Key parameters at a glance

A radius of 0.91 Earth radii
A mass of 0.69 Earth masses
Surface gravity around 0.84 g
An orbital period of 8.384 days
Semi-major axis 0.0896 AU
Equilibrium temperature 1,285 K (1012 °C)
Distance from Earth 5,060.44 light-years
Earth Similarity Index 0.239
Travel time at Voyager 1 speed 89,240,869 years

Kepler-1296 b Planet Profile

Physical Specs

Radius

0.91 R⊕

Radius (Jupiter)

0.081 R♃

Mass

0.69 M⊕

Mass (Jupiter)

0.002 M♃

Density

5.05 g/cm³

Surface Gravity

0.84 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.239

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

#406of 570

top 71.1%

This planet

0.91R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1992 b 0.91 R⊕ Kepler-197 e 0.91 R⊕ Kepler-1525 b 0.91 R⊕

Metric	Earth	Kepler-1296 b	Jupiter
Radius (R⊕)	1.00	0.91	11.21
Mass (M⊕)	1.00	0.69	317.83
Density (g/cm³)	5.51	5.05	1.33
Surface Gravity (g)	1.00	0.84	2.53
Insolation (S⊕)	1.00	399.02	0.037

Star Catalogue Identifiers

TIC

TIC 137410211

Gaia DR2

Gaia DR2 2101644600223555328

Gaia DR3

Gaia DR3 2101644600223555328

System

Kepler-1296

Percentile among Rocky Terrestrial cohort

Radius 0.910 R⊕ · percentile 28 / cohort 570

Mass 0.693 M⊕ · percentile 24 / cohort 570

Orbital period 8.38 d · percentile 75 / cohort 567

Distance 1,551.54 pc · percentile 99 / cohort 566

ESI 0.239 · percentile 23 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

8.384 days

Semi-major axis

0.0896 AU

Eccentricity

0.000

Inclination

81.36 °

Year Length

A year here lasts approximately 8.38 Earth days (2.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0896 AU.

Transit Fingerprint

Depth

0.011 %

Duration

4.992 h

Impact parameter b

0.042

Rp / R★

0.009725

Transit midpoint (BJD)

2,454,967.4118

Photometric dip

Transit produces a flux drop of 109 ppm lasting ≈ 4.99 h.

Extended Orbital Architecture

Planet / star radius ratio

0.009725

Semi-major axis / stellar radius

12.956

Impact parameter (b)

0.042

Transit mid-time (BJD)

2,454,967.4118

Angular separation (arcsec)

0.05770

Eq. Temperature

1,285K

(1012 °C)

Insolation (S⊕)

399.02

Earth = 1.00

Earth Similarity (ESI)

0.239

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-1296

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,359 K — cooler than the Sun (5,778 K)

Estimated Age

4.17 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.830 R☉

Stellar Mass

0.870 M☉

Metallicity [Fe/H]

-0.04

Extended Stellar Properties

Surface gravity (log g)

4.550 dex

Stellar density

0.585 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,551.54 parsec

Light-years 5,060.44 ly

V-band magnitude

14.93 mag

Voyager-speed travel 89,240,869 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.616 mas

Total Proper Motion

13.707 mas/yr

PM Right Ascension

-12.73 mas/yr

PM Declination

-5.08 mas/yr

Galactic Cartesian (pc)

x = 0.282 · y = -0.695 · z = 0.661

Equatorial (J2000)

RA 292.12510° · Dec 41.40779°

Galactic ℓ, b

73.942° · 11.193°

Ecliptic λ, β

307.033° · 62.032°

HTM-20 index

-422523159