Key parameters at a glance

A radius of 0.76 Earth radii
A mass of 0.36 Earth masses
Surface gravity around 0.63 g
An orbital period of 2.034 days
Semi-major axis 0.0322 AU
Equilibrium temperature 1,789 K (1516 °C)
Distance from Earth 4,871.60 light-years
Earth Similarity Index 0.154
Travel time at Voyager 1 speed 85,910,599 years

Kepler-1402 b Planet Profile

Physical Specs

Radius

0.76 R⊕

Radius (Jupiter)

0.068 R♃

Mass

0.36 M⊕

Mass (Jupiter)

0.001 M♃

Density

4.54 g/cm³

Surface Gravity

0.63 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.154

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

#499of 570

top 87.4%

This planet

0.76R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1542 e 0.76 R⊕ Kepler-1542 b 0.76 R⊕ Kepler-1588 b 0.76 R⊕

Metric	Earth	Kepler-1402 b	Jupiter
Radius (R⊕)	1.00	0.76	11.21
Mass (M⊕)	1.00	0.36	317.83
Density (g/cm³)	5.51	4.54	1.33
Surface Gravity (g)	1.00	0.63	2.53
Insolation (S⊕)	1.00	2,491.12	0.037

Star Catalogue Identifiers

TIC

TIC 26540675

Gaia DR2

Gaia DR2 2129725749238044928

Gaia DR3

Gaia DR3 2129725749238044928

System

Kepler-1402

Percentile among Rocky Terrestrial cohort

Radius 0.760 R⊕ · percentile 12 / cohort 570

Mass 0.363 M⊕ · percentile 9 / cohort 570

Orbital period 2.03 d · percentile 22 / cohort 567

Distance 1,493.64 pc · percentile 98 / cohort 566

ESI 0.154 · percentile 6 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

2.034 days

Semi-major axis

0.0322 AU

Eccentricity

0.000

Inclination

87.24 °

Year Length

A year here lasts approximately 2.03 Earth days (0.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0322 AU.

Transit Fingerprint

Depth

0.007 %

Duration

3.201 h

Impact parameter b

0.238

Rp / R★

0.008320

Transit midpoint (BJD)

2,454,964.9169

Photometric dip

Transit produces a flux drop of 74 ppm lasting ≈ 3.20 h.

Extended Orbital Architecture

Planet / star radius ratio

0.008320

Semi-major axis / stellar radius

4.951

Impact parameter (b)

0.238

Transit mid-time (BJD)

2,454,964.9169

Angular separation (arcsec)

0.02160

Eq. Temperature

1,789K

(1516 °C)

Insolation (S⊕)

2,491.12

Earth = 1.00

Earth Similarity (ESI)

0.154

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

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-1402

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,416 K — cooler than the Sun (5,778 K)

Estimated Age

4.57 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.870 R☉

Stellar Mass

0.900 M☉

Metallicity [Fe/H]

0.03

Extended Stellar Properties

Surface gravity (log g)

4.530 dex

Stellar density

0.387 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,493.64 parsec

Light-years 4,871.60 ly

V-band magnitude

14.78 mag

Voyager-speed travel 85,910,599 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.641 mas

Total Proper Motion

8.077 mas/yr

PM Right Ascension

-0.55 mas/yr

PM Declination

8.06 mas/yr

Galactic Cartesian (pc)

x = 0.244 · y = -0.609 · z = 0.754

Equatorial (J2000)

RA 291.84783° · Dec 48.96817°

Galactic ℓ, b

80.852° · 14.637°

Ecliptic λ, β

313.325° · 69.143°

HTM-20 index

734791553