Key parameters at a glance

A radius of 2.17 Earth radii
A mass of 5.35 Earth masses
Surface gravity around 1.14 g
An orbital period of 27.072 days
Semi-major axis 0.1810 AU
Equilibrium temperature 605 K (332 °C)
Distance from Earth 4,289.80 light-years
Earth Similarity Index 0.440
Travel time at Voyager 1 speed 75,650,608 years

Kepler-797 b Planet Profile

Physical Specs

Radius

2.17 R⊕

Radius (Jupiter)

0.194 R♃

Mass

5.35 M⊕

Mass (Jupiter)

0.017 M♃

Density

2.88 g/cm³

Surface Gravity

1.14 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.440

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

#1720of 1978

top 86.9%

This planet

2.17R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1329 b 2.17 R⊕ Kepler-102 e 2.17 R⊕ Kepler-304 c 2.17 R⊕

Metric	Earth	Kepler-797 b	Jupiter
Radius (R⊕)	1.00	2.17	11.21
Mass (M⊕)	1.00	5.35	317.83
Density (g/cm³)	5.51	2.88	1.33
Surface Gravity (g)	1.00	1.14	2.53
Insolation (S⊕)	1.00	90.10	0.037

Star Catalogue Identifiers

TIC

TIC 169176157

Gaia DR2

Gaia DR2 2076947266967292928

Gaia DR3

Gaia DR3 2076947266967292928

System

Kepler-797

Percentile among Sub-Neptune cohort

Radius 2.170 R⊕ · percentile 13 / cohort 1978

Mass 5.350 M⊕ · percentile 13 / cohort 1978

Orbital period 27.07 d · percentile 71 / cohort 1946

Distance 1,315.26 pc · percentile 89 / cohort 1975

ESI 0.440 · percentile 60 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

27.072 days

Semi-major axis

0.1810 AU

Eccentricity

0.000

Inclination

89.97 °

Year Length

A year here lasts approximately 27.07 Earth days (7.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1810 AU.

Transit Fingerprint

Depth

0.051 %

Duration

6.943 h

Impact parameter b

0.015

Rp / R★

0.021215

Transit midpoint (BJD)

2,454,972.1123

Photometric dip

Transit produces a flux drop of 514 ppm lasting ≈ 6.94 h.

Extended Orbital Architecture

Planet / star radius ratio

0.021215

Semi-major axis / stellar radius

30.330

Impact parameter (b)

0.015

Transit mid-time (BJD)

2,454,972.1123

Angular separation (arcsec)

0.13800

Eq. Temperature

605K

(332 °C)

Insolation (S⊕)

90.10

Earth = 1.00

Earth Similarity (ESI)

0.440

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.

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-797

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,680 K — cooler than the Sun (5,778 K)

Estimated Age

3.89 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.950 R☉

Stellar Mass

0.960 M☉

Metallicity [Fe/H]

-0.02

Extended Stellar Properties

Surface gravity (log g)

4.470 dex

Stellar density

0.720 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,315.26 parsec

Light-years 4,289.80 ly

V-band magnitude

14.75 mag

Voyager-speed travel 75,650,608 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.732 mas

Total Proper Motion

17.647 mas/yr

PM Right Ascension

-7.54 mas/yr

PM Declination

-15.95 mas/yr

Galactic Cartesian (pc)

x = 0.341 · y = -0.663 · z = 0.666

Equatorial (J2000)

RA 297.20891° · Dec 41.78165°

Galactic ℓ, b

76.084° · 8.010°

Ecliptic λ, β

314.790° · 61.058°

HTM-20 index

-810402147