Key parameters at a glance

A radius of 1.50 Earth radii
A mass of 4.08 Earth masses
Surface gravity around 1.81 g
An orbital period of 2.896 days
Semi-major axis 0.0330 AU
Equilibrium temperature 652 K (379 °C)
Distance from Earth 1,056.25 light-years
Earth Similarity Index 0.186
Travel time at Voyager 1 speed 18,626,905 years
Almost certainly tidally locked to its host star given the close orbit

4 siblings around Kepler-32

Kepler-32 e shares its host star with 4 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-32 f	Rocky Terrestrial	0.82	969.23	0.743	1,026	2012
Kepler-32 e this	Super-Earth	1.50	4.08	2.896	652	2012
Kepler-32 b	Sub-Neptune	2.20	1,303.00	5.901	514	2011
Kepler-32 c	Sub-Neptune	2.00	158.90	8.752	451	2011
Kepler-32 d	Sub-Neptune	2.70	39.91	22.780	328	2012

Kepler-32 e Planet Profile

Physical Specs

Radius

1.50 R⊕

Radius (Jupiter)

0.134 R♃

Mass

4.08 M⊕

Mass (Jupiter)

0.013 M♃

Density

0.09 g/cm³

Surface Gravity

1.81 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.186

HZ Position Inner

Controversial No

Discovery

Year 2012

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#748of 1176

top 63.5%

This planet

1.50R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-180 b 1.50 R⊕ Kepler-273 b 1.50 R⊕ Kepler-207 c 1.50 R⊕

Metric	Earth	Kepler-32 e	Jupiter
Radius (R⊕)	1.00	1.50	11.21
Mass (M⊕)	1.00	4.08	317.83
Density (g/cm³)	5.51	0.09	1.33
Surface Gravity (g)	1.00	1.81	2.53
Insolation (S⊕)	1.00	56.65	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	4.082 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 273590427

Gaia DR2

Gaia DR2 2080287892525359872

Gaia DR3

Gaia DR3 2080287892525359872

System

Kepler-32

Percentile among Super-Earth cohort

Radius 1.500 R⊕ · percentile 35 / cohort 1176

Mass 4.082 M⊕ · percentile 77 / cohort 1176

Orbital period 2.90 d · percentile 20 / cohort 1164

Distance 323.85 pc · percentile 34 / cohort 1171

ESI 0.186 · percentile 10 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

2.896 days

Semi-major axis

0.0330 AU

Eccentricity

0.000

Inclination

89.65 °

Year Length

A year here lasts approximately 2.90 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0330 AU.

Transit Fingerprint

Depth

0.067 %

Duration

1.272 h

Impact parameter b

0.082

Rp / R★

0.025900

Transit midpoint (BJD)

2,454,966.6100

Photometric dip

Transit produces a flux drop of 671 ppm lasting ≈ 1.27 h.

Extended Orbital Architecture

Planet / star radius ratio

0.025900

Semi-major axis / stellar radius

13.500

Impact parameter (b)

0.082

Transit mid-time (BJD)

2,454,966.6100

Angular separation (arcsec)

0.10200

Eq. Temperature

652K

(379 °C)

Insolation (S⊕)

56.65

Earth = 1.00

Earth Similarity (ESI)

0.186

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.

Discovery Paper

Primary reference

Swift et al. 2013

Instrument

Kepler CCD Array

Publication

2013-02

Observation locale

Space

Discovery cohort

Planets confirmed in 2012 at Kepler (12 shown).

Kepler-54 c · Rocky Terrestrial Kepler-49 c · Sub-Neptune Kepler-55 b · Sub-Neptune Kepler-49 b · Sub-Neptune Kepler-81 c · Sub-Neptune Kepler-55 c · Sub-Neptune Kepler-52 c · Super-Earth Kepler-83 c · Sub-Neptune Kepler-32 d · Sub-Neptune Kepler-83 b · Sub-Neptune Kepler-54 b · Sub-Neptune Kepler-80 c · Sub-Neptune

Host System: Kepler-32

Spectral Class

M-type red dwarf

Effective Temperature

3,900 K — cooler than the Sun (5,778 K)

Estimated Age

5.60 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.530 R☉

Stellar Mass

0.580 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.640 dex

Stellar density

4.215 g/cm³

Systemic radial velocity

-32.50 km/s

Metallicity ratio

[Fe/H]

Distance

323.85 parsec

Light-years 1,056.25 ly

V-band magnitude

16.36 mag

Voyager-speed travel 18,626,905 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

3.059 mas

Total Proper Motion

23.904 mas/yr

PM Right Ascension

-13.62 mas/yr

PM Declination

19.65 mas/yr

Galactic Cartesian (pc)

x = 0.321 · y = -0.608 · z = 0.726

Equatorial (J2000)

RA 297.84231° · Dec 46.57436°

Galactic ℓ, b

80.539° · 9.962°

Ecliptic λ, β

320.060° · 65.247°

HTM-20 index

1078132826