Key parameters at a glance

A radius of 9.17 Earth radii
A mass of 61.80 Earth masses
Surface gravity around 0.73 g
An orbital period of 10.526 days
Semi-major axis 0.0880 AU
Equilibrium temperature 713 K (440 °C)
Distance from Earth 3,235.70 light-years
Earth Similarity Index 0.199
Travel time at Voyager 1 speed 57,061,550 years

Kepler-702 b Planet Profile

Physical Specs

Radius

9.17 R⊕

Radius (Jupiter)

0.818 R♃

Mass

61.80 M⊕

Mass (Jupiter)

0.194 M♃

Density

0.44 g/cm³

Surface Gravity

0.73 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.199

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

#72of 574

top 12.4%

This planet

9.17R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

HD 221416 b 9.17 R⊕ TOI-837 b 9.17 R⊕ Kepler-1654 b 9.18 R⊕

Metric	Earth	Kepler-702 b	Jupiter
Radius (R⊕)	1.00	9.17	11.21
Mass (M⊕)	1.00	61.80	317.83
Density (g/cm³)	5.51	0.44	1.33
Surface Gravity (g)	1.00	0.73	2.53
Insolation (S⊕)	1.00	88.91	0.037

Star Catalogue Identifiers

TIC

TIC 138430864

Gaia DR2

Gaia DR2 2077424210192781440

Gaia DR3

Gaia DR3 2077424210192781440

System

Kepler-702

Percentile among Neptune-like cohort

Radius 9.170 R⊕ · percentile 87 / cohort 574

Mass 61.800 M⊕ · percentile 80 / cohort 574

Orbital period 10.53 d · percentile 38 / cohort 524

Distance 992.07 pc · percentile 73 / cohort 572

ESI 0.199 · percentile 28 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

10.526 days

Semi-major axis

0.0880 AU

Eccentricity

0.000

Inclination

88.69 °

Year Length

A year here lasts approximately 10.53 Earth days (2.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0880 AU.

Transit Fingerprint

Depth

0.977 %

Duration

2.521 h

Impact parameter b

0.644

Rp / R★

0.098191

Transit midpoint (BJD)

2,455,009.5225

Photometric dip

Transit produces a flux drop of 9,768 ppm lasting ≈ 2.52 h.

Extended Orbital Architecture

Planet / star radius ratio

0.098191

Semi-major axis / stellar radius

28.260

Impact parameter (b)

0.644

Transit mid-time (BJD)

2,455,009.5225

Angular separation (arcsec)

0.08870

Eq. Temperature

713K

(440 °C)

Insolation (S⊕)

88.91

Earth = 1.00

Earth Similarity (ESI)

0.199

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-702

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,419 K — cooler than the Sun (5,778 K)

Estimated Age

4.47 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.860 R☉

Stellar Mass

0.900 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.530 dex

Stellar density

3.853 g/cm³

Metallicity ratio

[Fe/H]

Distance

992.07 parsec

Light-years 3,235.70 ly

V-band magnitude

15.44 mag

Voyager-speed travel 57,061,550 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.980 mas

Total Proper Motion

7.553 mas/yr

PM Right Ascension

3.03 mas/yr

PM Declination

-6.92 mas/yr

Galactic Cartesian (pc)

x = 0.302 · y = -0.683 · z = 0.665

Equatorial (J2000)

RA 293.87810° · Dec 41.66172°

Galactic ℓ, b

74.778° · 10.138°

Ecliptic λ, β

309.844° · 61.838°

HTM-20 index

-879883643