Key parameters at a glance

A radius of 1.47 Earth radii
A mass of 3.24 Earth masses
Surface gravity around 1.50 g
An orbital period of 0.837 days
Semi-major axis 0.0169 AU
Equilibrium temperature 2,188 K (1915 °C)
Distance from Earth 605.04 light-years
Earth Similarity Index 0.122
Travel time at Voyager 1 speed 10,669,861 years

2 siblings around Kepler-10

Kepler-10 b shares its host star with 2 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-10 b this	Super-Earth	1.47	3.24	0.837	2,188	2011
Kepler-10 c	Sub-Neptune	2.36	11.29	45.294	579	2011
Kepler-10 d	Sub-Neptune	3.49	12.00	151.060	387	2023

Kepler-10 b Planet Profile

Physical Specs

Radius

1.47 R⊕

Radius (Jupiter)

0.131 R♃

Mass

3.24 M⊕

Mass (Jupiter)

0.010 M♃

Density

5.54 g/cm³

Surface Gravity

1.50 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.122

HZ Position Inner

Controversial No

Discovery

Year 2011

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#802of 1176

top 68.1%

This planet

1.47R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-292 c 1.47 R⊕ Kepler-1431 b 1.47 R⊕ Kepler-137 b 1.47 R⊕

Metric	Earth	Kepler-10 b	Jupiter
Radius (R⊕)	1.00	1.47	11.21
Mass (M⊕)	1.00	3.24	317.83
Density (g/cm³)	5.51	5.54	1.33
Surface Gravity (g)	1.00	1.50	2.53
Insolation (S⊕)	1.00	3,741.78	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	3.240 M⊕	Direct mass measurement (not derived).
Minimum mass (M sin i)	3.658 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 377780790

Gaia DR2

Gaia DR2 2132155017099178624

Gaia DR3

Gaia DR3 2132155017099178624

System

Kepler-10

Percentile among Super-Earth cohort

Radius 1.470 R⊕ · percentile 31 / cohort 1176

Mass 3.240 M⊕ · percentile 48 / cohort 1176

Orbital period 0.84 d · percentile 4 / cohort 1164

Distance 185.51 pc · percentile 23 / cohort 1171

ESI 0.122 · percentile 2 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

0.837 days

Semi-major axis

0.0169 AU

Eccentricity

0.000

Inclination

84.80 °

Year Length

A year here lasts roughly 20.1 hours long on a nearly circular orbit at a mean orbital distance of 0.0169 AU.

Transit Fingerprint

Depth

0.019 %

Duration

1.811 h

Impact parameter b

0.339

Rp / R★

0.012680

Transit midpoint (BJD)

2,455,034.0869

Photometric dip

Transit produces a flux drop of 192 ppm lasting ≈ 1.81 h.

Extended Orbital Architecture

Planet / star radius ratio

0.012680

Semi-major axis / stellar radius

3.654

Impact parameter (b)

0.339

RV semi-amplitude (K)

2.320 m/s

Occultation depth

0.001 ppm

Transit mid-time (BJD)

2,455,034.0869

Angular separation (arcsec)

0.09080

Eq. Temperature

2,188K

(1915 °C)

Insolation (S⊕)

3,741.78

Earth = 1.00

Earth Similarity (ESI)

0.122

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Radial velocity

Stellar wobble has been measured spectroscopically.

Orbital-brightness modulation

Host star brightness varies with the planet's orbit.

Discovery Paper

Primary reference

Batahla et al. 2011

Instrument

Kepler CCD Array

Publication

2011-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2011 at Kepler (12 shown).

Kepler-22 b · Sub-Neptune Kepler-20 d · Sub-Neptune Kepler-26 c · Sub-Neptune Kepler-19 c · Sub-Neptune Kepler-26 b · Sub-Neptune Kepler-28 c · Super-Earth Kepler-10 c · Sub-Neptune Kepler-20 f · Rocky Terrestrial Kepler-42 d · Rocky Terrestrial Kepler-16 b · Neptune-like Kepler-28 b · Super-Earth Kepler-34 b · Neptune-like

Host System: Kepler-10

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,708 K — cooler than the Sun (5,778 K)

Estimated Age

10.60 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.065 R☉

Stellar Mass

0.910 M☉

Metallicity [Fe/H]

-0.15

Extended Stellar Properties

Surface gravity (log g)

4.344 dex

Stellar density

1.068 g/cm³

Systemic radial velocity

-98.74 km/s

Rotational v·sin i

2.04 km/s

Metallicity ratio

[Fe/H]

Distance

185.51 parsec

Light-years 605.04 ly

V-band magnitude

11.04 mag

Voyager-speed travel 10,669,861 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

5.362 mas

Total Proper Motion

45.346 mas/yr

PM Right Ascension

-18.39 mas/yr

PM Declination

41.45 mas/yr

Galactic Cartesian (pc)

x = 0.173 · y = -0.616 · z = 0.769

Equatorial (J2000)

RA 285.67930° · Dec 50.24148°

Galactic ℓ, b

80.490° · 18.816°

Ecliptic λ, β

303.697° · 71.850°

HTM-20 index

512815427