Confirmed Exoplanet Discovered 2016

Kepler-464 b

A sub-neptune orbiting the g-type yellow (sun-like) Kepler-464, located approximately 2,177.4 light-years from Earth.

Key parameters at a glance

  • A radius of 3.30 Earth radii
  • A mass of 10.90 Earth masses
  • Surface gravity around 1.00 g
  • An orbital period of 7.257 days
  • Semi-major axis 0.0793 AU
  • Equilibrium temperature 1,163 K (890 °C)
  • Distance from Earth 2,177.43 light-years
  • Earth Similarity Index 0.190
  • Travel time at Voyager 1 speed 38,398,985 years

Kepler-464 b Planet Profile

Physical Specs

Radius
3.30 R⊕
Radius (Jupiter)
0.294 R♃
Mass
10.90 M⊕
Mass (Jupiter)
0.034 M♃
Density
1.67 g/cm³
Surface Gravity
1.00 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.190
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

#280of 1978

top 14.1%

This planet

3.30R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Metric Earth Kepler-464 b Jupiter
Radius (R⊕)1.003.3011.21
Mass (M⊕)1.0010.90317.83
Density (g/cm³)5.511.671.33
Surface Gravity (g)1.001.002.53
Insolation (S⊕)1.00495.010.037

Star Catalogue Identifiers

TIC

TIC 27239696

Gaia DR2

Gaia DR2 2134798444914611712

Gaia DR3

Gaia DR3 2134798444914611712

System

Kepler-464

Percentile among Sub-Neptune cohort

Radius 3.300 R⊕ · percentile 86 / cohort 1978
Mass 10.900 M⊕ · percentile 79 / cohort 1978
Orbital period 7.26 d · percentile 23 / cohort 1946
Distance 667.60 pc · percentile 58 / cohort 1975
ESI 0.190 · percentile 6 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period
7.257 days
Semi-major axis
0.0793 AU
Eccentricity
0.000
Inclination
85.51 °

Year Length

A year here lasts approximately 7.26 Earth days (2.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0793 AU.

Transit Fingerprint

Depth

0.046 %

Duration

4.864 h

Impact parameter b

0.831

Rp / R★

0.019494

Transit midpoint (BJD)

2,454,967.0233

Photometric dip

Transit produces a flux drop of 463 ppm lasting ≈ 4.86 h.

Extended Orbital Architecture

Planet / star radius ratio

0.019494

Semi-major axis / stellar radius

6.520

Impact parameter (b)

0.831

Transit mid-time (BJD)

2,454,967.0233

Angular separation (arcsec)

0.11900

Eq. Temperature

1,163K

(890 °C)

Insolation (S⊕)

495.01

Earth = 1.00

Earth Similarity (ESI)

0.190

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

Host System: Kepler-464

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,933 K — hotter than the Sun (5,778 K)

Estimated Age

4.90 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.590 R☉

Stellar Mass

1.210 M☉

Metallicity [Fe/H]

0.19

Extended Stellar Properties

Surface gravity (log g)

4.110 dex

Stellar density

0.310 g/cm³

Systemic radial velocity

-50.98 km/s

Metallicity ratio

[Fe/H]

Distance
667.60 parsec
Light-years 2,177.43 ly
V-band magnitude
12.75 mag
Voyager-speed travel 38,398,985 yr

Multi-band Host Photometry — 16 bands

9.113.513.51B12.75V12.67Gaia12.70Kepler12.24TESS13.10Sloan g12.66Sloan r12.53Sloan i12.51Sloan z11.65J11.36H11.34K11.26W111.30W211.19W39.09W4

Astrometric Data

Parallax

1.469 mas

Total Proper Motion

11.441 mas/yr

PM Right Ascension

-7.09 mas/yr

PM Declination

-8.98 mas/yr

Galactic Cartesian (pc)

x = 0.276 · y = -0.596 · z = 0.755

Equatorial (J2000)

RA 294.83511° · Dec 48.98232°

Galactic ℓ, b

81.741° · 12.876°

Ecliptic λ, β

318.211° · 68.305°

HTM-20 index

1677383162

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