Key parameters at a glance

A radius of 1.58 Earth radii
A mass of 3.12 Earth masses
Surface gravity around 1.25 g
An orbital period of 12.648 days
Semi-major axis 0.1014 AU
Distance from Earth 235.48 light-years
Earth Similarity Index 0.873
Travel time at Voyager 1 speed 4,152,771 years

K2-65 b Planet Profile

Physical Specs

Radius

1.58 R⊕

Radius (Jupiter)

0.141 R♃

Mass

3.12 M⊕

Mass (Jupiter)

0.010 M♃

Density

4.35 g/cm³

Surface Gravity

1.25 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.873

HZ Position Inner

Controversial No

Discovery

Year 2016

Method Transit

Facility K2

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#603of 1176

top 51.2%

This planet

1.58R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-111 b 1.58 R⊕ Kepler-445 b 1.58 R⊕ Kepler-386 c 1.58 R⊕

Metric	Earth	K2-65 b	Jupiter
Radius (R⊕)	1.00	1.58	11.21
Mass (M⊕)	1.00	3.12	317.83
Density (g/cm³)	5.51	4.35	1.33
Surface Gravity (g)	1.00	1.25	2.53
Insolation (S⊕)	1.00	45.00	0.037

Star Catalogue Identifiers

HIP

HIP 109656

TIC

TIC 38200266

System

K2-65

Percentile among Super-Earth cohort

Radius 1.580 R⊕ · percentile 48 / cohort 1176

Mass 3.120 M⊕ · percentile 44 / cohort 1176

Orbital period 12.65 d · percentile 71 / cohort 1164

Distance 72.20 pc · percentile 14 / cohort 1171

ESI 0.873 · percentile 95 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

12.648 days

Semi-major axis

0.1014 AU

Eccentricity

—

Inclination

89.15 °

Year Length

A year here lasts approximately 12.65 Earth days (3.5% of a terrestrial year) at a mean orbital distance of 0.1014 AU.

Transit Fingerprint

Depth

0.039 %

Duration

3.430 h

Impact parameter b

0.610

Rp / R★

0.017300

Transit midpoint (BJD)

2,456,986.3303

Photometric dip

Transit produces a flux drop of 391 ppm lasting ≈ 3.43 h.

Extended Orbital Architecture

Planet / star radius ratio

0.017300

Semi-major axis / stellar radius

28.897

Impact parameter (b)

0.610

Transit mid-time (BJD)

2,456,986.3303

Angular separation (arcsec)

1.40000

Eq. Temperature

—

Insolation (S⊕)

45.00

Earth = 1.00

Earth Similarity (ESI)

0.873

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Crossfield et al. 2016

Instrument

Kepler CCD Array

Publication

2016-09

Observation locale

Space

Discovery cohort

Planets confirmed in 2016 at K2 (12 shown).

K2-72 d · Rocky Terrestrial K2-72 b · Rocky Terrestrial K2-91 b · Rocky Terrestrial K2-72 c · Rocky Terrestrial K2-102 b · Super-Earth K2-90 c · Super-Earth K2-72 e · Super-Earth K2-83 b · Rocky Terrestrial K2-88 b · Rocky Terrestrial K2-80 c · Super-Earth K2-83 c · Super-Earth K2-68 b · Super-Earth

Host System: K2-65

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,213 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.840 R☉

Stellar Mass

0.870 M☉

Metallicity [Fe/H]

-0.34

Distance

72.20 parsec

Light-years 235.48 ly

V-band magnitude

10.71 mag

Voyager-speed travel 4,152,771 yr

Multi-band Host Photometry — 7 bands

Astrometric Data

Parallax

15.593 mas

Total Proper Motion

256.978 mas/yr

PM Right Ascension

180.40 mas/yr

PM Declination

-183.01 mas/yr

Galactic Cartesian (pc)

x = 0.877 · y = -0.443 · z = -0.190

Equatorial (J2000)

RA 333.21252° · Dec -10.92614°

Galactic ℓ, b

48.628° · -49.402°

Ecliptic λ, β

331.220° · 0.121°

HTM-20 index

864881118