Key parameters at a glance

A radius of 1.33 Earth radii
A mass of 2.33 Earth masses
Surface gravity around 1.32 g
An orbital period of 20.706 days
Semi-major axis 0.1629 AU
Equilibrium temperature 967 K (694 °C)
Distance from Earth 4,110.48 light-years
Earth Similarity Index 0.321
Travel time at Voyager 1 speed 72,488,290 years

Kepler-1508 b Planet Profile

Physical Specs

Radius

1.33 R⊕

Radius (Jupiter)

0.119 R♃

Mass

2.33 M⊕

Mass (Jupiter)

0.007 M♃

Density

5.44 g/cm³

Surface Gravity

1.32 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.321

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

#1022of 1176

top 86.8%

This planet

1.33R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-393 c 1.33 R⊕ Kepler-286 d 1.33 R⊕ Kepler-220 e 1.33 R⊕

Metric	Earth	Kepler-1508 b	Jupiter
Radius (R⊕)	1.00	1.33	11.21
Mass (M⊕)	1.00	2.33	317.83
Density (g/cm³)	5.51	5.44	1.33
Surface Gravity (g)	1.00	1.32	2.53
Insolation (S⊕)	1.00	116.15	0.037

Star Catalogue Identifiers

TIC

TIC 170346081

Gaia DR2

Gaia DR2 2073768853731839104

Gaia DR3

Gaia DR3 2073768853731839104

System

Kepler-1508

Percentile among Super-Earth cohort

Radius 1.330 R⊕ · percentile 11 / cohort 1176

Mass 2.330 M⊕ · percentile 11 / cohort 1176

Orbital period 20.71 d · percentile 86 / cohort 1164

Distance 1,260.28 pc · percentile 90 / cohort 1171

ESI 0.321 · percentile 42 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

20.706 days

Semi-major axis

0.1629 AU

Eccentricity

0.000

Inclination

82.32 °

Year Length

A year here lasts approximately 20.71 Earth days (5.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1629 AU.

Transit Fingerprint

Depth

0.012 %

Duration

9.029 h

Impact parameter b

0.135

Rp / R★

0.009764

Transit midpoint (BJD)

2,454,972.9846

Photometric dip

Transit produces a flux drop of 116 ppm lasting ≈ 9.03 h.

Extended Orbital Architecture

Planet / star radius ratio

0.009764

Semi-major axis / stellar radius

17.540

Impact parameter (b)

0.135

Transit mid-time (BJD)

2,454,972.9846

Angular separation (arcsec)

0.12900

Eq. Temperature

967K

(694 °C)

Insolation (S⊕)

116.15

Earth = 1.00

Earth Similarity (ESI)

0.321

0 = alien, 1 = Earth-identical

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

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-1508

Spectral Class

F-type yellow-white

Effective Temperature

6,158 K — hotter than the Sun (5,778 K)

Estimated Age

2.69 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.220 R☉

Stellar Mass

1.140 M☉

Metallicity [Fe/H]

0.01

Extended Stellar Properties

Surface gravity (log g)

4.320 dex

Stellar density

0.238 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,260.28 parsec

Light-years 4,110.48 ly

V-band magnitude

14.56 mag

Voyager-speed travel 72,488,290 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.765 mas

Total Proper Motion

5.265 mas/yr

PM Right Ascension

2.83 mas/yr

PM Declination

-4.44 mas/yr

Galactic Cartesian (pc)

x = 0.359 · y = -0.672 · z = 0.648

Equatorial (J2000)

RA 298.11888° · Dec 40.37503°

Galactic ℓ, b

75.197° · 6.715°

Ecliptic λ, β

315.017° · 59.497°

HTM-20 index

-619467426