Key parameters at a glance

A radius of 4.08 Earth radii
A mass of 15.60 Earth masses
Surface gravity around 0.94 g
An orbital period of 14.557 days
Semi-major axis 0.1205 AU
Equilibrium temperature 879 K (606 °C)
Distance from Earth 2,954.77 light-years
Earth Similarity Index 0.234
Travel time at Voyager 1 speed 52,107,329 years

Kepler-473 b Planet Profile

Physical Specs

Radius

4.08 R⊕

Radius (Jupiter)

0.364 R♃

Mass

15.60 M⊕

Mass (Jupiter)

0.049 M♃

Density

1.26 g/cm³

Surface Gravity

0.94 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.234

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

#549of 574

top 95.5%

This planet

4.08R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

OGLE-2017-BLG-0448L b 4.08 R⊕ Kepler-248 c 4.07 R⊕ HD 125612 c 4.07 R⊕

Metric	Earth	Kepler-473 b	Jupiter
Radius (R⊕)	1.00	4.08	11.21
Mass (M⊕)	1.00	15.60	317.83
Density (g/cm³)	5.51	1.26	1.33
Surface Gravity (g)	1.00	0.94	2.53
Insolation (S⊕)	1.00	243.38	0.037

Star Catalogue Identifiers

TIC

TIC 120961632

Gaia DR2

Gaia DR2 2100009935669354240

Gaia DR3

Gaia DR3 2100009935669354240

System

Kepler-473

Percentile among Neptune-like cohort

Radius 4.080 R⊕ · percentile 4 / cohort 574

Mass 15.600 M⊕ · percentile 10 / cohort 574

Orbital period 14.56 d · percentile 44 / cohort 524

Distance 905.94 pc · percentile 71 / cohort 572

ESI 0.234 · percentile 37 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

14.557 days

Semi-major axis

0.1205 AU

Eccentricity

0.000

Inclination

89.86 °

Year Length

A year here lasts approximately 14.56 Earth days (4.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1205 AU.

Transit Fingerprint

Depth

0.096 %

Duration

7.772 h

Impact parameter b

0.070

Rp / R★

0.028396

Transit midpoint (BJD)

2,454,978.0947

Photometric dip

Transit produces a flux drop of 957 ppm lasting ≈ 7.77 h.

Extended Orbital Architecture

Planet / star radius ratio

0.028396

Semi-major axis / stellar radius

14.728

Impact parameter (b)

0.070

Transit mid-time (BJD)

2,454,978.0947

Angular separation (arcsec)

0.13300

Eq. Temperature

879K

(606 °C)

Insolation (S⊕)

243.38

Earth = 1.00

Earth Similarity (ESI)

0.234

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

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-473

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,816 K — hotter than the Sun (5,778 K)

Estimated Age

6.92 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.340 R☉

Stellar Mass

1.060 M☉

Metallicity [Fe/H]

0.12

Extended Stellar Properties

Surface gravity (log g)

4.210 dex

Stellar density

0.180 g/cm³

Metallicity ratio

[Fe/H]

Distance

905.94 parsec

Light-years 2,954.77 ly

V-band magnitude

13.55 mag

Voyager-speed travel 52,107,329 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

1.075 mas

Total Proper Motion

3.711 mas/yr

PM Right Ascension

-2.10 mas/yr

PM Declination

3.06 mas/yr

Galactic Cartesian (pc)

x = 0.223 · y = -0.745 · z = 0.629

Equatorial (J2000)

RA 286.63008° · Dec 38.94559°

Galactic ℓ, b

69.835° · 13.952°

Ecliptic λ, β

297.165° · 60.826°

HTM-20 index

576854539