Key parameters at a glance

A radius of 2.46 Earth radii
A mass of 6.62 Earth masses
Surface gravity around 1.09 g
An orbital period of 17.445 days
Semi-major axis 0.1263 AU
Equilibrium temperature 679 K (406 °C)
Distance from Earth 2,480.19 light-years
Earth Similarity Index 0.375
Travel time at Voyager 1 speed 43,738,114 years

Kepler-751 b Planet Profile

Physical Specs

Radius

2.46 R⊕

Radius (Jupiter)

0.219 R♃

Mass

6.62 M⊕

Mass (Jupiter)

0.021 M♃

Density

2.44 g/cm³

Surface Gravity

1.09 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.375

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

#1245of 1978

top 62.9%

This planet

2.46R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

TOI-5800 b 2.46 R⊕ Kepler-282 d 2.46 R⊕ GJ 3341 b 2.46 R⊕

Metric	Earth	Kepler-751 b	Jupiter
Radius (R⊕)	1.00	2.46	11.21
Mass (M⊕)	1.00	6.62	317.83
Density (g/cm³)	5.51	2.44	1.33
Surface Gravity (g)	1.00	1.09	2.53
Insolation (S⊕)	1.00	39.01	0.037

Star Catalogue Identifiers

TIC

TIC 271259677

Gaia DR2

Gaia DR2 2078310008545447808

Gaia DR3

Gaia DR3 2078310008545447808

System

Kepler-751

Percentile among Sub-Neptune cohort

Radius 2.460 R⊕ · percentile 37 / cohort 1978

Mass 6.620 M⊕ · percentile 35 / cohort 1978

Orbital period 17.44 d · percentile 57 / cohort 1946

Distance 760.43 pc · percentile 63 / cohort 1975

ESI 0.375 · percentile 47 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

17.445 days

Semi-major axis

0.1263 AU

Eccentricity

0.000

Inclination

86.98 °

Year Length

A year here lasts approximately 17.44 Earth days (4.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1263 AU.

Transit Fingerprint

Depth

0.086 %

Duration

4.099 h

Impact parameter b

0.250

Rp / R★

0.026605

Transit midpoint (BJD)

2,454,974.6779

Photometric dip

Transit produces a flux drop of 856 ppm lasting ≈ 4.10 h.

Extended Orbital Architecture

Planet / star radius ratio

0.026605

Semi-major axis / stellar radius

32.380

Impact parameter (b)

0.250

Transit mid-time (BJD)

2,454,974.6779

Angular separation (arcsec)

0.16600

Eq. Temperature

679K

(406 °C)

Insolation (S⊕)

39.01

Earth = 1.00

Earth Similarity (ESI)

0.375

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-751

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,387 K — cooler than the Sun (5,778 K)

Estimated Age

4.47 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.840 R☉

Stellar Mass

0.870 M☉

Metallicity [Fe/H]

-0.06

Extended Stellar Properties

Surface gravity (log g)

4.540 dex

Stellar density

2.111 g/cm³

Metallicity ratio

[Fe/H]

Distance

760.43 parsec

Light-years 2,480.19 ly

V-band magnitude

15.21 mag

Voyager-speed travel 43,738,114 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.287 mas

Total Proper Motion

2.816 mas/yr

PM Right Ascension

-1.44 mas/yr

PM Declination

-2.42 mas/yr

Galactic Cartesian (pc)

x = 0.302 · y = -0.652 · z = 0.696

Equatorial (J2000)

RA 294.84381° · Dec 44.07769°

Galactic ℓ, b

77.288° · 10.628°

Ecliptic λ, β

313.197° · 63.838°

HTM-20 index

-1288330212