Confirmed Exoplanet Discovered 2015

Kepler-454 c

A gas giant orbiting the g-type yellow (sun-like) Kepler-454, located approximately 753.0 light-years from Earth.

Key parameters at a glance

  • A radius of 12.90 Earth radii
  • A mass of 1,433.41 Earth masses
  • Surface gravity around 8.61 g
  • An orbital period of 524.190 days
  • Semi-major axis 1.2870 AU
  • Distance from Earth 752.99 light-years
  • Earth Similarity Index 0.424
  • Travel time at Voyager 1 speed 13,279,033 years

2 siblings around Kepler-454

Kepler-454 c shares its host star with 2 other confirmed planets. Side-by-side measurements below.

Planet Type Radius (R⊕) Mass (M⊕) Period (d) Eq. T (K) Year
Kepler-454 b Sub-Neptune 2.37 5.40 10.574 916 2015
Kepler-454 c this Gas Giant 12.90 1,433.41 524.190 2015
Kepler-454 d Gas Giant 13.30 734.18 4,073.000 2023

Kepler-454 c Planet Profile

Physical Specs

Radius
12.90 R⊕
Radius (Jupiter)
1.150 R♃
Mass
1,433.41 M⊕
Mass (Jupiter)
4.510 M♃
Density
3.67 g/cm³
Surface Gravity
8.61 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.424
HZ Position Unknown
Controversial No

Discovery

Year 2015
Method Radial Velocity
Facility Multiple Facilities
Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#1011of 1771

top 57.0%

This planet

12.90R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth Kepler-454 c Jupiter
Radius (R⊕)1.0012.9011.21
Mass (M⊕)1.001,433.41317.83
Density (g/cm³)5.513.671.33
Surface Gravity (g)1.008.612.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Minimum mass (M sin i) 1,433.406 M⊕ Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 121276638

Gaia DR2

Gaia DR2 2099541715513813504

Gaia DR3

Gaia DR3 2099541715513813504

System

Kepler-454

Percentile among Gas Giant cohort

Radius 12.900 R⊕ · percentile 41 / cohort 1771
Mass 1,433.406 M⊕ · percentile 74 / cohort 1747
Orbital period 524.19 d · percentile 68 / cohort 1533
Distance 230.87 pc · percentile 54 / cohort 1759
ESI 0.424 · percentile 92 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
524.190 days
Semi-major axis
1.2870 AU
Eccentricity
0.005
Inclination
°

Year Length

A year here lasts about 1.44 Earth years on a nearly circular orbit at a mean orbital distance of 1.2870 AU.

Extended Orbital Architecture

RV semi-amplitude (K)

111.580 m/s

Transit mid-time (BJD)

2,457,151.8700

Long. of periastron (ω)

337.40°

Angular separation (arcsec)

5.57000

Eq. Temperature

 

Insolation (S⊕)

Earth = 1.00

Earth Similarity (ESI)

0.424

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Gettel et al. 2016

Instrument

Multiple Instruments

Publication

2016-01

Observation locale

Ground

Host System: Kepler-454

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,687 K — cooler than the Sun (5,778 K)

Estimated Age

5.25 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.066 R☉

Stellar Mass

1.030 M☉

Metallicity [Fe/H]

0.32

Extended Stellar Properties

Surface gravity (log g)

4.400 dex

Stellar density

1.199 g/cm³

Systemic radial velocity

-70.26 km/s

Rotational v·sin i

2.40 km/s

Metallicity ratio

[Fe/H]

Distance
230.87 parsec
Light-years 752.99 ly
V-band magnitude
11.57 mag
Voyager-speed travel 13,279,033 yr

Multi-band Host Photometry — 17 bands

9.114.614.59U12.38B11.57V11.44Gaia11.46Kepler10.98TESS11.54Sloan g10.80Sloan r11.21Sloan i12.09Sloan z10.36J10.02H9.97K9.92W19.97W29.91W39.14W4

Astrometric Data

Parallax

4.303 mas

Total Proper Motion

53.015 mas/yr

PM Right Ascension

21.85 mas/yr

PM Declination

48.30 mas/yr

Galactic Cartesian (pc)

x = 0.236 · y = -0.749 · z = 0.619

Equatorial (J2000)

RA 287.47865° · Dec 38.22908°

Galactic ℓ, b

69.441° · 13.054°

Ecliptic λ, β

298.127° · 59.973°

HTM-20 index

686175181

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