Key parameters at a glance

A radius of 3.54 Earth radii
A mass of 12.30 Earth masses
Surface gravity around 0.98 g
An orbital period of 40.059 days
Semi-major axis 0.2265 AU
Equilibrium temperature 489 K (216 °C)
Distance from Earth 2,545.92 light-years
Earth Similarity Index 0.440
Travel time at Voyager 1 speed 44,897,382 years

Kepler-802 b Planet Profile

Physical Specs

Radius

3.54 R⊕

Radius (Jupiter)

0.316 R♃

Mass

12.30 M⊕

Mass (Jupiter)

0.039 M♃

Density

1.52 g/cm³

Surface Gravity

0.98 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.440

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

#158of 1978

top 7.9%

This planet

3.54R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1316 b 3.54 R⊕ Kepler-1524 b 3.54 R⊕ HIP 41378 d 3.54 R⊕

Metric	Earth	Kepler-802 b	Jupiter
Radius (R⊕)	1.00	3.54	11.21
Mass (M⊕)	1.00	12.30	317.83
Density (g/cm³)	5.51	1.52	1.33
Surface Gravity (g)	1.00	0.98	2.53
Insolation (S⊕)	1.00	13.51	0.037

Star Catalogue Identifiers

TIC

TIC 158114000

Gaia DR2

Gaia DR2 2106333879874204288

Gaia DR3

Gaia DR3 2106333879874204288

System

Kepler-802

Percentile among Sub-Neptune cohort

Radius 3.540 R⊕ · percentile 92 / cohort 1978

Mass 12.300 M⊕ · percentile 85 / cohort 1978

Orbital period 40.06 d · percentile 80 / cohort 1946

Distance 780.59 pc · percentile 64 / cohort 1975

ESI 0.440 · percentile 60 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

40.059 days

Semi-major axis

0.2265 AU

Eccentricity

0.000

Inclination

88.65 °

Year Length

A year here lasts approximately 40.06 Earth days (11.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2265 AU.

Transit Fingerprint

Depth

0.124 %

Duration

5.533 h

Impact parameter b

0.952

Rp / R★

0.036359

Transit midpoint (BJD)

2,455,002.9113

Photometric dip

Transit produces a flux drop of 1,239 ppm lasting ≈ 5.53 h.

Extended Orbital Architecture

Planet / star radius ratio

0.036359

Semi-major axis / stellar radius

22.100

Impact parameter (b)

0.952

Transit mid-time (BJD)

2,455,002.9113

Angular separation (arcsec)

0.29000

Eq. Temperature

489K

(216 °C)

Insolation (S⊕)

13.51

Earth = 1.00

Earth Similarity (ESI)

0.440

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-802

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,507 K — cooler than the Sun (5,778 K)

Estimated Age

4.68 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.900 R☉

Stellar Mass

0.930 M☉

Metallicity [Fe/H]

0.06

Extended Stellar Properties

Surface gravity (log g)

4.500 dex

Stellar density

0.493 g/cm³

Metallicity ratio

[Fe/H]

Distance

780.59 parsec

Light-years 2,545.92 ly

V-band magnitude

15.01 mag

Voyager-speed travel 44,897,382 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.252 mas

Total Proper Motion

10.573 mas/yr

PM Right Ascension

-8.84 mas/yr

PM Declination

-5.80 mas/yr

Galactic Cartesian (pc)

x = 0.195 · y = -0.680 · z = 0.707

Equatorial (J2000)

RA 286.01580° · Dec 45.00774°

Galactic ℓ, b

75.444° · 16.728°

Ecliptic λ, β

299.682° · 66.804°

HTM-20 index

-1949718761