Key parameters at a glance

A radius of 1.28 Earth radii
A mass of 2.19 Earth masses
Surface gravity around 1.33 g
An orbital period of 4.942 days
Distance from Earth 712.25 light-years
Earth Similarity Index 0.938
Travel time at Voyager 1 speed 12,560,465 years

1 sibling around K2-407

K2-407 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
K2-407 b this	Super-Earth	1.28	2.19	4.942	—	2022
K2-407 c	Super-Earth	1.36	2.42	9.225	—	2022

K2-407 b Planet Profile

Physical Specs

Radius

1.28 R⊕

Radius (Jupiter)

0.114 R♃

Mass

2.19 M⊕

Mass (Jupiter)

0.007 M♃

Density

5.70 g/cm³

Surface Gravity

1.33 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.938

HZ Position Unknown

Controversial No

Discovery

Year 2022

Method Transit

Facility K2

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1115of 1176

top 94.7%

This planet

1.28R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

HD 158259 b 1.28 R⊕ Kepler-1953 b 1.29 R⊕ TOI-431 b 1.28 R⊕

Metric	Earth	K2-407 b	Jupiter
Radius (R⊕)	1.00	1.28	11.21
Mass (M⊕)	1.00	2.19	317.83
Density (g/cm³)	5.51	5.70	1.33
Surface Gravity (g)	1.00	1.33	2.53
Insolation (S⊕)	1.00	—	0.037

Star Catalogue Identifiers

TIC

TIC 422685031

Gaia DR2

Gaia DR2 6239581123010344960

Gaia DR3

Gaia DR3 6239581123010344960

System

K2-407

Percentile among Super-Earth cohort

Radius 1.283 R⊕ · percentile 5 / cohort 1176

Mass 2.190 M⊕ · percentile 6 / cohort 1176

Orbital period 4.94 d · percentile 40 / cohort 1164

Distance 218.38 pc · percentile 26 / cohort 1171

ESI 0.938 · percentile 99 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

4.942 days

Semi-major axis

— AU

Eccentricity

—

Inclination

— °

Year Length

A year here lasts approximately 4.94 Earth days (1.4% of a terrestrial year).

Transit Fingerprint

Duration

2.900 h

Impact parameter b

0.309

Rp / R★

0.012700

Transit midpoint (BJD)

2,457,993.5101

Extended Orbital Architecture

Planet / star radius ratio

0.012700

Semi-major axis / stellar radius

12.770

Impact parameter (b)

0.309

Transit mid-time (BJD)

2,457,993.5101

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.938

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Christiansen et al. 2022

Instrument

Kepler CCD Array

Publication

2022-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2022 at K2 (12 shown).

K2-411 b · Rocky Terrestrial K2-381 b · Rocky Terrestrial K2-384 b · Rocky Terrestrial K2-400 b · Rocky Terrestrial K2-384 c · Rocky Terrestrial K2-369 b · Super-Earth K2-414 b · Rocky Terrestrial K2-368 b · Super-Earth K2-413 c · Rocky Terrestrial K2-384 e · Super-Earth K2-407 c · Super-Earth K2-368 c · Super-Earth

Host System: K2-407

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,563 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.927 R☉

Stellar Mass

0.881 M☉

Metallicity [Fe/H]

0.01

Extended Stellar Properties

Surface gravity (log g)

4.450 dex

Stellar density

1.581 g/cm³

Metallicity ratio

[Fe/H]

Distance

218.38 parsec

Light-years 712.25 ly

V-band magnitude

11.97 mag

Voyager-speed travel 12,560,465 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

4.551 mas

Total Proper Motion

42.753 mas/yr

PM Right Ascension

-42.42 mas/yr

PM Declination

5.33 mas/yr

Galactic Cartesian (pc)

x = -0.560 · y = -0.731 · z = -0.391

Equatorial (J2000)

RA 232.55526° · Dec -23.00674°

Galactic ℓ, b

344.165° · 26.879°

Ecliptic λ, β

235.876° · -3.893°

HTM-20 index

1504482913