Key parameters at a glance

A radius of 9.96 Earth radii
A mass of 1,462.01 Earth masses
Surface gravity around 14.74 g
An orbital period of 737.113 days
Semi-major axis 1.6400 AU
Distance from Earth 5,436.01 light-years
Earth Similarity Index 0.319
Travel time at Voyager 1 speed 95,864,021 years

Kepler-1708 b Planet Profile

Physical Specs

Radius

9.96 R⊕

Radius (Jupiter)

0.889 R♃

Mass

1,462.01 M⊕

Mass (Jupiter)

4.600 M♃

Density

— g/cm³

Surface Gravity

14.74 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.319

HZ Position Habitable

Controversial No

Discovery

Year 2021

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#6of 574

top 0.9%

This planet

9.96R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

TOI-2328 b 9.98 R⊕ Lupus-TR-3 b 9.98 R⊕ WASP-130 b 9.98 R⊕

Metric	Earth	Kepler-1708 b	Jupiter
Radius (R⊕)	1.00	9.96	11.21
Mass (M⊕)	1.00	1,462.01	317.83
Density (g/cm³)	5.51	—	1.33
Surface Gravity (g)	1.00	14.74	2.53
Insolation (S⊕)	1.00	0.56	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	1,462.011 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 272716898

Gaia DR2

Gaia DR2 2078801971283008128

Gaia DR3

Gaia DR3 2078801971283008128

System

Kepler-1708

Percentile among Neptune-like cohort

Radius 9.960 R⊕ · percentile 99 / cohort 574

Mass 1,462.011 M⊕ · percentile 99 / cohort 574

Orbital period 737.11 d · percentile 97 / cohort 524

Distance 1,666.69 pc · percentile 87 / cohort 572

ESI 0.319 · percentile 55 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

737.113 days

Semi-major axis

1.6400 AU

Eccentricity

0.400

Inclination

— °

Year Length

A year here lasts about 2.02 Earth years on a highly eccentric trajectory at a mean orbital distance of 1.6400 AU.

Transit Fingerprint

Impact parameter b

0.370

Rp / R★

0.081800

Extended Orbital Architecture

Planet / star radius ratio

0.081800

Semi-major axis / stellar radius

317.900

Impact parameter (b)

0.370

Angular separation (arcsec)

0.98400

Eq. Temperature

—

Insolation (S⊕)

0.56

Earth = 1.00

Earth Similarity (ESI)

0.319

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Kipping et al. 2022

Instrument

Kepler CCD Array

Publication

2022-01

Observation locale

Space

Discovery cohort

Planets confirmed in 2021 at Kepler (12 shown).

Kepler-1816 b · Super-Earth Kepler-1705 c · Sub-Neptune Kepler-1948 b · Rocky Terrestrial Kepler-196 d · Sub-Neptune Kepler-1853 b · Super-Earth Kepler-1840 b · Sub-Neptune Kepler-1881 b · Sub-Neptune Kepler-1858 b · Sub-Neptune Kepler-1874 b · Sub-Neptune Kepler-1802 c · Sub-Neptune Kepler-1749 b · Super-Earth Kepler-1849 b · Sub-Neptune

Host System: Kepler-1708

Spectral Class

F-type yellow-white

Effective Temperature

6,157 K — hotter than the Sun (5,778 K)

Estimated Age

3.16 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.117 R☉

Stellar Mass

1.088 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.370 dex

Stellar density

1.100 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,666.69 parsec

Light-years 5,436.01 ly

V-band magnitude

15.82 mag

Voyager-speed travel 95,864,021 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.573 mas

Total Proper Motion

5.064 mas/yr

PM Right Ascension

-0.77 mas/yr

PM Declination

-5.01 mas/yr

Galactic Cartesian (pc)

x = 0.327 · y = -0.646 · z = 0.690

Equatorial (J2000)

RA 296.82411° · Dec 43.62482°

Galactic ℓ, b

77.571° · 9.156°

Ecliptic λ, β

315.744° · 62.868°

HTM-20 index

1532114528