Key parameters at a glance

A radius of 3.13 Earth radii
A mass of 9.96 Earth masses
Surface gravity around 1.02 g
An orbital period of 19.597 days
Semi-major axis 0.1366 AU
Equilibrium temperature 671 K (398 °C)
Distance from Earth 3,039.63 light-years
Earth Similarity Index 0.345
Travel time at Voyager 1 speed 53,603,879 years

Kepler-1546 b Planet Profile

Physical Specs

Radius

3.13 R⊕

Radius (Jupiter)

0.279 R♃

Mass

9.96 M⊕

Mass (Jupiter)

0.031 M♃

Density

1.78 g/cm³

Surface Gravity

1.02 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.345

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

#406of 1978

top 20.5%

This planet

3.13R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-146 c 3.13 R⊕ Kepler-104 c 3.13 R⊕ Kepler-1600 b 3.13 R⊕

Metric	Earth	Kepler-1546 b	Jupiter
Radius (R⊕)	1.00	3.13	11.21
Mass (M⊕)	1.00	9.96	317.83
Density (g/cm³)	5.51	1.78	1.33
Surface Gravity (g)	1.00	1.02	2.53
Insolation (S⊕)	1.00	36.30	0.037

Star Catalogue Identifiers

TIC

TIC 169466684

Gaia DR2

Gaia DR2 2076880231116348672

Gaia DR3

Gaia DR3 2076880231116348672

System

Kepler-1546

Percentile among Sub-Neptune cohort

Radius 3.130 R⊕ · percentile 79 / cohort 1978

Mass 9.960 M⊕ · percentile 72 / cohort 1978

Orbital period 19.60 d · percentile 61 / cohort 1946

Distance 931.96 pc · percentile 74 / cohort 1975

ESI 0.345 · percentile 39 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

19.597 days

Semi-major axis

0.1366 AU

Eccentricity

0.000

Inclination

87.32 °

Year Length

A year here lasts approximately 19.60 Earth days (5.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1366 AU.

Transit Fingerprint

Depth

0.101 %

Duration

4.069 h

Impact parameter b

0.462

Rp / R★

0.030586

Transit midpoint (BJD)

2,454,968.2547

Photometric dip

Transit produces a flux drop of 1,014 ppm lasting ≈ 4.07 h.

Extended Orbital Architecture

Planet / star radius ratio

0.030586

Semi-major axis / stellar radius

18.580

Impact parameter (b)

0.462

Transit mid-time (BJD)

2,454,968.2547

Angular separation (arcsec)

0.14700

Eq. Temperature

671K

(398 °C)

Insolation (S⊕)

36.30

Earth = 1.00

Earth Similarity (ESI)

0.345

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-1546

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,623 K — cooler than the Sun (5,778 K)

Estimated Age

3.72 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.930 R☉

Stellar Mass

0.950 M☉

Metallicity [Fe/H]

0.01

Extended Stellar Properties

Surface gravity (log g)

4.480 dex

Stellar density

1.920 g/cm³

Metallicity ratio

[Fe/H]

Distance

931.96 parsec

Light-years 3,039.63 ly

V-band magnitude

15.60 mag

Voyager-speed travel 53,603,879 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.045 mas

Total Proper Motion

5.067 mas/yr

PM Right Ascension

-4.12 mas/yr

PM Declination

-2.95 mas/yr

Galactic Cartesian (pc)

x = 0.347 · y = -0.663 · z = 0.663

Equatorial (J2000)

RA 297.58392° · Dec 41.54120°

Galactic ℓ, b

76.012° · 7.647°

Ecliptic λ, β

315.138° · 60.730°

HTM-20 index

-869173740