Key parameters at a glance

A radius of 1.14 Earth radii
A mass of 1.55 Earth masses
Surface gravity around 1.19 g
An orbital period of 8.092 days
Semi-major axis 0.0768 AU
Equilibrium temperature 1,089 K (816 °C)
Distance from Earth 1,180.35 light-years
Earth Similarity Index 0.288
Travel time at Voyager 1 speed 20,815,392 years

Kepler-806 b Planet Profile

Physical Specs

Radius

1.14 R⊕

Radius (Jupiter)

0.102 R♃

Mass

1.55 M⊕

Mass (Jupiter)

0.005 M♃

Density

5.75 g/cm³

Surface Gravity

1.19 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.288

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

#169of 570

top 29.5%

This planet

1.14R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-320 b 1.14 R⊕ Kepler-303 c 1.14 R⊕ Kepler-1456 b 1.14 R⊕

Metric	Earth	Kepler-806 b	Jupiter
Radius (R⊕)	1.00	1.14	11.21
Mass (M⊕)	1.00	1.55	317.83
Density (g/cm³)	5.51	5.75	1.33
Surface Gravity (g)	1.00	1.19	2.53
Insolation (S⊕)	1.00	413.60	0.037

Star Catalogue Identifiers

TIC

TIC 272172942

Gaia DR2

Gaia DR2 2079752464723012096

Gaia DR3

Gaia DR3 2079752464723012096

System

Kepler-806

Percentile among Rocky Terrestrial cohort

Radius 1.140 R⊕ · percentile 69 / cohort 570

Mass 1.550 M⊕ · percentile 63 / cohort 570

Orbital period 8.09 d · percentile 74 / cohort 567

Distance 361.90 pc · percentile 48 / cohort 566

ESI 0.288 · percentile 35 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

8.092 days

Semi-major axis

0.0768 AU

Eccentricity

0.000

Inclination

75.28 °

Year Length

A year here lasts approximately 8.09 Earth days (2.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0768 AU.

Transit Fingerprint

Depth

0.007 %

Duration

5.455 h

Impact parameter b

0.799

Rp / R★

0.008845

Transit midpoint (BJD)

2,454,971.0467

Photometric dip

Transit produces a flux drop of 65 ppm lasting ≈ 5.46 h.

Extended Orbital Architecture

Planet / star radius ratio

0.008845

Semi-major axis / stellar radius

6.400

Impact parameter (b)

0.799

Transit mid-time (BJD)

2,454,971.0467

Angular separation (arcsec)

0.21200

Eq. Temperature

1,089K

(816 °C)

Insolation (S⊕)

413.60

Earth = 1.00

Earth Similarity (ESI)

0.288

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-806

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,770 K — cooler than the Sun (5,778 K)

Estimated Age

7.76 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.160 R☉

Stellar Mass

0.990 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.300 dex

Stellar density

0.240 g/cm³

Systemic radial velocity

-64.50 km/s

Metallicity ratio

[Fe/H]

Distance

361.90 parsec

Light-years 1,180.35 ly

V-band magnitude

11.81 mag

Voyager-speed travel 20,815,392 yr

Multi-band Host Photometry — 14 bands

Astrometric Data

Parallax

2.735 mas

Total Proper Motion

33.314 mas/yr

PM Right Ascension

19.53 mas/yr

PM Declination

26.99 mas/yr

Galactic Cartesian (pc)

x = 0.311 · y = -0.637 · z = 0.705

Equatorial (J2000)

RA 296.00720° · Dec 44.85357°

Galactic ℓ, b

78.381° · 10.259°

Ecliptic λ, β

315.634° · 64.228°

HTM-20 index

-1977323868