Key parameters at a glance

A radius of 2.09 Earth radii
A mass of 5.02 Earth masses
Surface gravity around 1.15 g
An orbital period of 15.285 days
Semi-major axis 0.1224 AU
Equilibrium temperature 852 K (579 °C)
Distance from Earth 3,781.16 light-years
Earth Similarity Index 0.317
Travel time at Voyager 1 speed 66,680,737 years

Kepler-602 b Planet Profile

Physical Specs

Radius

2.09 R⊕

Radius (Jupiter)

0.186 R♃

Mass

5.02 M⊕

Mass (Jupiter)

0.016 M♃

Density

3.02 g/cm³

Surface Gravity

1.15 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.317

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

#1832of 1978

top 92.6%

This planet

2.09R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-317 b 2.09 R⊕ Kepler-151 c 2.09 R⊕ Kepler-372 c 2.09 R⊕

Metric	Earth	Kepler-602 b	Jupiter
Radius (R⊕)	1.00	2.09	11.21
Mass (M⊕)	1.00	5.02	317.83
Density (g/cm³)	5.51	3.02	1.33
Surface Gravity (g)	1.00	1.15	2.53
Insolation (S⊕)	1.00	128.78	0.037

Star Catalogue Identifiers

TIC

TIC 272180918

Gaia DR2

Gaia DR2 2077119752853895552

Gaia DR3

Gaia DR3 2077119752853895552

System

Kepler-602

Percentile among Sub-Neptune cohort

Radius 2.090 R⊕ · percentile 7 / cohort 1978

Mass 5.020 M⊕ · percentile 8 / cohort 1978

Orbital period 15.28 d · percentile 51 / cohort 1946

Distance 1,159.31 pc · percentile 85 / cohort 1975

ESI 0.317 · percentile 32 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

15.285 days

Semi-major axis

0.1224 AU

Eccentricity

0.000

Inclination

86.51 °

Year Length

A year here lasts approximately 15.28 Earth days (4.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1224 AU.

Transit Fingerprint

Depth

0.032 %

Duration

5.901 h

Impact parameter b

0.796

Rp / R★

0.016986

Transit midpoint (BJD)

2,455,008.6226

Photometric dip

Transit produces a flux drop of 321 ppm lasting ≈ 5.90 h.

Extended Orbital Architecture

Planet / star radius ratio

0.016986

Semi-major axis / stellar radius

12.200

Impact parameter (b)

0.796

Transit mid-time (BJD)

2,455,008.6226

Angular separation (arcsec)

0.10600

Eq. Temperature

852K

(579 °C)

Insolation (S⊕)

128.78

Earth = 1.00

Earth Similarity (ESI)

0.317

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-602

Spectral Class

F-type yellow-white

Effective Temperature

6,062 K — hotter than the Sun (5,778 K)

Estimated Age

3.16 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.130 R☉

Stellar Mass

1.080 M☉

Metallicity [Fe/H]

-0.02

Extended Stellar Properties

Surface gravity (log g)

4.370 dex

Stellar density

0.573 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,159.31 parsec

Light-years 3,781.16 ly

V-band magnitude

14.72 mag

Voyager-speed travel 66,680,737 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.834 mas

Total Proper Motion

23.603 mas/yr

PM Right Ascension

-13.53 mas/yr

PM Declination

-19.34 mas/yr

Galactic Cartesian (pc)

x = 0.325 · y = -0.666 · z = 0.671

Equatorial (J2000)

RA 296.03190° · Dec 42.14186°

Galactic ℓ, b

75.972° · 8.950°

Ecliptic λ, β

313.374° · 61.718°

HTM-20 index

1357733566