Key parameters at a glance

A radius of 2.58 Earth radii
A mass of 7.18 Earth masses
Surface gravity around 1.08 g
An orbital period of 8.314 days
Semi-major axis 0.0790 AU
Equilibrium temperature 886 K (613 °C)
Distance from Earth 2,257.51 light-years
Earth Similarity Index 0.281
Travel time at Voyager 1 speed 39,811,272 years

Kepler-461 b Planet Profile

Physical Specs

Radius

2.58 R⊕

Radius (Jupiter)

0.230 R♃

Mass

7.18 M⊕

Mass (Jupiter)

0.023 M♃

Density

2.30 g/cm³

Surface Gravity

1.08 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.281

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

#1057of 1978

top 53.4%

This planet

2.58R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

K2-73 b 2.58 R⊕ Kepler-169 f 2.58 R⊕ Kepler-1018 b 2.58 R⊕

Metric	Earth	Kepler-461 b	Jupiter
Radius (R⊕)	1.00	2.58	11.21
Mass (M⊕)	1.00	7.18	317.83
Density (g/cm³)	5.51	2.30	1.33
Surface Gravity (g)	1.00	1.08	2.53
Insolation (S⊕)	1.00	254.91	0.037

Star Catalogue Identifiers

TIC

TIC 63206513

Gaia DR2

Gaia DR2 2126801563705846528

Gaia DR3

Gaia DR3 2126801563705846528

System

Kepler-461

Percentile among Sub-Neptune cohort

Radius 2.580 R⊕ · percentile 46 / cohort 1978

Mass 7.180 M⊕ · percentile 43 / cohort 1978

Orbital period 8.31 d · percentile 27 / cohort 1946

Distance 692.16 pc · percentile 59 / cohort 1975

ESI 0.281 · percentile 23 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

8.314 days

Semi-major axis

0.0790 AU

Eccentricity

0.000

Inclination

89.99 °

Year Length

A year here lasts approximately 8.31 Earth days (2.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0790 AU.

Transit Fingerprint

Depth

0.081 %

Duration

2.993 h

Impact parameter b

0.750

Rp / R★

0.025915

Transit midpoint (BJD)

2,455,008.9916

Photometric dip

Transit produces a flux drop of 810 ppm lasting ≈ 2.99 h.

Extended Orbital Architecture

Planet / star radius ratio

0.025915

Semi-major axis / stellar radius

21.755

Impact parameter (b)

0.750

Transit mid-time (BJD)

2,455,008.9916

Angular separation (arcsec)

0.11400

Eq. Temperature

886K

(613 °C)

Insolation (S⊕)

254.91

Earth = 1.00

Earth Similarity (ESI)

0.281

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-461

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,634 K — cooler than the Sun (5,778 K)

Estimated Age

2.51 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.910 R☉

Stellar Mass

0.980 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

4.510 dex

Stellar density

0.440 g/cm³

Metallicity ratio

[Fe/H]

Distance

692.16 parsec

Light-years 2,257.51 ly

V-band magnitude

13.46 mag

Voyager-speed travel 39,811,272 yr

Multi-band Host Photometry — 15 bands

Astrometric Data

Parallax

1.416 mas

Total Proper Motion

11.300 mas/yr

PM Right Ascension

4.36 mas/yr

PM Declination

-10.43 mas/yr

Galactic Cartesian (pc)

x = 0.262 · y = -0.641 · z = 0.721

Equatorial (J2000)

RA 292.24906° · Dec 46.16479°

Galactic ℓ, b

78.356° · 13.200°

Ecliptic λ, β

311.041° · 66.462°

HTM-20 index

-826109848