Key parameters at a glance

A radius of 0.82 Earth radii
A mass of 969.23 Earth masses
Surface gravity around 1,441.45 g
An orbital period of 0.743 days
Semi-major axis 0.0130 AU
Equilibrium temperature 1,026 K (753 °C)
Distance from Earth 1,056.25 light-years
Earth Similarity Index 0.150
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 f 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 this	Rocky Terrestrial	0.82	969.23	0.743	1,026	2012
Kepler-32 e	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 f Planet Profile

Physical Specs

Radius

0.82 R⊕

Radius (Jupiter)

0.073 R♃

Mass

969.23 M⊕

Mass (Jupiter)

3.050 M♃

Density

1.50 g/cm³

Surface Gravity

1,441.45 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.150

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

#465of 570

top 81.4%

This planet

0.82R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-390 b 0.82 R⊕ Kepler-1446 b 0.82 R⊕ Kepler-106 b 0.82 R⊕

Metric	Earth	Kepler-32 f	Jupiter
Radius (R⊕)	1.00	0.82	11.21
Mass (M⊕)	1.00	969.23	317.83
Density (g/cm³)	5.51	1.50	1.33
Surface Gravity (g)	1.00	1,441.45	2.53
Insolation (S⊕)	1.00	349.65	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	969.228 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 Rocky Terrestrial cohort

Radius 0.820 R⊕ · percentile 17 / cohort 570

Mass 969.228 M⊕ · percentile 99 / cohort 570

Orbital period 0.74 d · percentile 7 / cohort 567

Distance 323.85 pc · percentile 43 / cohort 566

ESI 0.150 · percentile 5 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

0.743 days

Semi-major axis

0.0130 AU

Eccentricity

0.000

Inclination

88.93 °

Year Length

A year here lasts roughly 17.8 hours long on a nearly circular orbit at a mean orbital distance of 0.0130 AU.

Transit Fingerprint

Depth

0.022 %

Duration

0.936 h

Impact parameter b

0.160

Rp / R★

0.014200

Transit midpoint (BJD)

2,454,965.5400

Photometric dip

Transit produces a flux drop of 224 ppm lasting ≈ 0.94 h.

Extended Orbital Architecture

Planet / star radius ratio

0.014200

Semi-major axis / stellar radius

2.370

Impact parameter (b)

0.160

Transit mid-time (BJD)

2,454,965.5400

Angular separation (arcsec)

0.04010

Eq. Temperature

1,026K

(753 °C)

Insolation (S⊕)

349.65

Earth = 1.00

Earth Similarity (ESI)

0.150

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched. 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