Key parameters at a glance

A radius of 2.76 Earth radii
A mass of 8.05 Earth masses
Surface gravity around 1.06 g
An orbital period of 9.843 days
Semi-major axis 0.0918 AU
Equilibrium temperature 801 K (528 °C)
Distance from Earth 3,511.00 light-years
Earth Similarity Index 0.304
Travel time at Voyager 1 speed 61,916,554 years

Kepler-1944 b Planet Profile

Physical Specs

Radius

2.76 R⊕

Radius (Jupiter)

0.246 R♃

Mass

8.05 M⊕

Mass (Jupiter)

0.025 M♃

Density

2.10 g/cm³

Surface Gravity

1.06 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.304

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

#801of 1978

top 40.4%

This planet

2.76R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1458 b 2.76 R⊕ Kepler-172 e 2.76 R⊕ Kepler-819 b 2.76 R⊕

Metric	Earth	Kepler-1944 b	Jupiter
Radius (R⊕)	1.00	2.76	11.21
Mass (M⊕)	1.00	8.05	317.83
Density (g/cm³)	5.51	2.10	1.33
Surface Gravity (g)	1.00	1.06	2.53
Insolation (S⊕)	1.00	97.62	0.037

Star Catalogue Identifiers

TIC

TIC 184554636

Gaia DR2

Gaia DR2 2073229474559368832

Gaia DR3

Gaia DR3 2073229474559368832

System

Kepler-1944

Percentile among Sub-Neptune cohort

Radius 2.760 R⊕ · percentile 60 / cohort 1978

Mass 8.050 M⊕ · percentile 55 / cohort 1978

Orbital period 9.84 d · percentile 33 / cohort 1946

Distance 1,076.48 pc · percentile 83 / cohort 1975

ESI 0.304 · percentile 29 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

9.843 days

Semi-major axis

0.0918 AU

Eccentricity

0.000

Inclination

89.71 °

Year Length

A year here lasts approximately 9.84 Earth days (2.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0918 AU.

Transit Fingerprint

Depth

0.063 %

Duration

1.567 h

Impact parameter b

0.234

Rp / R★

0.022683

Transit midpoint (BJD)

2,454,967.0216

Photometric dip

Transit produces a flux drop of 626 ppm lasting ≈ 1.57 h.

Extended Orbital Architecture

Planet / star radius ratio

0.022683

Semi-major axis / stellar radius

48.590

Impact parameter (b)

0.234

Transit mid-time (BJD)

2,454,967.0216

Angular separation (arcsec)

0.08530

Eq. Temperature

801K

(528 °C)

Insolation (S⊕)

97.62

Earth = 1.00

Earth Similarity (ESI)

0.304

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-1944

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,585 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.972 R☉

Stellar Mass

1.064 M☉

Metallicity [Fe/H]

0.48

Extended Stellar Properties

Surface gravity (log g)

4.490 dex

Stellar density

19.932 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,076.48 parsec

Light-years 3,511.00 ly

V-band magnitude

15.58 mag

Voyager-speed travel 61,916,554 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.901 mas

Total Proper Motion

12.811 mas/yr

PM Right Ascension

0.77 mas/yr

PM Declination

-12.79 mas/yr

Galactic Cartesian (pc)

x = 0.346 · y = -0.694 · z = 0.632

Equatorial (J2000)

RA 296.51050° · Dec 39.17326°

Galactic ℓ, b

73.528° · 7.192°

Ecliptic λ, β

311.929° · 58.814°

HTM-20 index

-1177638966