Key parameters at a glance

A radius of 3.18 Earth radii
A mass of 10.20 Earth masses
Surface gravity around 1.01 g
An orbital period of 41.708 days
Semi-major axis 0.2482 AU
Equilibrium temperature 608 K (335 °C)
Distance from Earth 4,938.07 light-years
Earth Similarity Index 0.377
Travel time at Voyager 1 speed 87,082,808 years

Kepler-1502 b Planet Profile

Physical Specs

Radius

3.18 R⊕

Radius (Jupiter)

0.284 R♃

Mass

10.20 M⊕

Mass (Jupiter)

0.032 M♃

Density

1.74 g/cm³

Surface Gravity

1.01 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.377

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

#367of 1978

top 18.5%

This planet

3.18R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

TOI-2458 c 3.18 R⊕ HD 216520 b 3.18 R⊕ NGTS-4 b 3.18 R⊕

Metric	Earth	Kepler-1502 b	Jupiter
Radius (R⊕)	1.00	3.18	11.21
Mass (M⊕)	1.00	10.20	317.83
Density (g/cm³)	5.51	1.74	1.33
Surface Gravity (g)	1.00	1.01	2.53
Insolation (S⊕)	1.00	77.32	0.037

Star Catalogue Identifiers

TIC

TIC 184298883

Gaia DR2

Gaia DR2 2073199409793428736

Gaia DR3

Gaia DR3 2073199409793428736

System

Kepler-1502

Percentile among Sub-Neptune cohort

Radius 3.180 R⊕ · percentile 81 / cohort 1978

Mass 10.200 M⊕ · percentile 74 / cohort 1978

Orbital period 41.71 d · percentile 82 / cohort 1946

Distance 1,514.02 pc · percentile 93 / cohort 1975

ESI 0.377 · percentile 47 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

41.708 days

Semi-major axis

0.2482 AU

Eccentricity

0.000

Inclination

88.65 °

Year Length

A year here lasts approximately 41.71 Earth days (11.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2482 AU.

Transit Fingerprint

Depth

0.033 %

Duration

8.401 h

Impact parameter b

0.671

Rp / R★

0.016742

Transit midpoint (BJD)

2,454,986.5395

Photometric dip

Transit produces a flux drop of 330 ppm lasting ≈ 8.40 h.

Extended Orbital Architecture

Planet / star radius ratio

0.016742

Semi-major axis / stellar radius

33.100

Impact parameter (b)

0.671

Transit mid-time (BJD)

2,454,986.5395

Angular separation (arcsec)

0.16400

Eq. Temperature

608K

(335 °C)

Insolation (S⊕)

77.32

Earth = 1.00

Earth Similarity (ESI)

0.377

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-1502

Spectral Class

F-type yellow-white

Effective Temperature

6,666 K — hotter than the Sun (5,778 K)

Estimated Age

1.70 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.720 R☉

Stellar Mass

1.440 M☉

Metallicity [Fe/H]

0.05

Extended Stellar Properties

Surface gravity (log g)

4.130 dex

Stellar density

0.394 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,514.02 parsec

Light-years 4,938.07 ly

V-band magnitude

14.18 mag

Voyager-speed travel 87,082,808 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.632 mas

Total Proper Motion

0.677 mas/yr

PM Right Ascension

0.22 mas/yr

PM Declination

-0.64 mas/yr

Galactic Cartesian (pc)

x = 0.340 · y = -0.695 · z = 0.634

Equatorial (J2000)

RA 296.10793° · Dec 39.31992°

Galactic ℓ, b

73.504° · 7.536°

Ecliptic λ, β

311.458° · 59.058°

HTM-20 index

-1133225088