Key parameters at a glance

A radius of 2.87 Earth radii
A mass of 8.60 Earth masses
Surface gravity around 1.04 g
An orbital period of 5.753 days
Semi-major axis 0.0633 AU
Equilibrium temperature 920 K (647 °C)
Distance from Earth 2,403.05 light-years
Earth Similarity Index 0.259
Travel time at Voyager 1 speed 42,377,765 years

Kepler-1011 b Planet Profile

Physical Specs

Radius

2.87 R⊕

Radius (Jupiter)

0.256 R♃

Mass

8.60 M⊕

Mass (Jupiter)

0.027 M♃

Density

2.00 g/cm³

Surface Gravity

1.04 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.259

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

#659of 1978

top 33.3%

This planet

2.87R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-297 b 2.87 R⊕ Kepler-880 c 2.87 R⊕ Kepler-11 c 2.87 R⊕

Metric	Earth	Kepler-1011 b	Jupiter
Radius (R⊕)	1.00	2.87	11.21
Mass (M⊕)	1.00	8.60	317.83
Density (g/cm³)	5.51	2.00	1.33
Surface Gravity (g)	1.00	1.04	2.53
Insolation (S⊕)	1.00	108.79	0.037

Star Catalogue Identifiers

TIC

TIC 273130565

Gaia DR2

Gaia DR2 2080310088916950016

Gaia DR3

Gaia DR3 2080310088916950016

System

Kepler-1011

Percentile among Sub-Neptune cohort

Radius 2.870 R⊕ · percentile 66 / cohort 1978

Mass 8.600 M⊕ · percentile 61 / cohort 1978

Orbital period 5.75 d · percentile 16 / cohort 1946

Distance 736.78 pc · percentile 61 / cohort 1975

ESI 0.259 · percentile 18 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

5.753 days

Semi-major axis

0.0633 AU

Eccentricity

0.000

Inclination

85.36 °

Year Length

A year here lasts approximately 5.75 Earth days (1.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0633 AU.

Transit Fingerprint

Depth

0.082 %

Duration

1.683 h

Impact parameter b

0.840

Rp / R★

0.030078

Transit midpoint (BJD)

2,454,969.7562

Photometric dip

Transit produces a flux drop of 815 ppm lasting ≈ 1.68 h.

Extended Orbital Architecture

Planet / star radius ratio

0.030078

Semi-major axis / stellar radius

11.380

Impact parameter (b)

0.840

Transit mid-time (BJD)

2,454,969.7562

Angular separation (arcsec)

0.08590

Eq. Temperature

920K

(647 °C)

Insolation (S⊕)

108.79

Earth = 1.00

Earth Similarity (ESI)

0.259

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-1011

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

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

Estimated Age

4.47 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.880 R☉

Stellar Mass

0.910 M☉

Metallicity [Fe/H]

0.08

Extended Stellar Properties

Surface gravity (log g)

4.520 dex

Stellar density

2.171 g/cm³

Metallicity ratio

[Fe/H]

Distance

736.78 parsec

Light-years 2,403.05 ly

V-band magnitude

15.29 mag

Voyager-speed travel 42,377,765 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.329 mas

Total Proper Motion

3.063 mas/yr

PM Right Ascension

-1.60 mas/yr

PM Declination

-2.61 mas/yr

Galactic Cartesian (pc)

x = 0.315 · y = -0.607 · z = 0.729

Equatorial (J2000)

RA 297.40155° · Dec 46.82400°

Galactic ℓ, b

80.612° · 10.348°

Ecliptic λ, β

319.674° · 65.605°

HTM-20 index

1125776783