Key parameters at a glance

A radius of 1.25 Earth radii
A mass of 2.10 Earth masses
Surface gravity around 1.34 g
An orbital period of 4.488 days
Semi-major axis 0.0520 AU
Equilibrium temperature 1,305 K (1032 °C)
Distance from Earth 2,542.70 light-years
Earth Similarity Index 0.230
Travel time at Voyager 1 speed 44,840,497 years

Kepler-826 b Planet Profile

Physical Specs

Radius

1.25 R⊕

Radius (Jupiter)

0.112 R♃

Mass

2.10 M⊕

Mass (Jupiter)

0.007 M♃

Density

5.91 g/cm³

Surface Gravity

1.34 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.230

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

#1161of 1176

top 98.6%

This planet

1.25R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-445 d 1.25 R⊕ Kepler-1074 b 1.25 R⊕ Kepler-150 b 1.25 R⊕

Metric	Earth	Kepler-826 b	Jupiter
Radius (R⊕)	1.00	1.25	11.21
Mass (M⊕)	1.00	2.10	317.83
Density (g/cm³)	5.51	5.91	1.33
Surface Gravity (g)	1.00	1.34	2.53
Insolation (S⊕)	1.00	827.22	0.037

Star Catalogue Identifiers

TIC

TIC 120355363

Gaia DR2

Gaia DR2 2100219392634493568

Gaia DR3

Gaia DR3 2100219392634493568

System

Kepler-826

Percentile among Super-Earth cohort

Radius 1.250 R⊕ · percentile 0 / cohort 1176

Mass 2.100 M⊕ · percentile 2 / cohort 1176

Orbital period 4.49 d · percentile 36 / cohort 1164

Distance 779.60 pc · percentile 66 / cohort 1171

ESI 0.230 · percentile 19 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

4.488 days

Semi-major axis

0.0520 AU

Eccentricity

0.000

Inclination

87.03 °

Year Length

A year here lasts approximately 4.49 Earth days (1.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0520 AU.

Transit Fingerprint

Depth

0.011 %

Duration

2.831 h

Impact parameter b

0.540

Rp / R★

0.010131

Transit midpoint (BJD)

2,454,966.3618

Photometric dip

Transit produces a flux drop of 112 ppm lasting ≈ 2.83 h.

Extended Orbital Architecture

Planet / star radius ratio

0.010131

Semi-major axis / stellar radius

12.250

Impact parameter (b)

0.540

Transit mid-time (BJD)

2,454,966.3618

Angular separation (arcsec)

0.06670

Eq. Temperature

1,305K

(1032 °C)

Insolation (S⊕)

827.22

Earth = 1.00

Earth Similarity (ESI)

0.230

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-826

Spectral Class

F-type yellow-white

Effective Temperature

6,079 K — hotter than the Sun (5,778 K)

Estimated Age

4.37 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.150 R☉

Stellar Mass

1.050 M☉

Metallicity [Fe/H]

-0.12

Extended Stellar Properties

Surface gravity (log g)

4.340 dex

Stellar density

0.360 g/cm³

Metallicity ratio

[Fe/H]

Distance

779.60 parsec

Light-years 2,542.70 ly

V-band magnitude

13.64 mag

Voyager-speed travel 44,840,497 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

1.254 mas

Total Proper Motion

9.563 mas/yr

PM Right Ascension

0.67 mas/yr

PM Declination

-9.54 mas/yr

Galactic Cartesian (pc)

x = 0.199 · y = -0.749 · z = 0.633

Equatorial (J2000)

RA 284.86011° · Dec 39.24051°

Galactic ℓ, b

69.554° · 15.330°

Ecliptic λ, β

294.528° · 61.420°

HTM-20 index

-314578296