Key parameters at a glance

A radius of 1.53 Earth radii
A mass of 2.96 Earth masses
Surface gravity around 1.26 g
An orbital period of 34.142 days
Semi-major axis 0.1690 AU
Equilibrium temperature 337 K (64 °C)
Distance from Earth 544.68 light-years
Earth Similarity Index 0.802
Travel time at Voyager 1 speed 9,605,440 years
Almost certainly tidally locked to its host star given the close orbit

Context from the literature

Kepler-296e is a confirmed super-Earth exoplanet orbiting within the habitable zone of Kepler-296. The planet was discovered by NASA's Kepler spacecraft using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. NASA announced the discovery of the exoplanet on 26 February 2014.

Excerpted from Wikipedia · full article

4 siblings around Kepler-296

Kepler-296 e shares its host star with 4 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-296 c	Sub-Neptune	2.00	4.66	5.842	606	2014
Kepler-296 b	Super-Earth	1.61	3.22	10.864	495	2014
Kepler-296 d	Sub-Neptune	2.09	5.02	19.850	403	2014
Kepler-296 e this	Super-Earth	1.53	2.96	34.142	337	2014
Kepler-296 f	Super-Earth	1.80	3.89	63.336	274	2014

Kepler-296 e Planet Profile

Physical Specs

Radius

1.53 R⊕

Radius (Jupiter)

0.137 R♃

Mass

2.96 M⊕

Mass (Jupiter)

0.009 M♃

Density

4.10 g/cm³

Surface Gravity

1.26 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.802

HZ Position Habitable

Controversial No

Discovery

Year 2014

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#687of 1176

top 58.3%

This planet

1.53R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-228 b 1.53 R⊕ Kepler-147 b 1.53 R⊕ Kepler-54 d 1.53 R⊕

Metric	Earth	Kepler-296 e	Jupiter
Radius (R⊕)	1.00	1.53	11.21
Mass (M⊕)	1.00	2.96	317.83
Density (g/cm³)	5.51	4.10	1.33
Surface Gravity (g)	1.00	1.26	2.53
Insolation (S⊕)	1.00	1.41	0.037

Star Catalogue Identifiers

TIC

TIC 243271945

Gaia DR2

Gaia DR2 2132069633148965888

Gaia DR3

Gaia DR3 2132069633148965888

System

Kepler-296

Percentile among Super-Earth cohort

Radius 1.530 R⊕ · percentile 40 / cohort 1176

Mass 2.960 M⊕ · percentile 37 / cohort 1176

Orbital period 34.14 d · percentile 93 / cohort 1164

Distance 167.00 pc · percentile 21 / cohort 1171

ESI 0.802 · percentile 89 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

34.142 days

Semi-major axis

0.1690 AU

Eccentricity

0.330

Inclination

89.89 °

Year Length

A year here lasts approximately 34.14 Earth days (9.3% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.1690 AU.

Transit Fingerprint

Depth

0.079 %

Duration

2.945 h

Impact parameter b

0.340

Rp / R★

0.029100

Transit midpoint (BJD)

2,454,969.0350

Photometric dip

Transit produces a flux drop of 788 ppm lasting ≈ 2.95 h.

Extended Orbital Architecture

Planet / star radius ratio

0.029100

Semi-major axis / stellar radius

76.200

Impact parameter (b)

0.340

Transit mid-time (BJD)

2,454,969.0350

Angular separation (arcsec)

1.01000

Eq. Temperature

337K

(64 °C)

Insolation (S⊕)

1.41

Earth = 1.00

Earth Similarity (ESI)

0.802

0 = alien, 1 = Earth-identical

Within the conservative habitable zone — liquid water is physically possible with adequate atmospheric pressure. Close-orbiting tidally-locked around a cool host.

Discovery Paper

Primary reference

Rowe et al. 2014

Instrument

Kepler CCD Array

Publication

2014-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2014 at Kepler (12 shown).

Kepler-186 e · Super-Earth Kepler-395 c · Super-Earth Kepler-220 e · Super-Earth Kepler-249 d · Super-Earth Kepler-296 f · Super-Earth Kepler-367 c · Rocky Terrestrial Kepler-155 c · Sub-Neptune Kepler-138 d · Super-Earth Kepler-333 c · Rocky Terrestrial Kepler-331 d · Super-Earth Kepler-267 d · Sub-Neptune Kepler-220 d · Rocky Terrestrial

Host System: Kepler-296

Spectral Class

M-type red dwarf

Effective Temperature

3,740 K — cooler than the Sun (5,778 K)

Estimated Age

4.20 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.480 R☉

Stellar Mass

0.498 M☉

Metallicity [Fe/H]

-0.08

Extended Stellar Properties

Surface gravity (log g)

4.774 dex

Stellar density

6.400 g/cm³

Metallicity ratio

[Fe/H]

Distance

167.00 parsec

Light-years 544.68 ly

V-band magnitude

16.36 mag

Voyager-speed travel 9,605,440 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Total Proper Motion

11.640 mas/yr

PM Right Ascension

1.84 mas/yr

PM Declination

-11.49 mas/yr

Galactic Cartesian (pc)

x = 0.185 · y = -0.623 · z = 0.760

Equatorial (J2000)

RA 286.54003° · Dec 49.43726°

Galactic ℓ, b

79.901° · 18.014°

Ecliptic λ, β

304.458° · 70.904°

HTM-20 index

339564586

Wikipedia →