Key parameters at a glance

A radius of 1.23 Earth radii
A mass of 2.04 Earth masses
Surface gravity around 1.35 g
An orbital period of 3.990 days
Semi-major axis 0.0474 AU
Equilibrium temperature 903 K (630 °C)
Distance from Earth 1,645.80 light-years
Earth Similarity Index 0.345
Travel time at Voyager 1 speed 29,023,672 years

Kepler-882 b Planet Profile

Physical Specs

Radius

1.23 R⊕

Radius (Jupiter)

0.110 R♃

Mass

2.04 M⊕

Mass (Jupiter)

0.006 M♃

Density

6.02 g/cm³

Surface Gravity

1.35 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.345

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

#17of 570

top 2.8%

This planet

1.23R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-252 b 1.23 R⊕ Kepler-271 b 1.23 R⊕ Kepler-197 c 1.23 R⊕

Metric	Earth	Kepler-882 b	Jupiter
Radius (R⊕)	1.00	1.23	11.21
Mass (M⊕)	1.00	2.04	317.83
Density (g/cm³)	5.51	6.02	1.33
Surface Gravity (g)	1.00	1.35	2.53
Insolation (S⊕)	1.00	259.03	0.037

Star Catalogue Identifiers

TIC

TIC 271158747

Gaia DR2

Gaia DR2 2077988401397704320

Gaia DR3

Gaia DR3 2077988401397704320

System

Kepler-882

Percentile among Rocky Terrestrial cohort

Radius 1.230 R⊕ · percentile 94 / cohort 570

Mass 2.040 M⊕ · percentile 86 / cohort 570

Orbital period 3.99 d · percentile 44 / cohort 567

Distance 504.61 pc · percentile 64 / cohort 566

ESI 0.345 · percentile 50 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

3.990 days

Semi-major axis

0.0474 AU

Eccentricity

0.000

Inclination

89.75 °

Year Length

A year here lasts approximately 3.99 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0474 AU.

Transit Fingerprint

Depth

0.019 %

Duration

1.540 h

Impact parameter b

0.085

Rp / R★

0.012629

Transit midpoint (BJD)

2,454,967.0998

Photometric dip

Transit produces a flux drop of 190 ppm lasting ≈ 1.54 h.

Extended Orbital Architecture

Planet / star radius ratio

0.012629

Semi-major axis / stellar radius

19.330

Impact parameter (b)

0.085

Transit mid-time (BJD)

2,454,967.0998

Angular separation (arcsec)

0.09400

Eq. Temperature

903K

(630 °C)

Insolation (S⊕)

259.03

Earth = 1.00

Earth Similarity (ESI)

0.345

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.

Discovery Paper

Primary reference

Morton et al. 2016

Instrument

Kepler CCD Array

Publication

2016-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2016 at Kepler (12 shown).

Kepler-1512 b · Rocky Terrestrial Kepler-1410 b · Super-Earth Kepler-560 b · Super-Earth Kepler-1389 b · Super-Earth Kepler-1450 b · Super-Earth Kepler-1544 b · Super-Earth Kepler-1459 b · Super-Earth Kepler-1638 b · Super-Earth Kepler-737 b · Super-Earth Kepler-1185 b · Super-Earth Kepler-1178 b · Rocky Terrestrial Kepler-1040 b · Sub-Neptune

Host System: Kepler-882

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,476 K — cooler than the Sun (5,778 K)

Estimated Age

4.57 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.870 R☉

Stellar Mass

0.900 M☉

Metallicity [Fe/H]

-0.03

Extended Stellar Properties

Surface gravity (log g)

4.520 dex

Stellar density

1.500 g/cm³

Metallicity ratio

[Fe/H]

Distance

504.61 parsec

Light-years 1,645.80 ly

V-band magnitude

14.19 mag

Voyager-speed travel 29,023,672 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.953 mas

Total Proper Motion

20.328 mas/yr

PM Right Ascension

18.27 mas/yr

PM Declination

8.90 mas/yr

Galactic Cartesian (pc)

x = 0.303 · y = -0.661 · z = 0.686

Equatorial (J2000)

RA 294.65003° · Dec 43.33561°

Galactic ℓ, b

76.554° · 10.408°

Ecliptic λ, β

312.284° · 63.201°

HTM-20 index

-1414968618