Key parameters at a glance

A radius of 2.73 Earth radii
A mass of 7.90 Earth masses
Surface gravity around 1.06 g
An orbital period of 6.883 days
Semi-major axis 0.0744 AU
Equilibrium temperature 1,080 K (807 °C)
Distance from Earth 745.07 light-years
Earth Similarity Index 0.222
Travel time at Voyager 1 speed 13,139,265 years

Kepler-506 b Planet Profile

Physical Specs

Radius

2.73 R⊕

Radius (Jupiter)

0.244 R♃

Mass

7.90 M⊕

Mass (Jupiter)

0.025 M♃

Density

2.13 g/cm³

Surface Gravity

1.06 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.222

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

#823of 1978

top 41.6%

This planet

2.73R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-385 b 2.73 R⊕ Kepler-436 b 2.73 R⊕ Kepler-221 d 2.73 R⊕

Metric	Earth	Kepler-506 b	Jupiter
Radius (R⊕)	1.00	2.73	11.21
Mass (M⊕)	1.00	7.90	317.83
Density (g/cm³)	5.51	2.13	1.33
Surface Gravity (g)	1.00	1.06	2.53
Insolation (S⊕)	1.00	330.55	0.037

Star Catalogue Identifiers

TIC

TIC 120317234

Gaia DR2

Gaia DR2 2103452266056715392

Gaia DR3

Gaia DR3 2103452266056715392

System

Kepler-506

Percentile among Sub-Neptune cohort

Radius 2.730 R⊕ · percentile 58 / cohort 1978

Mass 7.900 M⊕ · percentile 53 / cohort 1978

Orbital period 6.88 d · percentile 21 / cohort 1946

Distance 228.44 pc · percentile 31 / cohort 1975

ESI 0.222 · percentile 10 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

6.883 days

Semi-major axis

0.0744 AU

Eccentricity

0.000

Inclination

89.82 °

Year Length

A year here lasts approximately 6.88 Earth days (1.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0744 AU.

Transit Fingerprint

Depth

0.050 %

Duration

2.065 h

Impact parameter b

0.023

Rp / R★

0.020603

Transit midpoint (BJD)

2,455,005.6626

Photometric dip

Transit produces a flux drop of 503 ppm lasting ≈ 2.07 h.

Extended Orbital Architecture

Planet / star radius ratio

0.020603

Semi-major axis / stellar radius

25.800

Impact parameter (b)

0.023

Transit mid-time (BJD)

2,455,005.6626

Angular separation (arcsec)

0.32600

Eq. Temperature

1,080K

(807 °C)

Insolation (S⊕)

330.55

Earth = 1.00

Earth Similarity (ESI)

0.222

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-506

Spectral Class

F-type yellow-white

Effective Temperature

6,236 K — hotter than the Sun (5,778 K)

Estimated Age

1.74 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.190 R☉

Stellar Mass

1.190 M☉

Metallicity [Fe/H]

0.09

Extended Stellar Properties

Surface gravity (log g)

4.360 dex

Stellar density

0.690 g/cm³

Systemic radial velocity

-10.92 km/s

Metallicity ratio

[Fe/H]

Distance

228.44 parsec

Light-years 745.07 ly

V-band magnitude

11.09 mag

Voyager-speed travel 13,139,265 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

4.349 mas

Total Proper Motion

2.631 mas/yr

PM Right Ascension

1.13 mas/yr

PM Declination

-2.37 mas/yr

Galactic Cartesian (pc)

x = 0.191 · y = -0.733 · z = 0.652

Equatorial (J2000)

RA 284.63519° · Dec 40.71983°

Galactic ℓ, b

70.906° · 16.055°

Ecliptic λ, β

294.855° · 62.902°

HTM-20 index

1760854463