Key parameters at a glance

A radius of 2.22 Earth radii
A mass of 5.56 Earth masses
Surface gravity around 1.13 g
An orbital period of 2.208 days
Semi-major axis 0.0352 AU
Equilibrium temperature 1,709 K (1436 °C)
Distance from Earth 8,536.64 light-years
Earth Similarity Index 0.142
Travel time at Voyager 1 speed 150,543,710 years

Kepler-1949 b Planet Profile

Physical Specs

Radius

2.22 R⊕

Radius (Jupiter)

0.198 R♃

Mass

5.56 M⊕

Mass (Jupiter)

0.018 M♃

Density

2.79 g/cm³

Surface Gravity

1.13 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.142

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

#1652of 1978

top 83.5%

This planet

2.22R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

KMT-2018-BLG-1988L b 2.22 R⊕ Kepler-938 b 2.22 R⊕ Kepler-1151 b 2.22 R⊕

Metric	Earth	Kepler-1949 b	Jupiter
Radius (R⊕)	1.00	2.22	11.21
Mass (M⊕)	1.00	5.56	317.83
Density (g/cm³)	5.51	2.79	1.33
Surface Gravity (g)	1.00	1.13	2.53
Insolation (S⊕)	1.00	2,016.25	0.037

Star Catalogue Identifiers

TIC

TIC 270611599

Gaia DR2

Gaia DR2 2077827284282464896

Gaia DR3

Gaia DR3 2077827284282464896

System

Kepler-1949

Percentile among Sub-Neptune cohort

Radius 2.220 R⊕ · percentile 16 / cohort 1978

Mass 5.560 M⊕ · percentile 17 / cohort 1978

Orbital period 2.21 d · percentile 3 / cohort 1946

Distance 2,617.35 pc · percentile 98 / cohort 1975

ESI 0.142 · percentile 2 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

2.208 days

Semi-major axis

0.0352 AU

Eccentricity

0.000

Inclination

88.00 °

Year Length

A year here lasts approximately 2.21 Earth days (0.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0352 AU.

Transit Fingerprint

Depth

0.009 %

Duration

2.841 h

Impact parameter b

0.205

Rp / R★

0.008594

Transit midpoint (BJD)

2,454,964.6309

Photometric dip

Transit produces a flux drop of 88 ppm lasting ≈ 2.84 h.

Extended Orbital Architecture

Planet / star radius ratio

0.008594

Semi-major axis / stellar radius

5.770

Impact parameter (b)

0.205

Transit mid-time (BJD)

2,454,964.6309

Angular separation (arcsec)

0.01340

Eq. Temperature

1,709K

(1436 °C)

Insolation (S⊕)

2,016.25

Earth = 1.00

Earth Similarity (ESI)

0.142

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

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-1949

Spectral Class

F-type yellow-white

Effective Temperature

6,028 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.454 R☉

Stellar Mass

1.194 M☉

Metallicity [Fe/H]

0.14

Extended Stellar Properties

Surface gravity (log g)

4.189 dex

Stellar density

0.795 g/cm³

Metallicity ratio

[Fe/H]

Distance

2,617.35 parsec

Light-years 8,536.64 ly

V-band magnitude

15.23 mag

Voyager-speed travel 150,543,710 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.353 mas

Total Proper Motion

12.116 mas/yr

PM Right Ascension

-5.18 mas/yr

PM Declination

-10.95 mas/yr

Galactic Cartesian (pc)

x = 0.292 · y = -0.670 · z = 0.682

Equatorial (J2000)

RA 293.54226° · Dec 43.02606°

Galactic ℓ, b

75.896° · 10.983°

Ecliptic λ, β

310.365° · 63.204°

HTM-20 index

-68776594