Confirmed Exoplanet Discovered 2016

Kepler-895 b

A super-earth orbiting the k-type orange Kepler-895, located approximately 1,761.7 light-years from Earth.

Key parameters at a glance

  • A radius of 1.54 Earth radii
  • A mass of 2.99 Earth masses
  • Surface gravity around 1.26 g
  • An orbital period of 2.806 days
  • Semi-major axis 0.0328 AU
  • Equilibrium temperature 771 K (498 °C)
  • Distance from Earth 1,761.68 light-years
  • Earth Similarity Index 0.389
  • Travel time at Voyager 1 speed 31,067,215 years
  • Almost certainly tidally locked to its host star given the close orbit

Kepler-895 b Planet Profile

Physical Specs

Radius
1.54 R⊕
Radius (Jupiter)
0.137 R♃
Mass
2.99 M⊕
Mass (Jupiter)
0.009 M♃
Density
4.50 g/cm³
Surface Gravity
1.26 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.389
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

#670of 1176

top 56.9%

This planet

1.54R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Metric Earth Kepler-895 b Jupiter
Radius (R⊕)1.001.5411.21
Mass (M⊕)1.002.99317.83
Density (g/cm³)5.514.501.33
Surface Gravity (g)1.001.262.53
Insolation (S⊕)1.00106.590.037

Star Catalogue Identifiers

TIC

TIC 299217801

Gaia DR2

Gaia DR2 2133259510888931456

Gaia DR3

Gaia DR3 2133259510888931456

System

Kepler-895

Percentile among Super-Earth cohort

Radius 1.540 R⊕ · percentile 42 / cohort 1176
Mass 2.990 M⊕ · percentile 38 / cohort 1176
Orbital period 2.81 d · percentile 19 / cohort 1164
Distance 540.13 pc · percentile 49 / cohort 1171
ESI 0.389 · percentile 58 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period
2.806 days
Semi-major axis
0.0328 AU
Eccentricity
0.000
Inclination
89.82 °

Year Length

A year here lasts approximately 2.81 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0328 AU.

Transit Fingerprint

Depth

0.060 %

Duration

1.717 h

Impact parameter b

0.020

Rp / R★

0.023112

Transit midpoint (BJD)

2,454,966.7313

Photometric dip

Transit produces a flux drop of 600 ppm lasting ≈ 1.72 h.

Extended Orbital Architecture

Planet / star radius ratio

0.023112

Semi-major axis / stellar radius

13.469

Impact parameter (b)

0.020

Transit mid-time (BJD)

2,454,966.7313

Angular separation (arcsec)

0.06070

Eq. Temperature

771K

(498 °C)

Insolation (S⊕)

106.59

Earth = 1.00

Earth Similarity (ESI)

0.389

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.

Discovery Paper

Primary reference

Morton et al. 2016

Instrument

Kepler CCD Array

Publication

2016-05

Observation locale

Space

Host System: Kepler-895

Spectral Class

K-type orange

Effective Temperature

4,315 K — cooler than the Sun (5,778 K)

Estimated Age

2.63 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.610 R☉

Stellar Mass

0.650 M☉

Metallicity [Fe/H]

-0.16

Extended Stellar Properties

Surface gravity (log g)

4.670 dex

Stellar density

5.021 g/cm³

Metallicity ratio

[Fe/H]

Distance
540.13 parsec
Light-years 1,761.68 ly
V-band magnitude
16.21 mag
Voyager-speed travel 31,067,215 yr

Multi-band Host Photometry — 16 bands

9.518.118.14B16.21V15.98Gaia15.99Kepler15.19TESS17.16Sloan g15.93Sloan r15.49Sloan i15.24Sloan z14.09J13.45H13.39K13.23W113.29W212.59W39.48W4

Astrometric Data

Parallax

1.823 mas

Total Proper Motion

24.804 mas/yr

PM Right Ascension

-2.57 mas/yr

PM Declination

24.67 mas/yr

Galactic Cartesian (pc)

x = 0.206 · y = -0.589 · z = 0.782

Equatorial (J2000)

RA 289.29070° · Dec 51.40899°

Galactic ℓ, b

82.500° · 17.111°

Ecliptic λ, β

311.948° · 72.046°

HTM-20 index

50786388

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