Key parameters at a glance

A radius of 2.57 Earth radii
A mass of 7.13 Earth masses
Surface gravity around 1.08 g
An orbital period of 214.887 days
Semi-major axis 0.6687 AU
Equilibrium temperature 286 K (13 °C)
Distance from Earth 2,619.20 light-years
Earth Similarity Index 0.757
Travel time at Voyager 1 speed 46,189,630 years

Kepler-1549 b Planet Profile

Physical Specs

Radius

2.57 R⊕

Radius (Jupiter)

0.229 R♃

Mass

7.13 M⊕

Mass (Jupiter)

0.022 M♃

Density

2.31 g/cm³

Surface Gravity

1.08 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.757

HZ Position Habitable

Controversial No

Discovery

Year 2016

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1074of 1978

top 54.2%

This planet

2.57R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-313 c 2.57 R⊕ Kepler-549 b 2.57 R⊕ Kepler-245 b 2.57 R⊕

Metric	Earth	Kepler-1549 b	Jupiter
Radius (R⊕)	1.00	2.57	11.21
Mass (M⊕)	1.00	7.13	317.83
Density (g/cm³)	5.51	2.31	1.33
Surface Gravity (g)	1.00	1.08	2.53
Insolation (S⊕)	1.00	1.18	0.037

Star Catalogue Identifiers

TIC

TIC 120692095

Gaia DR2

Gaia DR2 2100070958564495488

Gaia DR3

Gaia DR3 2100070958564495488

System

Kepler-1549

Percentile among Sub-Neptune cohort

Radius 2.570 R⊕ · percentile 45 / cohort 1978

Mass 7.130 M⊕ · percentile 42 / cohort 1978

Orbital period 214.89 d · percentile 98 / cohort 1946

Distance 803.05 pc · percentile 66 / cohort 1975

ESI 0.757 · percentile 97 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

214.887 days

Semi-major axis

0.6687 AU

Eccentricity

0.000

Inclination

89.99 °

Year Length

A year here lasts approximately 214.89 Earth days (58.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.6687 AU.

Transit Fingerprint

Depth

0.076 %

Duration

10.110 h

Impact parameter b

0.017

Rp / R★

0.028331

Transit midpoint (BJD)

2,455,046.3870

Photometric dip

Transit produces a flux drop of 759 ppm lasting ≈ 10.11 h.

Extended Orbital Architecture

Planet / star radius ratio

0.028331

Semi-major axis / stellar radius

166.950

Impact parameter (b)

0.017

Transit mid-time (BJD)

2,455,046.3870

Angular separation (arcsec)

0.83300

Eq. Temperature

286K

(13 °C)

Insolation (S⊕)

1.18

Earth = 1.00

Earth Similarity (ESI)

0.757

0 = alien, 1 = Earth-identical

Within the conservative habitable zone — liquid water is physically possible with adequate atmospheric pressure.

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-1549

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,324 K — cooler than the Sun (5,778 K)

Estimated Age

4.79 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.840 R☉

Stellar Mass

0.880 M☉

Metallicity [Fe/H]

0.02

Extended Stellar Properties

Surface gravity (log g)

4.540 dex

Stellar density

1.906 g/cm³

Metallicity ratio

[Fe/H]

Distance

803.05 parsec

Light-years 2,619.20 ly

V-band magnitude

15.35 mag

Voyager-speed travel 46,189,630 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

1.217 mas

Total Proper Motion

2.568 mas/yr

PM Right Ascension

0.72 mas/yr

PM Declination

-2.46 mas/yr

Galactic Cartesian (pc)

x = 0.215 · y = -0.746 · z = 0.631

Equatorial (J2000)

RA 286.05244° · Dec 39.09603°

Galactic ℓ, b

69.792° · 14.423°

Ecliptic λ, β

296.337° · 61.076°

HTM-20 index

544364939