Key parameters at a glance

A radius of 2.13 Earth radii
A mass of 5.18 Earth masses
Surface gravity around 1.14 g
An orbital period of 7.319 days
Semi-major axis 0.0898 AU
Equilibrium temperature 1,682 K (1409 °C)
Distance from Earth 3,309.24 light-years
Earth Similarity Index 0.147
Travel time at Voyager 1 speed 58,358,515 years

1 sibling around Kepler-1487

Kepler-1487 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-1487 b this	Sub-Neptune	2.13	5.18	7.319	1,682	2016
Kepler-1487 c	Neptune-like	7.97	48.70	35.801	991	2023

Kepler-1487 b Planet Profile

Physical Specs

Radius

2.13 R⊕

Radius (Jupiter)

0.190 R♃

Mass

5.18 M⊕

Mass (Jupiter)

0.016 M♃

Density

2.95 g/cm³

Surface Gravity

1.14 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.147

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

#1765of 1978

top 89.2%

This planet

2.13R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-200 b 2.13 R⊕ Kepler-214 c 2.13 R⊕ HD 40307 f 2.13 R⊕

Metric	Earth	Kepler-1487 b	Jupiter
Radius (R⊕)	1.00	2.13	11.21
Mass (M⊕)	1.00	5.18	317.83
Density (g/cm³)	5.51	2.95	1.33
Surface Gravity (g)	1.00	1.14	2.53
Insolation (S⊕)	1.00	323.29	0.037

Star Catalogue Identifiers

TIC

TIC 184015844

Gaia DR2

Gaia DR2 2073153024144692736

Gaia DR3

Gaia DR3 2073153024144692736

System

Kepler-1487

Percentile among Sub-Neptune cohort

Radius 2.130 R⊕ · percentile 10 / cohort 1978

Mass 5.180 M⊕ · percentile 11 / cohort 1978

Orbital period 7.32 d · percentile 23 / cohort 1946

Distance 1,014.62 pc · percentile 79 / cohort 1975

ESI 0.147 · percentile 2 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

7.319 days

Semi-major axis

0.0898 AU

Eccentricity

0.000

Inclination

89.44 °

Year Length

A year here lasts approximately 7.32 Earth days (2.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0898 AU.

Transit Fingerprint

Depth

0.016 %

Duration

4.839 h

Impact parameter b

0.112

Rp / R★

0.011907

Transit midpoint (BJD)

2,454,970.2185

Photometric dip

Transit produces a flux drop of 157 ppm lasting ≈ 4.84 h.

Extended Orbital Architecture

Planet / star radius ratio

0.011907

Semi-major axis / stellar radius

11.530

Impact parameter (b)

0.112

Transit mid-time (BJD)

2,454,970.2185

Angular separation (arcsec)

0.08850

Eq. Temperature

1,682K

(1409 °C)

Insolation (S⊕)

323.29

Earth = 1.00

Earth Similarity (ESI)

0.147

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-1487

Spectral Class

F-type yellow-white

Effective Temperature

6,541 K — hotter than the Sun (5,778 K)

Estimated Age

1.95 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.630 R☉

Stellar Mass

1.380 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

4.160 dex

Stellar density

0.007 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,014.62 parsec

Light-years 3,309.24 ly

V-band magnitude

13.60 mag

Voyager-speed travel 58,358,515 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.957 mas

Total Proper Motion

14.755 mas/yr

PM Right Ascension

-6.15 mas/yr

PM Declination

-13.41 mas/yr

Galactic Cartesian (pc)

x = 0.336 · y = -0.705 · z = 0.624

Equatorial (J2000)

RA 295.49807° · Dec 38.64445°

Galactic ℓ, b

72.676° · 7.624°

Ecliptic λ, β

310.159° · 58.580°

HTM-20 index

-2029920218