Key parameters at a glance

A radius of 3.26 Earth radii
A mass of 10.70 Earth masses
Surface gravity around 1.01 g
An orbital period of 187.747 days
Semi-major axis 0.5791 AU
Equilibrium temperature 267 K (-6 °C)
Distance from Earth 2,347.68 light-years
Earth Similarity Index 0.656
Travel time at Voyager 1 speed 41,401,289 years

Kepler-1097 b Planet Profile

Physical Specs

Radius

3.26 R⊕

Radius (Jupiter)

0.291 R♃

Mass

10.70 M⊕

Mass (Jupiter)

0.034 M♃

Density

1.70 g/cm³

Surface Gravity

1.01 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.656

HZ Position Habitable

Controversial No

Discovery

Year 2016

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#305of 1978

top 15.4%

This planet

3.26R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-987 b 3.26 R⊕ Kepler-368 b 3.26 R⊕ Kepler-287 c 3.26 R⊕

Metric	Earth	Kepler-1097 b	Jupiter
Radius (R⊕)	1.00	3.26	11.21
Mass (M⊕)	1.00	10.70	317.83
Density (g/cm³)	5.51	1.70	1.33
Surface Gravity (g)	1.00	1.01	2.53
Insolation (S⊕)	1.00	1.30	0.037

Star Catalogue Identifiers

TIC

TIC 123316380

Gaia DR2

Gaia DR2 2104822188824798848

Gaia DR3

Gaia DR3 2104822188824798848

System

Kepler-1097

Percentile among Sub-Neptune cohort

Radius 3.260 R⊕ · percentile 84 / cohort 1978

Mass 10.700 M⊕ · percentile 78 / cohort 1978

Orbital period 187.75 d · percentile 98 / cohort 1946

Distance 719.80 pc · percentile 61 / cohort 1975

ESI 0.656 · percentile 88 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

187.747 days

Semi-major axis

0.5791 AU

Eccentricity

0.000

Inclination

90.00 °

Year Length

A year here lasts approximately 187.75 Earth days (51.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.5791 AU.

Transit Fingerprint

Depth

0.158 %

Duration

5.408 h

Impact parameter b

0.290

Rp / R★

0.037919

Transit midpoint (BJD)

2,454,990.3577

Photometric dip

Transit produces a flux drop of 1,583 ppm lasting ≈ 5.41 h.

Extended Orbital Architecture

Planet / star radius ratio

0.037919

Semi-major axis / stellar radius

252.450

Impact parameter (b)

0.290

Transit mid-time (BJD)

2,454,990.3577

Angular separation (arcsec)

0.80500

Eq. Temperature

267K

(-6 °C)

Insolation (S⊕)

1.30

Earth = 1.00

Earth Similarity (ESI)

0.656

0 = alien, 1 = Earth-identical

Within the conservative habitable zone — surface water would be frozen.

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Transit timing variations

Gravitational interactions from neighbours have been detected.

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-1097

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,211 K — cooler than the Sun (5,778 K)

Estimated Age

4.90 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.790 R☉

Stellar Mass

0.820 M☉

Metallicity [Fe/H]

-0.11

Extended Stellar Properties

Surface gravity (log g)

4.570 dex

Stellar density

8.634 g/cm³

Metallicity ratio

[Fe/H]

Distance

719.80 parsec

Light-years 2,347.68 ly

V-band magnitude

15.65 mag

Voyager-speed travel 41,401,289 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.361 mas

Total Proper Motion

3.105 mas/yr

PM Right Ascension

-1.61 mas/yr

PM Declination

-2.66 mas/yr

Galactic Cartesian (pc)

x = 0.148 · y = -0.721 · z = 0.677

Equatorial (J2000)

RA 281.59413° · Dec 42.59639°

Galactic ℓ, b

71.884° · 18.850°

Ecliptic λ, β

290.655° · 65.206°

HTM-20 index

-1860435626