Key parameters at a glance

A radius of 1.47 Earth radii
A mass of 2.76 Earth masses
Surface gravity around 1.28 g
An orbital period of 13.933 days
Semi-major axis 0.1187 AU
Equilibrium temperature 852 K (579 °C)
Distance from Earth 1,009.77 light-years
Earth Similarity Index 0.356
Travel time at Voyager 1 speed 17,807,221 years

Kepler-909 b Planet Profile

Physical Specs

Radius

1.47 R⊕

Radius (Jupiter)

0.131 R♃

Mass

2.76 M⊕

Mass (Jupiter)

0.009 M♃

Density

4.77 g/cm³

Surface Gravity

1.28 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.356

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

#802of 1176

top 68.1%

This planet

1.47R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-292 c 1.47 R⊕ Kepler-10 b 1.47 R⊕ Kepler-137 b 1.47 R⊕

Metric	Earth	Kepler-909 b	Jupiter
Radius (R⊕)	1.00	1.47	11.21
Mass (M⊕)	1.00	2.76	317.83
Density (g/cm³)	5.51	4.77	1.33
Surface Gravity (g)	1.00	1.28	2.53
Insolation (S⊕)	1.00	127.24	0.037

Star Catalogue Identifiers

TIC

TIC 159096688

Gaia DR2

Gaia DR2 2127259505997243648

Gaia DR3

Gaia DR3 2127259505997243648

System

Kepler-909

Percentile among Super-Earth cohort

Radius 1.470 R⊕ · percentile 31 / cohort 1176

Mass 2.760 M⊕ · percentile 29 / cohort 1176

Orbital period 13.93 d · percentile 75 / cohort 1164

Distance 309.60 pc · percentile 33 / cohort 1171

ESI 0.356 · percentile 52 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

13.933 days

Semi-major axis

0.1187 AU

Eccentricity

0.000

Inclination

87.14 °

Year Length

A year here lasts approximately 13.93 Earth days (3.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1187 AU.

Transit Fingerprint

Depth

0.013 %

Duration

2.512 h

Impact parameter b

0.299

Rp / R★

0.010682

Transit midpoint (BJD)

2,454,972.4120

Photometric dip

Transit produces a flux drop of 132 ppm lasting ≈ 2.51 h.

Extended Orbital Architecture

Planet / star radius ratio

0.010682

Semi-major axis / stellar radius

40.910

Impact parameter (b)

0.299

Transit mid-time (BJD)

2,454,972.4120

Angular separation (arcsec)

0.38300

Eq. Temperature

852K

(579 °C)

Insolation (S⊕)

127.24

Earth = 1.00

Earth Similarity (ESI)

0.356

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-909

Spectral Class

F-type yellow-white

Effective Temperature

6,154 K — hotter than the Sun (5,778 K)

Estimated Age

2.88 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.230 R☉

Stellar Mass

1.170 M☉

Metallicity [Fe/H]

0.08

Extended Stellar Properties

Surface gravity (log g)

4.330 dex

Stellar density

0.660 g/cm³

Systemic radial velocity

-27.31 km/s

Metallicity ratio

[Fe/H]

Distance

309.60 parsec

Light-years 1,009.77 ly

V-band magnitude

11.63 mag

Voyager-speed travel 17,807,221 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

3.201 mas

Total Proper Motion

11.117 mas/yr

PM Right Ascension

1.82 mas/yr

PM Declination

-10.97 mas/yr

Galactic Cartesian (pc)

x = 0.235 · y = -0.662 · z = 0.712

Equatorial (J2000)

RA 289.50638° · Dec 45.37097°

Galactic ℓ, b

76.787° · 14.604°

Ecliptic λ, β

305.862° · 66.398°

HTM-20 index

2106100945