Confirmed Exoplanet Discovered 2016

KIC 7917485 b

A gas giant orbiting the a-type white KIC 7917485, located approximately 4,510.4 light-years from Earth.

Key parameters at a glance

  • A radius of 12.40 Earth radii
  • A mass of 3,750.39 Earth masses
  • Surface gravity around 24.39 g
  • An orbital period of 840.000 days
  • Distance from Earth 4,510.38 light-years
  • Earth Similarity Index 0.361
  • Travel time at Voyager 1 speed 79,540,524 years

KIC 7917485 b Planet Profile

Physical Specs

Radius
12.40 R⊕
Radius (Jupiter)
1.100 R♃
Mass
3,750.39 M⊕
Mass (Jupiter)
11.800 M♃
Density
10.80 g/cm³
Surface Gravity
24.39 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.361
HZ Position Unknown
Controversial No

Discovery

Year 2016
Method Pulsation Timing Variations
Facility Kepler
Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1298of 1771

top 73.2%

This planet

12.40R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth KIC 7917485 b Jupiter
Radius (R⊕)1.0012.4011.21
Mass (M⊕)1.003,750.39317.83
Density (g/cm³)5.5110.801.33
Surface Gravity (g)1.0024.392.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Minimum mass (M sin i) 3,750.394 M⊕ Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 268924604

Gaia DR2

Gaia DR2 2075978592919858432

Gaia DR3

Gaia DR3 2075978592919858432

System

KIC 7917485

Percentile among Gas Giant cohort

Radius 12.400 R⊕ · percentile 25 / cohort 1771
Mass 3,750.394 M⊕ · percentile 90 / cohort 1747
Orbital period 840.00 d · percentile 74 / cohort 1533
Distance 1,382.89 pc · percentile 89 / cohort 1759
ESI 0.361 · percentile 74 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
840.000 days
Semi-major axis
AU
Eccentricity
0.150
Inclination
°

Year Length

A year here lasts about 2.30 Earth years on a mildly elliptical path.

Eq. Temperature

 

Insolation (S⊕)

Earth = 1.00

Earth Similarity (ESI)

0.361

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Murphy et al. 2016

Instrument

Kepler CCD Array

Publication

2016-08

Observation locale

Space

Host System: KIC 7917485

Spectral Class

A-type white

Effective Temperature

7,067 K — hotter than the Sun (5,778 K)

Estimated Age

Stellar Radius

2.010 R☉

Stellar Mass

1.630 M☉

Metallicity [Fe/H]

-0.02

Extended Stellar Properties

Surface gravity (log g)

4.000 dex

Stellar density

0.232 g/cm³

Rotational v·sin i

120.00 km/s

Metallicity ratio

[Fe/H]

Distance
1,382.89 parsec
Light-years 4,510.38 ly
V-band magnitude
13.17 mag
Voyager-speed travel 79,540,524 yr

Multi-band Host Photometry — 16 bands

9.213.713.74B13.17V13.11Gaia13.19Kepler12.81TESS13.35Sloan g13.13Sloan r13.09Sloan i13.10Sloan z12.30J12.11H12.11K12.08W112.11W211.72W39.25W4

Astrometric Data

Parallax

0.695 mas

Total Proper Motion

6.516 mas/yr

PM Right Ascension

2.41 mas/yr

PM Declination

-6.06 mas/yr

Galactic Cartesian (pc)

x = 0.356 · y = -0.630 · z = 0.690

Equatorial (J2000)

RA 299.43461° · Dec 43.63261°

Galactic ℓ, b

78.527° · 7.521°

Ecliptic λ, β

319.489° · 62.108°

HTM-20 index

1866502090

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