Key parameters at a glance

A radius of 1.23 Earth radii
A mass of 2.04 Earth masses
Surface gravity around 1.35 g
An orbital period of 5.942 days
Semi-major axis 0.0590 AU
Equilibrium temperature 797 K (524 °C)
Distance from Earth 1,497.30 light-years
Earth Similarity Index 0.393
Travel time at Voyager 1 speed 26,404,953 years
Almost certainly tidally locked to its host star given the close orbit

Kepler-1481 b Planet Profile

Physical Specs

Radius

1.23 R⊕

Radius (Jupiter)

0.110 R♃

Mass

2.04 M⊕

Mass (Jupiter)

0.006 M♃

Density

6.02 g/cm³

Surface Gravity

1.35 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.393

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

#17of 570

top 2.8%

This planet

1.23R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-252 b 1.23 R⊕ Kepler-271 b 1.23 R⊕ Kepler-197 c 1.23 R⊕

Metric	Earth	Kepler-1481 b	Jupiter
Radius (R⊕)	1.00	1.23	11.21
Mass (M⊕)	1.00	2.04	317.83
Density (g/cm³)	5.51	6.02	1.33
Surface Gravity (g)	1.00	1.35	2.53
Insolation (S⊕)	1.00	71.94	0.037

Star Catalogue Identifiers

TIC

TIC 299219860

Gaia DR2

Gaia DR2 2132652065075227648

Gaia DR3

Gaia DR3 2132652065075227648

System

Kepler-1481

Percentile among Rocky Terrestrial cohort

Radius 1.230 R⊕ · percentile 94 / cohort 570

Mass 2.040 M⊕ · percentile 86 / cohort 570

Orbital period 5.94 d · percentile 60 / cohort 567

Distance 459.08 pc · percentile 59 / cohort 566

ESI 0.393 · percentile 58 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

5.942 days

Semi-major axis

0.0590 AU

Eccentricity

0.000

Inclination

89.74 °

Year Length

A year here lasts approximately 5.94 Earth days (1.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0590 AU.

Transit Fingerprint

Depth

0.027 %

Duration

2.274 h

Impact parameter b

0.003

Rp / R★

0.014619

Transit midpoint (BJD)

2,454,966.8141

Photometric dip

Transit produces a flux drop of 273 ppm lasting ≈ 2.27 h.

Extended Orbital Architecture

Planet / star radius ratio

0.014619

Semi-major axis / stellar radius

20.270

Impact parameter (b)

0.003

Transit mid-time (BJD)

2,454,966.8141

Angular separation (arcsec)

0.12900

Eq. Temperature

797K

(524 °C)

Insolation (S⊕)

71.94

Earth = 1.00

Earth Similarity (ESI)

0.393

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.

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-1481

Spectral Class

K-type orange

Effective Temperature

4,908 K — cooler than the Sun (5,778 K)

Estimated Age

3.89 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.750 R☉

Stellar Mass

0.800 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

4.600 dex

Stellar density

4.459 g/cm³

Metallicity ratio

[Fe/H]

Distance

459.08 parsec

Light-years 1,497.30 ly

V-band magnitude

14.93 mag

Voyager-speed travel 26,404,953 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

2.150 mas

Total Proper Motion

0.536 mas/yr

PM Right Ascension

0.48 mas/yr

PM Declination

0.24 mas/yr

Galactic Cartesian (pc)

x = 0.215 · y = -0.610 · z = 0.763

Equatorial (J2000)

RA 289.43901° · Dec 49.73122°

Galactic ℓ, b

80.920° · 16.380°

Ecliptic λ, β

310.067° · 70.478°

HTM-20 index

417126868