Key parameters at a glance

A radius of 1.62 Earth radii
A mass of 3.25 Earth masses
Surface gravity around 1.24 g
An orbital period of 5.605 days
Semi-major axis 0.0588 AU
Equilibrium temperature 866 K (593 °C)
Distance from Earth 3,400.01 light-years
Earth Similarity Index 0.340
Travel time at Voyager 1 speed 59,959,230 years

Kepler-1961 b Planet Profile

Physical Specs

Radius

1.62 R⊕

Radius (Jupiter)

0.144 R♃

Mass

3.25 M⊕

Mass (Jupiter)

0.010 M♃

Density

4.21 g/cm³

Surface Gravity

1.24 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.340

HZ Position Inner

Controversial No

Discovery

Year 2021

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#546of 1176

top 46.3%

This planet

1.62R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

K2-58 c 1.62 R⊕ TOI-1416 b 1.62 R⊕ Kepler-1400 b 1.62 R⊕

Metric	Earth	Kepler-1961 b	Jupiter
Radius (R⊕)	1.00	1.62	11.21
Mass (M⊕)	1.00	3.25	317.83
Density (g/cm³)	5.51	4.21	1.33
Surface Gravity (g)	1.00	1.24	2.53
Insolation (S⊕)	1.00	132.98	0.037

Star Catalogue Identifiers

TIC

TIC 120821730

Gaia DR2

Gaia DR2 2100656826462352128

Gaia DR3

Gaia DR3 2100656826462352128

System

Kepler-1961

Percentile among Super-Earth cohort

Radius 1.619 R⊕ · percentile 54 / cohort 1176

Mass 3.250 M⊕ · percentile 49 / cohort 1176

Orbital period 5.60 d · percentile 44 / cohort 1164

Distance 1,042.45 pc · percentile 83 / cohort 1171

ESI 0.340 · percentile 48 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

5.605 days

Semi-major axis

0.0588 AU

Eccentricity

0.000

Inclination

89.14 °

Year Length

A year here lasts approximately 5.60 Earth days (1.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0588 AU.

Transit Fingerprint

Depth

0.021 %

Duration

2.885 h

Impact parameter b

0.177

Rp / R★

0.013128

Transit midpoint (BJD)

2,454,964.6286

Photometric dip

Transit produces a flux drop of 210 ppm lasting ≈ 2.89 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013128

Semi-major axis / stellar radius

15.140

Impact parameter (b)

0.177

Transit mid-time (BJD)

2,454,964.6286

Angular separation (arcsec)

0.05640

Eq. Temperature

866K

(593 °C)

Insolation (S⊕)

132.98

Earth = 1.00

Earth Similarity (ESI)

0.340

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. 2022

Instrument

Kepler CCD Array

Publication

2022-02

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-1961

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,401 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.777 R☉

Stellar Mass

0.871 M☉

Metallicity [Fe/H]

-0.16

Extended Stellar Properties

Surface gravity (log g)

4.593 dex

Stellar density

1.908 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,042.45 parsec

Light-years 3,400.01 ly

V-band magnitude

15.81 mag

Voyager-speed travel 59,959,230 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

0.931 mas

Total Proper Motion

11.328 mas/yr

PM Right Ascension

-7.55 mas/yr

PM Declination

-8.44 mas/yr

Galactic Cartesian (pc)

x = 0.216 · y = -0.739 · z = 0.639

Equatorial (J2000)

RA 286.33008° · Dec 39.68313°

Galactic ℓ, b

70.436° · 14.460°

Ecliptic λ, β

297.055° · 61.597°

HTM-20 index

-1863867395