Key parameters at a glance

A radius of 7.00 Earth radii
A mass of 39.10 Earth masses
Surface gravity around 0.80 g
An orbital period of 4.147 days
Semi-major axis 0.0502 AU
Equilibrium temperature 1,258 K (985 °C)
Distance from Earth 3,325.65 light-years
Earth Similarity Index 0.124
Travel time at Voyager 1 speed 58,647,828 years

Kepler-546 b Planet Profile

Physical Specs

Radius

7.00 R⊕

Radius (Jupiter)

0.625 R♃

Mass

39.10 M⊕

Mass (Jupiter)

0.123 M♃

Density

0.63 g/cm³

Surface Gravity

0.80 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.124

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

#202of 574

top 35.0%

This planet

7.00R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

K2-141 c 7.00 R⊕ Kepler-18 d 6.98 R⊕ KMT-2023-BLG-0735L b 6.97 R⊕

Metric	Earth	Kepler-546 b	Jupiter
Radius (R⊕)	1.00	7.00	11.21
Mass (M⊕)	1.00	39.10	317.83
Density (g/cm³)	5.51	0.63	1.33
Surface Gravity (g)	1.00	0.80	2.53
Insolation (S⊕)	1.00	690.13	0.037

Star Catalogue Identifiers

TIC

TIC 237158650

Gaia DR2

Gaia DR2 2104353590712705152

Gaia DR3

Gaia DR3 2104353590712705152

System

Kepler-546

Percentile among Neptune-like cohort

Radius 7.000 R⊕ · percentile 65 / cohort 574

Mass 39.100 M⊕ · percentile 62 / cohort 574

Orbital period 4.15 d · percentile 14 / cohort 524

Distance 1,019.65 pc · percentile 74 / cohort 572

ESI 0.124 · percentile 6 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

4.147 days

Semi-major axis

0.0502 AU

Eccentricity

0.000

Inclination

88.70 °

Year Length

A year here lasts approximately 4.15 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0502 AU.

Transit Fingerprint

Depth

0.368 %

Duration

2.897 h

Impact parameter b

0.500

Rp / R★

0.056443

Transit midpoint (BJD)

2,455,003.3261

Photometric dip

Transit produces a flux drop of 3,681 ppm lasting ≈ 2.90 h.

Extended Orbital Architecture

Planet / star radius ratio

0.056443

Semi-major axis / stellar radius

11.567

Impact parameter (b)

0.500

Transit mid-time (BJD)

2,455,003.3261

Angular separation (arcsec)

0.04920

Eq. Temperature

1,258K

(985 °C)

Insolation (S⊕)

690.13

Earth = 1.00

Earth Similarity (ESI)

0.124

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-546

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,967 K — hotter than the Sun (5,778 K)

Estimated Age

3.31 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.150 R☉

Stellar Mass

1.110 M☉

Metallicity [Fe/H]

0.14

Extended Stellar Properties

Surface gravity (log g)

4.360 dex

Stellar density

1.702 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,019.65 parsec

Light-years 3,325.65 ly

V-band magnitude

14.33 mag

Voyager-speed travel 58,647,828 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.952 mas

Total Proper Motion

14.946 mas/yr

PM Right Ascension

-4.26 mas/yr

PM Declination

-14.33 mas/yr

Galactic Cartesian (pc)

x = 0.173 · y = -0.735 · z = 0.656

Equatorial (J2000)

RA 283.25757° · Dec 40.99041°

Galactic ℓ, b

70.764° · 17.123°

Ecliptic λ, β

292.728° · 63.387°

HTM-20 index

-847078815