Key parameters at a glance

A radius of 2.21 Earth radii
A mass of 5.52 Earth masses
Surface gravity around 1.13 g
An orbital period of 33.026 days
Semi-major axis 0.2049 AU
Equilibrium temperature 564 K (291 °C)
Distance from Earth 5,575.31 light-years
Earth Similarity Index 0.466
Travel time at Voyager 1 speed 98,320,598 years

Kepler-1980 b Planet Profile

Physical Specs

Radius

2.21 R⊕

Radius (Jupiter)

0.197 R♃

Mass

5.52 M⊕

Mass (Jupiter)

0.017 M♃

Density

2.81 g/cm³

Surface Gravity

1.13 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.466

HZ Position Inner

Controversial No

Discovery

Year 2023

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1658of 1978

top 83.8%

This planet

2.21R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

K2-335 b 2.21 R⊕ OGLE-2005-BLG-390L b 2.21 R⊕ K2-275 c 2.21 R⊕

Metric	Earth	Kepler-1980 b	Jupiter
Radius (R⊕)	1.00	2.21	11.21
Mass (M⊕)	1.00	5.52	317.83
Density (g/cm³)	5.51	2.81	1.33
Surface Gravity (g)	1.00	1.13	2.53
Insolation (S⊕)	1.00	23.95	0.037

Star Catalogue Identifiers

TIC

TIC 139036617

Gaia DR2

Gaia DR2 2052139123549626240

Gaia DR3

Gaia DR3 2052139123549626240

System

Kepler-1980

Percentile among Sub-Neptune cohort

Radius 2.210 R⊕ · percentile 16 / cohort 1978

Mass 5.520 M⊕ · percentile 16 / cohort 1978

Orbital period 33.03 d · percentile 76 / cohort 1946

Distance 1,709.40 pc · percentile 95 / cohort 1975

ESI 0.466 · percentile 65 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

33.026 days

Semi-major axis

0.2049 AU

Eccentricity

0.000

Inclination

89.94 °

Year Length

A year here lasts approximately 33.03 Earth days (9.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2049 AU.

Transit Fingerprint

Depth

0.051 %

Duration

6.032 h

Impact parameter b

0.044

Rp / R★

0.020422

Transit midpoint (BJD)

2,454,994.0100

Photometric dip

Transit produces a flux drop of 507 ppm lasting ≈ 6.03 h.

Extended Orbital Architecture

Planet / star radius ratio

0.020422

Semi-major axis / stellar radius

42.650

Impact parameter (b)

0.044

Transit mid-time (BJD)

2,454,994.0100

Angular separation (arcsec)

0.12000

Eq. Temperature

564K

(291 °C)

Insolation (S⊕)

23.95

Earth = 1.00

Earth Similarity (ESI)

0.466

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

Valizadegan et al. 2023

Instrument

Kepler CCD Array

Publication

2023-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2023 at Kepler (12 shown).

Kepler-1126 c · Super-Earth Kepler-2000 c · Super-Earth Kepler-1052 c · Sub-Neptune Kepler-311 d · Sub-Neptune Kepler-1996 c · Sub-Neptune Kepler-1162 c · Super-Earth Kepler-1996 b · Sub-Neptune Kepler-1610 c · Sub-Neptune Kepler-1801 c · Sub-Neptune Kepler-1995 b · Neptune-like Kepler-1992 b · Rocky Terrestrial Kepler-1986 b · Super-Earth

Host System: Kepler-1980

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,819 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.990 R☉

Stellar Mass

1.049 M☉

Metallicity [Fe/H]

0.14

Extended Stellar Properties

Surface gravity (log g)

4.468 dex

Stellar density

1.345 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,709.40 parsec

Light-years 5,575.31 ly

V-band magnitude

15.91 mag

Voyager-speed travel 98,320,598 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.560 mas

Total Proper Motion

5.710 mas/yr

PM Right Ascension

-2.45 mas/yr

PM Declination

-5.16 mas/yr

Galactic Cartesian (pc)

x = 0.332 · y = -0.707 · z = 0.624

Equatorial (J2000)

RA 295.16721° · Dec 38.63704°

Galactic ℓ, b

72.544° · 7.847°

Ecliptic λ, β

309.685° · 58.658°

HTM-20 index

-1889319547