric dip

Transit produces a flux drop of 1,006 ppm lasting ≈ 4.73 h.

Extended Orbital Architecture

Planet / star radius ratio

0.031086

Semi-major axis / stellar radius

31.720

Impact parameter (b)

0.025

Transit mid-time (BJD)

2,455,029.1891

Angular separation (arcsec)

0.11000

Eq. Temperature

632K

(359 °C)

Insolation (S⊕)

45.28

Earth = 1.00

Earth Similarity (ESI)

0.382

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-752

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,373 K — cooler than the Sun (5,778 K)

Estimated Age

4.07 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.830 R☉

Stellar Mass

0.870 M☉

Metallicity [Fe/H]

-0.08

Extended Stellar Properties

Surface gravity (log g)

4.540 dex

Stellar density

1.615 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,232.29 parsec

Light-years 4,019.19 ly

V-band magnitude

15.86 mag

Voyager-speed travel 70,878,372 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.784 mas

Total Proper Motion

9.587 mas/yr

PM Right Ascension

3.13 mas/yr

PM Declination

9.06 mas/yr

Galactic Cartesian (pc)

x = 0.299 · y = -0.730 · z = 0.615

Equatorial (J2000)

RA 292.26815° · Dec 37.95567°

Galactic ℓ, b

70.859° · 9.540°

Ecliptic λ, β

305.116° · 58.710°

HTM-20 index

1253025159