Key parameters at a glance

A radius of 1.46 Earth radii
A mass of 2.73 Earth masses
Surface gravity around 1.28 g
An orbital period of 1.435 days
Semi-major axis 0.0252 AU
Equilibrium temperature 1,664 K (1391 °C)
Distance from Earth 2,982.04 light-years
Earth Similarity Index 0.169
Travel time at Voyager 1 speed 52,588,291 years

Kepler-1091 b Planet Profile

Physical Specs

Radius

1.46 R⊕

Radius (Jupiter)

0.130 R♃

Mass

2.73 M⊕

Mass (Jupiter)

0.009 M♃

Density

4.82 g/cm³

Surface Gravity

1.28 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.169

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

#819of 1176

top 69.6%

This planet

1.46R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-190 c 1.46 R⊕ Kepler-808 b 1.46 R⊕ Kepler-366 b 1.46 R⊕

Metric	Earth	Kepler-1091 b	Jupiter
Radius (R⊕)	1.00	1.46	11.21
Mass (M⊕)	1.00	2.73	317.83
Density (g/cm³)	5.51	4.82	1.33
Surface Gravity (g)	1.00	1.28	2.53
Insolation (S⊕)	1.00	1,740.86	0.037

Star Catalogue Identifiers

TIC

TIC 269262974

Gaia DR2

Gaia DR2 2075987599477644672

Gaia DR3

Gaia DR3 2075987599477644672

System

Kepler-1091

Percentile among Super-Earth cohort

Radius 1.460 R⊕ · percentile 29 / cohort 1176

Mass 2.730 M⊕ · percentile 27 / cohort 1176

Orbital period 1.43 d · percentile 9 / cohort 1164

Distance 914.30 pc · percentile 76 / cohort 1171

ESI 0.169 · percentile 7 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

1.435 days

Semi-major axis

0.0252 AU

Eccentricity

0.000

Inclination

88.96 °

Year Length

A year here lasts approximately 1.43 Earth days (0.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0252 AU.

Transit Fingerprint

Depth

0.020 %

Duration

1.881 h

Impact parameter b

0.280

Rp / R★

0.013299

Transit midpoint (BJD)

2,454,965.6294

Photometric dip

Transit produces a flux drop of 201 ppm lasting ≈ 1.88 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013299

Semi-major axis / stellar radius

5.958

Impact parameter (b)

0.280

Transit mid-time (BJD)

2,454,965.6294

Angular separation (arcsec)

0.02760

Eq. Temperature

1,664K

(1391 °C)

Insolation (S⊕)

1,740.86

Earth = 1.00

Earth Similarity (ESI)

0.169

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-1091

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,851 K — hotter than the Sun (5,778 K)

Estimated Age

3.47 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.030 R☉

Stellar Mass

1.010 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.420 dex

Stellar density

1.944 g/cm³

Metallicity ratio

[Fe/H]

Distance

914.30 parsec

Light-years 2,982.04 ly

V-band magnitude

14.87 mag

Voyager-speed travel 52,588,291 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.065 mas

Total Proper Motion

6.468 mas/yr

PM Right Ascension

-1.49 mas/yr

PM Declination

-6.29 mas/yr

Galactic Cartesian (pc)

x = 0.359 · y = -0.628 · z = 0.691

Equatorial (J2000)

RA 299.78544° · Dec 43.67072°

Galactic ℓ, b

78.691° · 7.322°

Ecliptic λ, β

320.015° · 62.036°

HTM-20 index

1846622047