Key parameters at a glance

A radius of 3.21 Earth radii
A mass of 10.40 Earth masses
Surface gravity around 1.01 g
An orbital period of 62.561 days
Semi-major axis 0.3017 AU
Equilibrium temperature 417 K (144 °C)
Distance from Earth 3,302.26 light-years
Earth Similarity Index 0.525
Travel time at Voyager 1 speed 58,235,427 years

Kepler-1674 b Planet Profile

Physical Specs

Radius

3.21 R⊕

Radius (Jupiter)

0.286 R♃

Mass

10.40 M⊕

Mass (Jupiter)

0.033 M♃

Density

1.73 g/cm³

Surface Gravity

1.01 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.525

HZ Position Inner

Controversial No

Discovery

Year 2020

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#346of 1978

top 17.4%

This planet

3.21R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

K2-172 c 3.21 R⊕ K2-370 b 3.21 R⊕ MOA-2009-BLG-266L b 3.21 R⊕

Metric	Earth	Kepler-1674 b	Jupiter
Radius (R⊕)	1.00	3.21	11.21
Mass (M⊕)	1.00	10.40	317.83
Density (g/cm³)	5.51	1.73	1.33
Surface Gravity (g)	1.00	1.01	2.53
Insolation (S⊕)	1.00	7.13	0.037

Star Catalogue Identifiers

TIC

TIC 271256817

Gaia DR2

Gaia DR2 2079934640055270144

Gaia DR3

Gaia DR3 2079934640055270144

System

Kepler-1674

Percentile among Sub-Neptune cohort

Radius 3.206 R⊕ · percentile 83 / cohort 1978

Mass 10.400 M⊕ · percentile 76 / cohort 1978

Orbital period 62.56 d · percentile 89 / cohort 1946

Distance 1,012.48 pc · percentile 79 / cohort 1975

ESI 0.525 · percentile 74 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

62.561 days

Semi-major axis

0.3017 AU

Eccentricity

0.000

Inclination

89.02 °

Year Length

A year here lasts approximately 62.56 Earth days (17.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.3017 AU.

Transit Fingerprint

Depth

0.137 %

Duration

5.907 h

Impact parameter b

0.025

Rp / R★

0.033000

Transit midpoint (BJD)

2,455,011.4072

Photometric dip

Transit produces a flux drop of 1,373 ppm lasting ≈ 5.91 h.

Extended Orbital Architecture

Planet / star radius ratio

0.033000

Semi-major axis / stellar radius

91.300

Impact parameter (b)

0.025

Transit mid-time (BJD)

2,455,011.4072

Angular separation (arcsec)

0.29800

Eq. Temperature

417K

(144 °C)

Insolation (S⊕)

7.13

Earth = 1.00

Earth Similarity (ESI)

0.525

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

Armstrong et al. 2021

Instrument

Kepler CCD Array

Publication

2021-07

Observation locale

Space

Discovery cohort

Planets confirmed in 2020 at Kepler (12 shown).

Kepler-1649 c · Rocky Terrestrial Kepler-1701 b · Sub-Neptune Kepler-1690 b · Sub-Neptune Kepler-1700 b · Sub-Neptune Kepler-1684 b · Sub-Neptune Kepler-1678 b · Sub-Neptune Kepler-598 c · Sub-Neptune Kepler-1661 b · Sub-Neptune Kepler-1663 b · Sub-Neptune Kepler-1681 b · Sub-Neptune Kepler-1672 b · Sub-Neptune Kepler-1702 b · Super-Earth

Host System: Kepler-1674

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,474 K — cooler than the Sun (5,778 K)

Estimated Age

0.50 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.877 R☉

Stellar Mass

0.960 M☉

Metallicity [Fe/H]

0.06

Extended Stellar Properties

Surface gravity (log g)

4.534 dex

Stellar density

2.005 g/cm³

Metallicity ratio

[M/H]

Distance

1,012.48 parsec

Light-years 3,302.26 ly

V-band magnitude

15.70 mag

Voyager-speed travel 58,235,427 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.960 mas

Total Proper Motion

6.826 mas/yr

PM Right Ascension

-3.59 mas/yr

PM Declination

-5.81 mas/yr

Galactic Cartesian (pc)

x = 0.295 · y = -0.638 · z = 0.711

Equatorial (J2000)

RA 294.81604° · Dec 45.30608°

Galactic ℓ, b

78.388° · 11.214°

Ecliptic λ, β

314.255° · 64.978°

HTM-20 index

-1735170708