Key parameters at a glance

A radius of 1.59 Earth radii
A mass of 3.15 Earth masses
Surface gravity around 1.25 g
An orbital period of 9.549 days
Semi-major axis 0.0646 AU
Equilibrium temperature 374 K (101 °C)
Distance from Earth 323.12 light-years
Earth Similarity Index 0.742
Travel time at Voyager 1 speed 5,698,200 years
Almost certainly tidally locked to its host star given the close orbit

Kepler-504 b Planet Profile

Physical Specs

Radius

1.59 R⊕

Radius (Jupiter)

0.142 R♃

Mass

3.15 M⊕

Mass (Jupiter)

0.010 M♃

Density

4.31 g/cm³

Surface Gravity

1.25 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.742

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

#588of 1176

top 49.9%

This planet

1.59R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-55 f 1.59 R⊕ Kepler-200 c 1.59 R⊕ Kepler-256 b 1.59 R⊕

Metric	Earth	Kepler-504 b	Jupiter
Radius (R⊕)	1.00	1.59	11.21
Mass (M⊕)	1.00	3.15	317.83
Density (g/cm³)	5.51	4.31	1.33
Surface Gravity (g)	1.00	1.25	2.53
Insolation (S⊕)	1.00	5.99	0.037

Star Catalogue Identifiers

TIC

TIC 164832454

Gaia DR2

Gaia DR2 2107186134525176960

Gaia DR3

Gaia DR3 2107186134525176960

System

Kepler-504

Percentile among Super-Earth cohort

Radius 1.590 R⊕ · percentile 49 / cohort 1176

Mass 3.150 M⊕ · percentile 45 / cohort 1176

Orbital period 9.55 d · percentile 64 / cohort 1164

Distance 99.07 pc · percentile 17 / cohort 1171

ESI 0.742 · percentile 87 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

9.549 days

Semi-major axis

0.0646 AU

Eccentricity

0.000

Inclination

89.92 °

Year Length

A year here lasts approximately 9.55 Earth days (2.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0646 AU.

Transit Fingerprint

Depth

0.183 %

Duration

1.772 h

Impact parameter b

0.031

Rp / R★

0.045119

Transit midpoint (BJD)

2,455,008.7572

Photometric dip

Transit produces a flux drop of 1,827 ppm lasting ≈ 1.77 h.

Extended Orbital Architecture

Planet / star radius ratio

0.045119

Semi-major axis / stellar radius

47.100

Impact parameter (b)

0.031

Transit mid-time (BJD)

2,455,008.7572

Angular separation (arcsec)

0.65200

Eq. Temperature

374K

(101 °C)

Insolation (S⊕)

5.99

Earth = 1.00

Earth Similarity (ESI)

0.742

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.

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-504

Spectral Class

M-type red dwarf

Effective Temperature

3,519 K — cooler than the Sun (5,778 K)

Estimated Age

4.17 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.330 R☉

Stellar Mass

0.330 M☉

Metallicity [Fe/H]

-0.31

Extended Stellar Properties

Surface gravity (log g)

4.940 dex

Stellar density

7.930 g/cm³

Metallicity ratio

[Fe/H]

Distance

99.07 parsec

Light-years 323.12 ly

V-band magnitude

15.14 mag

Voyager-speed travel 5,698,200 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

10.065 mas

Total Proper Motion

22.472 mas/yr

PM Right Ascension

19.18 mas/yr

PM Declination

-11.70 mas/yr

Galactic Cartesian (pc)

x = 0.179 · y = -0.672 · z = 0.719

Equatorial (J2000)

RA 284.92196° · Dec 45.97233°

Galactic ℓ, b

76.092° · 17.794°

Ecliptic λ, β

298.457° · 67.943°

HTM-20 index

-1371031044