Key parameters at a glance

A radius of 2.46 Earth radii
A mass of 61.00 Earth masses
Surface gravity around 10.08 g
An orbital period of 24.806 days
Semi-major axis 0.1584 AU
Equilibrium temperature 588 K (315 °C)
Distance from Earth 4,362.70 light-years
Earth Similarity Index 0.331
Travel time at Voyager 1 speed 76,936,127 years

3 siblings around Kepler-282

Kepler-282 d shares its host star with 3 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-282 b	Rocky Terrestrial	1.01	1.01	9.221	817	2014
Kepler-282 c	Rocky Terrestrial	1.20	1.87	13.639	717	2014
Kepler-282 d this	Sub-Neptune	2.46	61.00	24.806	588	2013
Kepler-282 e	Sub-Neptune	3.10	56.20	44.347	484	2013

Kepler-282 d Planet Profile

Physical Specs

Radius

2.46 R⊕

Radius (Jupiter)

0.219 R♃

Mass

61.00 M⊕

Mass (Jupiter)

0.192 M♃

Density

22.50 g/cm³

Surface Gravity

10.08 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.331

HZ Position Inner

Controversial No

Discovery

Year 2013

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1245of 1978

top 62.9%

This planet

2.46R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-933 b 2.46 R⊕ GJ 3341 b 2.46 R⊕ TOI-5800 b 2.46 R⊕

Metric	Earth	Kepler-282 d	Jupiter
Radius (R⊕)	1.00	2.46	11.21
Mass (M⊕)	1.00	61.00	317.83
Density (g/cm³)	5.51	22.50	1.33
Surface Gravity (g)	1.00	10.08	2.53
Insolation (S⊕)	1.00	52.35	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	61.000 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 164779321

Gaia DR2

Gaia DR2 2106739943262307200

Gaia DR3

Gaia DR3 2106739943262307200

System

Kepler-282

Percentile among Sub-Neptune cohort

Radius 2.460 R⊕ · percentile 37 / cohort 1978

Mass 61.000 M⊕ · percentile 98 / cohort 1978

Orbital period 24.81 d · percentile 69 / cohort 1946

Distance 1,337.61 pc · percentile 89 / cohort 1975

ESI 0.331 · percentile 35 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

24.806 days

Semi-major axis

0.1584 AU

Eccentricity

0.000

Inclination

89.99 °

Year Length

A year here lasts approximately 24.81 Earth days (6.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1584 AU.

Transit Fingerprint

Depth

0.062 %

Duration

6.151 h

Impact parameter b

0.763

Rp / R★

0.023740

Transit midpoint (BJD)

2,454,978.0750

Photometric dip

Transit produces a flux drop of 624 ppm lasting ≈ 6.15 h.

Extended Orbital Architecture

Planet / star radius ratio

0.023740

Semi-major axis / stellar radius

31.527

Impact parameter (b)

0.763

Transit mid-time (BJD)

2,454,978.0750

Angular separation (arcsec)

0.11800

Eq. Temperature

588K

(315 °C)

Insolation (S⊕)

52.35

Earth = 1.00

Earth Similarity (ESI)

0.331

0 = alien, 1 = Earth-identical

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

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Transit timing variations

Gravitational interactions from neighbours have been detected.

Discovery Paper

Primary reference

Xie 2014

Instrument

Kepler CCD Array

Publication

2014-02

Observation locale

Space

Discovery cohort

Planets confirmed in 2013 at Kepler (12 shown).

Kepler-69 c · Super-Earth Kepler-61 b · Sub-Neptune Kepler-62 e · Super-Earth KOI-351 f · Sub-Neptune Kepler-62 f · Super-Earth KOI-351 e · Sub-Neptune Kepler-1704 b · Gas Giant Kepler-37 d · Sub-Neptune Kepler-282 e · Sub-Neptune KOI-351 h · Gas Giant KOI-351 d · Sub-Neptune Kepler-114 c · Super-Earth

Host System: Kepler-282

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,656 K — cooler than the Sun (5,778 K)

Estimated Age

12.88 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.890 R☉

Stellar Mass

0.970 M☉

Metallicity [Fe/H]

-0.20

Extended Stellar Properties

Surface gravity (log g)

4.530 dex

Stellar density

0.640 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,337.61 parsec

Light-years 4,362.70 ly

V-band magnitude

15.44 mag

Voyager-speed travel 76,936,127 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.719 mas

Total Proper Motion

8.884 mas/yr

PM Right Ascension

-6.56 mas/yr

PM Declination

-5.99 mas/yr

Galactic Cartesian (pc)

x = 0.180 · y = -0.686 · z = 0.705

Equatorial (J2000)

RA 284.67724° · Dec 44.79764°

Galactic ℓ, b

74.876° · 17.533°

Ecliptic λ, β

297.217° · 66.855°

HTM-20 index

965524275