Key parameters at a glance

A radius of 2.11 Earth radii
A mass of 5.10 Earth masses
Surface gravity around 1.15 g
An orbital period of 30.455 days
Semi-major axis 0.1939 AU
Equilibrium temperature 624 K (351 °C)
Distance from Earth 9,392.74 light-years
Earth Similarity Index 0.431
Travel time at Voyager 1 speed 165,640,931 years

Kepler-1484 b Planet Profile

Physical Specs

Radius

2.11 R⊕

Radius (Jupiter)

0.188 R♃

Mass

5.10 M⊕

Mass (Jupiter)

0.016 M♃

Density

2.98 g/cm³

Surface Gravity

1.15 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.431

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

#1806of 1978

top 91.3%

This planet

2.11R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

61 Vir b 2.11 R⊕ TOI-1238 c 2.11 R⊕ Kepler-518 b 2.11 R⊕

Metric	Earth	Kepler-1484 b	Jupiter
Radius (R⊕)	1.00	2.11	11.21
Mass (M⊕)	1.00	5.10	317.83
Density (g/cm³)	5.51	2.98	1.33
Surface Gravity (g)	1.00	1.15	2.53
Insolation (S⊕)	1.00	35.92	0.037

Star Catalogue Identifiers

TIC

TIC 137816475

Gaia DR2

Gaia DR2 2051926226306177792

Gaia DR3

Gaia DR3 2051926226306177792

System

Kepler-1484

Percentile among Sub-Neptune cohort

Radius 2.110 R⊕ · percentile 8 / cohort 1978

Mass 5.100 M⊕ · percentile 9 / cohort 1978

Orbital period 30.45 d · percentile 74 / cohort 1946

Distance 2,879.83 pc · percentile 98 / cohort 1975

ESI 0.431 · percentile 59 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

30.455 days

Semi-major axis

0.1939 AU

Eccentricity

0.000

Inclination

86.35 °

Year Length

A year here lasts approximately 30.45 Earth days (8.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1939 AU.

Transit Fingerprint

Depth

0.047 %

Duration

6.143 h

Impact parameter b

0.367

Rp / R★

0.021449

Transit midpoint (BJD)

2,454,973.7631

Photometric dip

Transit produces a flux drop of 472 ppm lasting ≈ 6.14 h.

Extended Orbital Architecture

Planet / star radius ratio

0.021449

Semi-major axis / stellar radius

14.590

Impact parameter (b)

0.367

Transit mid-time (BJD)

2,454,973.7631

Angular separation (arcsec)

0.06730

Eq. Temperature

624K

(351 °C)

Insolation (S⊕)

35.92

Earth = 1.00

Earth Similarity (ESI)

0.431

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-1484

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,730 K — cooler than the Sun (5,778 K)

Estimated Age

3.98 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.920 R☉

Stellar Mass

0.940 M☉

Metallicity [Fe/H]

-0.17

Extended Stellar Properties

Surface gravity (log g)

4.490 dex

Stellar density

0.961 g/cm³

Metallicity ratio

[Fe/H]

Distance

2,879.83 parsec

Light-years 9,392.74 ly

V-band magnitude

15.35 mag

Voyager-speed travel 165,640,931 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

0.327 mas

Total Proper Motion

4.537 mas/yr

PM Right Ascension

-1.74 mas/yr

PM Declination

-4.19 mas/yr

Galactic Cartesian (pc)

x = 0.303 · y = -0.726 · z = 0.617

Equatorial (J2000)

RA 292.68427° · Dec 38.12626°

Galactic ℓ, b

71.165° · 9.326°

Ecliptic λ, β

305.817° · 58.777°

HTM-20 index

1336936863