Key parameters at a glance

A radius of 2.11 Earth radii
A mass of 5.10 Earth masses
Surface gravity around 1.15 g
An orbital period of 41.698 days
Semi-major axis 0.2236 AU
Equilibrium temperature 537 K (264 °C)
Distance from Earth 2,471.58 light-years
Earth Similarity Index 0.496
Travel time at Voyager 1 speed 43,586,325 years

Kepler-906 b Planet Profile

Physical Specs

Radius

2.11 R⊕

Radius (Jupiter)

0.188 R♃

Mass

5.10 M⊕

Mass (Jupiter)

0.016 M♃

Density

2.98 g/cm³

Surface Gravity

1.15 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.496

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

#1806of 1978

top 91.3%

This planet

2.11R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

61 Vir b 2.11 R⊕ TOI-1238 c 2.11 R⊕ Kepler-1484 b 2.11 R⊕

Metric	Earth	Kepler-906 b	Jupiter
Radius (R⊕)	1.00	2.11	11.21
Mass (M⊕)	1.00	5.10	317.83
Density (g/cm³)	5.51	2.98	1.33
Surface Gravity (g)	1.00	1.15	2.53
Insolation (S⊕)	1.00	21.99	0.037

Star Catalogue Identifiers

TIC

TIC 137154728

Gaia DR2

Gaia DR2 2053438127812903296

Gaia DR3

Gaia DR3 2053438127812903296

System

Kepler-906

Percentile among Sub-Neptune cohort

Radius 2.110 R⊕ · percentile 8 / cohort 1978

Mass 5.100 M⊕ · percentile 9 / cohort 1978

Orbital period 41.70 d · percentile 81 / cohort 1946

Distance 757.79 pc · percentile 62 / cohort 1975

ESI 0.496 · percentile 70 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

41.698 days

Semi-major axis

0.2236 AU

Eccentricity

0.000

Inclination

90.00 °

Year Length

A year here lasts approximately 41.70 Earth days (11.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2236 AU.

Transit Fingerprint

Depth

0.044 %

Duration

5.675 h

Impact parameter b

0.747

Rp / R★

0.018901

Transit midpoint (BJD)

2,455,002.5764

Photometric dip

Transit produces a flux drop of 441 ppm lasting ≈ 5.68 h.

Extended Orbital Architecture

Planet / star radius ratio

0.018901

Semi-major axis / stellar radius

56.910

Impact parameter (b)

0.747

Transit mid-time (BJD)

2,455,002.5764

Angular separation (arcsec)

0.29500

Eq. Temperature

537K

(264 °C)

Insolation (S⊕)

21.99

Earth = 1.00

Earth Similarity (ESI)

0.496

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-906

Spectral Class

F-type yellow-white

Effective Temperature

6,035 K — hotter than the Sun (5,778 K)

Estimated Age

1.86 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.020 R☉

Stellar Mass

1.060 M☉

Metallicity [Fe/H]

-0.09

Extended Stellar Properties

Surface gravity (log g)

4.450 dex

Stellar density

0.810 g/cm³

Metallicity ratio

[Fe/H]

Distance

757.79 parsec

Light-years 2,471.58 ly

V-band magnitude

14.02 mag

Voyager-speed travel 43,586,325 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

1.291 mas

Total Proper Motion

16.778 mas/yr

PM Right Ascension

-3.83 mas/yr

PM Declination

-16.34 mas/yr

Galactic Cartesian (pc)

x = 0.279 · y = -0.712 · z = 0.644

Equatorial (J2000)

RA 291.40556° · Dec 40.12543°

Galactic ℓ, b

72.525° · 11.113°

Ecliptic λ, β

305.115° · 60.981°

HTM-20 index

1378542073