Key parameters at a glance

A radius of 1.78 Earth radii
A mass of 3.82 Earth masses
Surface gravity around 1.21 g
An orbital period of 3.555 days
Semi-major axis 0.0433 AU
Equilibrium temperature 1,157 K (884 °C)
Distance from Earth 3,072.07 light-years
Earth Similarity Index 0.241
Travel time at Voyager 1 speed 54,175,949 years

Kepler-1003 b Planet Profile

Physical Specs

Radius

1.78 R⊕

Radius (Jupiter)

0.159 R♃

Mass

3.82 M⊕

Mass (Jupiter)

0.012 M♃

Density

3.72 g/cm³

Surface Gravity

1.21 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.241

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

#282of 1176

top 23.9%

This planet

1.78R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-1544 b 1.78 R⊕ Kepler-881 b 1.78 R⊕ GJ 676 A d 1.78 R⊕

Metric	Earth	Kepler-1003 b	Jupiter
Radius (R⊕)	1.00	1.78	11.21
Mass (M⊕)	1.00	3.82	317.83
Density (g/cm³)	5.51	3.72	1.33
Surface Gravity (g)	1.00	1.21	2.53
Insolation (S⊕)	1.00	814.93	0.037

Star Catalogue Identifiers

TIC

TIC 63074840

Gaia DR2

Gaia DR2 2126597054542193536

Gaia DR3

Gaia DR3 2126597054542193536

System

Kepler-1003

Percentile among Super-Earth cohort

Radius 1.780 R⊕ · percentile 75 / cohort 1176

Mass 3.820 M⊕ · percentile 69 / cohort 1176

Orbital period 3.55 d · percentile 27 / cohort 1164

Distance 941.90 pc · percentile 78 / cohort 1171

ESI 0.241 · percentile 21 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

3.555 days

Semi-major axis

0.0433 AU

Eccentricity

0.000

Inclination

88.47 °

Year Length

A year here lasts approximately 3.55 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0433 AU.

Transit Fingerprint

Depth

0.023 %

Duration

2.103 h

Impact parameter b

0.331

Rp / R★

0.014325

Transit midpoint (BJD)

2,454,964.8040

Photometric dip

Transit produces a flux drop of 233 ppm lasting ≈ 2.10 h.

Extended Orbital Architecture

Planet / star radius ratio

0.014325

Semi-major axis / stellar radius

13.104

Impact parameter (b)

0.331

Transit mid-time (BJD)

2,454,964.8040

Angular separation (arcsec)

0.04600

Eq. Temperature

1,157K

(884 °C)

Insolation (S⊕)

814.93

Earth = 1.00

Earth Similarity (ESI)

0.241

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-1003

Spectral Class

F-type yellow-white

Effective Temperature

6,109 K — hotter than the Sun (5,778 K)

Estimated Age

3.16 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.170 R☉

Stellar Mass

1.110 M☉

Metallicity [Fe/H]

0.01

Extended Stellar Properties

Surface gravity (log g)

4.350 dex

Stellar density

0.420 g/cm³

Metallicity ratio

[Fe/H]

Distance

941.90 parsec

Light-years 3,072.07 ly

V-band magnitude

14.13 mag

Voyager-speed travel 54,175,949 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.033 mas

Total Proper Motion

4.992 mas/yr

PM Right Ascension

-2.06 mas/yr

PM Declination

4.55 mas/yr

Galactic Cartesian (pc)

x = 0.266 · y = -0.657 · z = 0.706

Equatorial (J2000)

RA 292.02043° · Dec 44.87624°

Galactic ℓ, b

77.093° · 12.787°

Ecliptic λ, β

309.518° · 65.322°

HTM-20 index

552444225