Key parameters at a glance

A radius of 6.54 Earth radii
A mass of 34.80 Earth masses
Surface gravity around 0.81 g
An orbital period of 3.729 days
Semi-major axis 0.0455 AU
Equilibrium temperature 1,023 K (750 °C)
Distance from Earth 2,994.80 light-years
Earth Similarity Index 0.161
Travel time at Voyager 1 speed 52,813,242 years

Kepler-673 b Planet Profile

Physical Specs

Radius

6.54 R⊕

Radius (Jupiter)

0.583 R♃

Mass

34.80 M⊕

Mass (Jupiter)

0.110 M♃

Density

0.68 g/cm³

Surface Gravity

0.81 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.161

HZ Position Inner

Controversial No

Discovery

Year 2016

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#236of 574

top 40.9%

This planet

6.54R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

Kepler-297 c 6.54 R⊕ V1298 Tau d 6.53 R⊕ KOI-94 e 6.56 R⊕

Metric	Earth	Kepler-673 b	Jupiter
Radius (R⊕)	1.00	6.54	11.21
Mass (M⊕)	1.00	34.80	317.83
Density (g/cm³)	5.51	0.68	1.33
Surface Gravity (g)	1.00	0.81	2.53
Insolation (S⊕)	1.00	253.46	0.037

Star Catalogue Identifiers

TIC

TIC 417657148

Gaia DR2

Gaia DR2 2130040450081573376

Gaia DR3

Gaia DR3 2130040450081573376

System

Kepler-673

Percentile among Neptune-like cohort

Radius 6.540 R⊕ · percentile 59 / cohort 574

Mass 34.800 M⊕ · percentile 57 / cohort 574

Orbital period 3.73 d · percentile 10 / cohort 524

Distance 918.21 pc · percentile 72 / cohort 572

ESI 0.161 · percentile 18 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

3.729 days

Semi-major axis

0.0455 AU

Eccentricity

0.000

Inclination

86.70 °

Year Length

A year here lasts approximately 3.73 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0455 AU.

Transit Fingerprint

Depth

0.523 %

Duration

2.673 h

Impact parameter b

0.558

Rp / R★

0.070766

Transit midpoint (BJD)

2,455,004.7934

Photometric dip

Transit produces a flux drop of 5,227 ppm lasting ≈ 2.67 h.

Extended Orbital Architecture

Planet / star radius ratio

0.070766

Semi-major axis / stellar radius

9.700

Impact parameter (b)

0.558

Transit mid-time (BJD)

2,455,004.7934

Angular separation (arcsec)

0.04960

Eq. Temperature

1,023K

(750 °C)

Insolation (S⊕)

253.46

Earth = 1.00

Earth Similarity (ESI)

0.161

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Morton et al. 2016

Instrument

Kepler CCD Array

Publication

2016-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2016 at Kepler (12 shown).

Kepler-1512 b · Rocky Terrestrial Kepler-1410 b · Super-Earth Kepler-560 b · Super-Earth Kepler-1389 b · Super-Earth Kepler-1450 b · Super-Earth Kepler-1544 b · Super-Earth Kepler-1459 b · Super-Earth Kepler-1638 b · Super-Earth Kepler-737 b · Super-Earth Kepler-1185 b · Super-Earth Kepler-1178 b · Rocky Terrestrial Kepler-1040 b · Sub-Neptune

Host System: Kepler-673

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,355 K — cooler than the Sun (5,778 K)

Estimated Age

4.47 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.840 R☉

Stellar Mass

0.880 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.540 dex

Stellar density

1.411 g/cm³

Metallicity ratio

[Fe/H]

Distance

918.21 parsec

Light-years 2,994.80 ly

V-band magnitude

15.59 mag

Voyager-speed travel 52,813,242 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.061 mas

Total Proper Motion

10.286 mas/yr

PM Right Ascension

-4.27 mas/yr

PM Declination

-9.36 mas/yr

Galactic Cartesian (pc)

x = 0.228 · y = -0.600 · z = 0.767

Equatorial (J2000)

RA 290.78576° · Dec 50.05406°

Galactic ℓ, b

81.586° · 15.711°

Ecliptic λ, β

312.828° · 70.418°

HTM-20 index

1022606365