Key parameters at a glance

A radius of 1.11 Earth radii
A mass of 1.41 Earth masses
Surface gravity around 1.14 g
An orbital period of 2.053 days
Semi-major axis 0.0324 AU
Equilibrium temperature 1,737 K (1464 °C)
Distance from Earth 1,322.67 light-years
Earth Similarity Index 0.169
Travel time at Voyager 1 speed 23,325,288 years

Kepler-1084 b Planet Profile

Physical Specs

Radius

1.11 R⊕

Radius (Jupiter)

0.099 R♃

Mass

1.41 M⊕

Mass (Jupiter)

0.004 M♃

Density

5.67 g/cm³

Surface Gravity

1.14 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.169

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

#209of 570

top 36.5%

This planet

1.11R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-124 d 1.11 R⊕ Kepler-327 b 1.11 R⊕ Kepler-333 c 1.11 R⊕

Metric	Earth	Kepler-1084 b	Jupiter
Radius (R⊕)	1.00	1.11	11.21
Mass (M⊕)	1.00	1.41	317.83
Density (g/cm³)	5.51	5.67	1.33
Surface Gravity (g)	1.00	1.14	2.53
Insolation (S⊕)	1.00	1,766.59	0.037

Star Catalogue Identifiers

TIC

TIC 267749737

Gaia DR2

Gaia DR2 2129464546506876928

Gaia DR3

Gaia DR3 2129464546506876928

System

Kepler-1084

Percentile among Rocky Terrestrial cohort

Radius 1.110 R⊕ · percentile 61 / cohort 570

Mass 1.410 M⊕ · percentile 56 / cohort 570

Orbital period 2.05 d · percentile 23 / cohort 567

Distance 405.53 pc · percentile 54 / cohort 566

ESI 0.169 · percentile 8 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

2.053 days

Semi-major axis

0.0324 AU

Eccentricity

0.000

Inclination

61.50 °

Year Length

A year here lasts approximately 2.05 Earth days (0.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0324 AU.

Transit Fingerprint

Depth

0.007 %

Duration

2.375 h

Impact parameter b

0.813

Rp / R★

0.007597

Transit midpoint (BJD)

2,454,967.5180

Photometric dip

Transit produces a flux drop of 66 ppm lasting ≈ 2.38 h.

Extended Orbital Architecture

Planet / star radius ratio

0.007597

Semi-major axis / stellar radius

2.030

Impact parameter (b)

0.813

Transit mid-time (BJD)

2,454,967.5180

Angular separation (arcsec)

0.07990

Eq. Temperature

1,737K

(1464 °C)

Insolation (S⊕)

1,766.59

Earth = 1.00

Earth Similarity (ESI)

0.169

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

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-1084

Spectral Class

F-type yellow-white

Effective Temperature

6,113 K — hotter than the Sun (5,778 K)

Estimated Age

4.07 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.280 R☉

Stellar Mass

1.120 M☉

Metallicity [Fe/H]

-0.02

Extended Stellar Properties

Surface gravity (log g)

4.270 dex

Stellar density

0.560 g/cm³

Systemic radial velocity

3.35 km/s

Metallicity ratio

[Fe/H]

Distance

405.53 parsec

Light-years 1,322.67 ly

V-band magnitude

12.02 mag

Voyager-speed travel 23,325,288 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

2.438 mas

Total Proper Motion

2.902 mas/yr

PM Right Ascension

0.87 mas/yr

PM Declination

2.77 mas/yr

Galactic Cartesian (pc)

x = 0.229 · y = -0.625 · z = 0.746

Equatorial (J2000)

RA 290.10198° · Dec 48.25115°

Galactic ℓ, b

79.685° · 15.396°

Ecliptic λ, β

309.566° · 68.945°

HTM-20 index

-383498672