Key parameters at a glance

A radius of 1.31 Earth radii
A mass of 2.27 Earth masses
Surface gravity around 1.32 g
An orbital period of 39.442 days
Semi-major axis 0.2346 AU
Equilibrium temperature 682 K (409 °C)
Distance from Earth 3,621.90 light-years
Earth Similarity Index 0.461
Travel time at Voyager 1 speed 63,872,153 years

Kepler-1441 b Planet Profile

Physical Specs

Radius

1.31 R⊕

Radius (Jupiter)

0.117 R♃

Mass

2.27 M⊕

Mass (Jupiter)

0.007 M♃

Density

5.55 g/cm³

Surface Gravity

1.32 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.461

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

#1072of 1176

top 91.1%

This planet

1.31R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-374 d 1.31 R⊕ Kepler-1298 b 1.31 R⊕ Kepler-62 b 1.31 R⊕

Metric	Earth	Kepler-1441 b	Jupiter
Radius (R⊕)	1.00	1.31	11.21
Mass (M⊕)	1.00	2.27	317.83
Density (g/cm³)	5.51	5.55	1.33
Surface Gravity (g)	1.00	1.32	2.53
Insolation (S⊕)	1.00	33.05	0.037

Star Catalogue Identifiers

TIC

TIC 270704515

Gaia DR2

Gaia DR2 2078201809729303040

Gaia DR3

Gaia DR3 2078201809729303040

System

Kepler-1441

Percentile among Super-Earth cohort

Radius 1.310 R⊕ · percentile 8 / cohort 1176

Mass 2.270 M⊕ · percentile 8 / cohort 1176

Orbital period 39.44 d · percentile 94 / cohort 1164

Distance 1,110.48 pc · percentile 86 / cohort 1171

ESI 0.461 · percentile 69 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

39.442 days

Semi-major axis

0.2346 AU

Eccentricity

0.000

Inclination

89.39 °

Year Length

A year here lasts approximately 39.44 Earth days (10.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2346 AU.

Transit Fingerprint

Depth

0.017 %

Duration

7.285 h

Impact parameter b

0.026

Rp / R★

0.012209

Transit midpoint (BJD)

2,455,002.1367

Photometric dip

Transit produces a flux drop of 172 ppm lasting ≈ 7.29 h.

Extended Orbital Architecture

Planet / star radius ratio

0.012209

Semi-major axis / stellar radius

41.860

Impact parameter (b)

0.026

Transit mid-time (BJD)

2,455,002.1367

Angular separation (arcsec)

0.21100

Eq. Temperature

682K

(409 °C)

Insolation (S⊕)

33.05

Earth = 1.00

Earth Similarity (ESI)

0.461

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-1441

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,802 K — hotter than the Sun (5,778 K)

Estimated Age

3.89 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.000 R☉

Stellar Mass

1.000 M☉

Metallicity [Fe/H]

0.01

Extended Stellar Properties

Surface gravity (log g)

4.450 dex

Stellar density

0.892 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,110.48 parsec

Light-years 3,621.90 ly

V-band magnitude

14.29 mag

Voyager-speed travel 63,872,153 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.872 mas

Total Proper Motion

2.587 mas/yr

PM Right Ascension

-2.51 mas/yr

PM Declination

-0.61 mas/yr

Galactic Cartesian (pc)

x = 0.294 · y = -0.668 · z = 0.684

Equatorial (J2000)

RA 293.71912° · Dec 43.12458°

Galactic ℓ, b

76.045° · 10.913°

Ecliptic λ, β

310.710° · 63.250°

HTM-20 index

-77885790