Key parameters at a glance

A radius of 1.36 Earth radii
A mass of 2.42 Earth masses
Surface gravity around 1.31 g
An orbital period of 2.707 days
Semi-major axis 0.0402 AU
Equilibrium temperature 1,709 K (1436 °C)
Distance from Earth 1,525.00 light-years
Earth Similarity Index 0.167
Travel time at Voyager 1 speed 26,893,393 years

Kepler-997 b Planet Profile

Physical Specs

Radius

1.36 R⊕

Radius (Jupiter)

0.121 R♃

Mass

2.42 M⊕

Mass (Jupiter)

0.008 M♃

Density

5.29 g/cm³

Surface Gravity

1.31 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.167

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

#981of 1176

top 83.3%

This planet

1.36R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-1246 b 1.36 R⊕ Kepler-373 b 1.36 R⊕ Kepler-372 b 1.36 R⊕

Metric	Earth	Kepler-997 b	Jupiter
Radius (R⊕)	1.00	1.36	11.21
Mass (M⊕)	1.00	2.42	317.83
Density (g/cm³)	5.51	5.29	1.33
Surface Gravity (g)	1.00	1.31	2.53
Insolation (S⊕)	1.00	1,900.13	0.037

Star Catalogue Identifiers

TIC

TIC 299159378

Gaia DR2

Gaia DR2 2132709613336959744

Gaia DR3

Gaia DR3 2132709613336959744

System

Kepler-997

Percentile among Super-Earth cohort

Radius 1.360 R⊕ · percentile 16 / cohort 1176

Mass 2.420 M⊕ · percentile 16 / cohort 1176

Orbital period 2.71 d · percentile 18 / cohort 1164

Distance 467.57 pc · percentile 45 / cohort 1171

ESI 0.167 · percentile 7 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

2.707 days

Semi-major axis

0.0402 AU

Eccentricity

0.000

Inclination

89.93 °

Year Length

A year here lasts approximately 2.71 Earth days (0.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0402 AU.

Transit Fingerprint

Depth

0.007 %

Duration

3.462 h

Impact parameter b

0.608

Rp / R★

0.007910

Transit midpoint (BJD)

2,454,965.4310

Photometric dip

Transit produces a flux drop of 74 ppm lasting ≈ 3.46 h.

Extended Orbital Architecture

Planet / star radius ratio

0.007910

Semi-major axis / stellar radius

6.090

Impact parameter (b)

0.608

Transit mid-time (BJD)

2,454,965.4310

Angular separation (arcsec)

0.08600

Eq. Temperature

1,709K

(1436 °C)

Insolation (S⊕)

1,900.13

Earth = 1.00

Earth Similarity (ESI)

0.167

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-997

Spectral Class

F-type yellow-white

Effective Temperature

6,150 K — hotter than the Sun (5,778 K)

Estimated Age

3.63 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.560 R☉

Stellar Mass

1.220 M☉

Metallicity [Fe/H]

0.05

Extended Stellar Properties

Surface gravity (log g)

4.140 dex

Stellar density

0.310 g/cm³

Systemic radial velocity

-28.54 km/s

Metallicity ratio

[Fe/H]

Distance

467.57 parsec

Light-years 1,525.00 ly

V-band magnitude

11.52 mag

Voyager-speed travel 26,893,393 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

2.110 mas

Total Proper Motion

13.507 mas/yr

PM Right Ascension

-3.43 mas/yr

PM Declination

-13.07 mas/yr

Galactic Cartesian (pc)

x = 0.212 · y = -0.608 · z = 0.765

Equatorial (J2000)

RA 289.23338° · Dec 49.93890°

Galactic ℓ, b

81.066° · 16.583°

Ecliptic λ, β

309.949° · 70.721°

HTM-20 index

604179197