Confirmed Exoplanet Discovered 2016

Kepler-848 b

A super-earth orbiting the g-type yellow (sun-like) Kepler-848, located approximately 4,496.0 light-years from Earth.

Key parameters at a glance

  • A radius of 1.70 Earth radii
  • A mass of 3.53 Earth masses
  • Surface gravity around 1.22 g
  • An orbital period of 6.911 days
  • Semi-major axis 0.0759 AU
  • Equilibrium temperature 1,086 K (813 °C)
  • Distance from Earth 4,495.96 light-years
  • Earth Similarity Index 0.262
  • Travel time at Voyager 1 speed 79,286,296 years

Kepler-848 b Planet Profile

Physical Specs

Radius
1.70 R⊕
Radius (Jupiter)
0.152 R♃
Mass
3.53 M⊕
Mass (Jupiter)
0.011 M♃
Density
3.95 g/cm³
Surface Gravity
1.22 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.262
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

#401of 1176

top 34.0%

This planet

1.70R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Metric Earth Kepler-848 b Jupiter
Radius (R⊕)1.001.7011.21
Mass (M⊕)1.003.53317.83
Density (g/cm³)5.513.951.33
Surface Gravity (g)1.001.222.53
Insolation (S⊕)1.00794.780.037

Star Catalogue Identifiers

TIC

TIC 26817863

Gaia DR2

Gaia DR2 2129014330855767040

Gaia DR3

Gaia DR3 2129014330855767040

System

Kepler-848

Percentile among Super-Earth cohort

Radius 1.700 R⊕ · percentile 65 / cohort 1176
Mass 3.530 M⊕ · percentile 59 / cohort 1176
Orbital period 6.91 d · percentile 51 / cohort 1164
Distance 1,378.47 pc · percentile 93 / cohort 1171
ESI 0.262 · percentile 27 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period
6.911 days
Semi-major axis
0.0759 AU
Eccentricity
0.000
Inclination
88.37 °

Year Length

A year here lasts approximately 6.91 Earth days (1.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0759 AU.

Transit Fingerprint

Depth

0.020 %

Duration

5.656 h

Impact parameter b

0.260

Rp / R★

0.013362

Transit midpoint (BJD)

2,454,969.6481

Photometric dip

Transit produces a flux drop of 202 ppm lasting ≈ 5.66 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013362

Semi-major axis / stellar radius

9.130

Impact parameter (b)

0.260

Transit mid-time (BJD)

2,454,969.6481

Angular separation (arcsec)

0.05500

Eq. Temperature

1,086K

(813 °C)

Insolation (S⊕)

794.78

Earth = 1.00

Earth Similarity (ESI)

0.262

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-848

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,695 K — cooler than the Sun (5,778 K)

Estimated Age

8.32 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.200 R☉

Stellar Mass

1.010 M☉

Metallicity [Fe/H]

0.15

Extended Stellar Properties

Surface gravity (log g)

4.280 dex

Stellar density

0.150 g/cm³

Metallicity ratio

[Fe/H]

Distance
1,378.47 parsec
Light-years 4,495.96 ly
V-band magnitude
14.19 mag
Voyager-speed travel 79,286,296 yr

Multi-band Host Photometry — 16 bands

9.714.914.94B14.19V14.01Gaia14.06Kepler13.54TESS14.52Sloan g13.97Sloan r13.86Sloan i13.73Sloan z12.84J12.48H12.43K12.43W112.45W212.35W39.74W4

Astrometric Data

Parallax

0.697 mas

Total Proper Motion

5.759 mas/yr

PM Right Ascension

5.59 mas/yr

PM Declination

-1.39 mas/yr

Galactic Cartesian (pc)

x = 0.260 · y = -0.605 · z = 0.753

Equatorial (J2000)

RA 293.28829° · Dec 48.81161°

Galactic ℓ, b

81.122° · 13.713°

Ecliptic λ, β

315.522° · 68.600°

HTM-20 index

-777115165

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