Key parameters at a glance

A radius of 2.13 Earth radii
A mass of 5.18 Earth masses
Surface gravity around 1.14 g
An orbital period of 82.304 days
Semi-major axis 0.3704 AU
Equilibrium temperature 485 K (212 °C)
Distance from Earth 7,944.96 light-years
Earth Similarity Index 0.541
Travel time at Voyager 1 speed 140,109,441 years

Kepler-1504 b Planet Profile

Physical Specs

Radius

2.13 R⊕

Radius (Jupiter)

0.190 R♃

Mass

5.18 M⊕

Mass (Jupiter)

0.016 M♃

Density

2.95 g/cm³

Surface Gravity

1.14 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.541

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

#1765of 1978

top 89.2%

This planet

2.13R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-200 b 2.13 R⊕ Kepler-214 c 2.13 R⊕ HD 40307 f 2.13 R⊕

Metric	Earth	Kepler-1504 b	Jupiter
Radius (R⊕)	1.00	2.13	11.21
Mass (M⊕)	1.00	5.18	317.83
Density (g/cm³)	5.51	2.95	1.33
Surface Gravity (g)	1.00	1.14	2.53
Insolation (S⊕)	1.00	25.17	0.037

Star Catalogue Identifiers

TIC

TIC 416281986

Gaia DR2

Gaia DR2 2133044040969963776

Gaia DR3

Gaia DR3 2133044040969963776

System

Kepler-1504

Percentile among Sub-Neptune cohort

Radius 2.130 R⊕ · percentile 10 / cohort 1978

Mass 5.180 M⊕ · percentile 11 / cohort 1978

Orbital period 82.30 d · percentile 92 / cohort 1946

Distance 2,435.94 pc · percentile 98 / cohort 1975

ESI 0.541 · percentile 75 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

82.304 days

Semi-major axis

0.3704 AU

Eccentricity

0.000

Inclination

87.87 °

Year Length

A year here lasts approximately 82.30 Earth days (22.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.3704 AU.

Transit Fingerprint

Depth

0.074 %

Duration

13.843 h

Impact parameter b

0.036

Rp / R★

0.024475

Transit midpoint (BJD)

2,454,992.0380

Photometric dip

Transit produces a flux drop of 737 ppm lasting ≈ 13.84 h.

Extended Orbital Architecture

Planet / star radius ratio

0.024475

Semi-major axis / stellar radius

46.507

Impact parameter (b)

0.036

Transit mid-time (BJD)

2,454,992.0380

Angular separation (arcsec)

0.15200

Eq. Temperature

485K

(212 °C)

Insolation (S⊕)

25.17

Earth = 1.00

Earth Similarity (ESI)

0.541

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-1504

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,393 K — cooler than the Sun (5,778 K)

Estimated Age

4.47 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.810 R☉

Stellar Mass

0.850 M☉

Metallicity [Fe/H]

-0.17

Extended Stellar Properties

Surface gravity (log g)

4.550 dex

Stellar density

0.281 g/cm³

Metallicity ratio

[Fe/H]

Distance

2,435.94 parsec

Light-years 7,944.96 ly

V-band magnitude

15.88 mag

Voyager-speed travel 140,109,441 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.379 mas

Total Proper Motion

1.470 mas/yr

PM Right Ascension

-1.43 mas/yr

PM Declination

0.33 mas/yr

Galactic Cartesian (pc)

x = 0.216 · y = -0.604 · z = 0.767

Equatorial (J2000)

RA 289.71199° · Dec 50.12823°

Galactic ℓ, b

81.373° · 16.373°

Ecliptic λ, β

311.033° · 70.771°

HTM-20 index

74431681