Key parameters at a glance
- A radius of 1.18 Earth radii
- A mass of 1.76 Earth masses
- Surface gravity around 1.26 g
- An orbital period of 34.212 days
- Semi-major axis 0.1890 AU
- Equilibrium temperature 427 K (154 °C)
- Distance from Earth 1,122.60 light-years
- Earth Similarity Index 0.711
- Travel time at Voyager 1 speed 19,796,985 years
- Almost certainly tidally locked to its host star given the close orbit
2 siblings around Kepler-332
Kepler-332 d shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-332 b | Rocky Terrestrial | 1.17 | 1.71 | 7.626 | 703 | 2014 |
| Kepler-332 c | Rocky Terrestrial | 1.09 | 1.32 | 15.996 | 550 | 2014 |
| Kepler-332 d this | Rocky Terrestrial | 1.18 | 1.76 | 34.212 | 427 | 2014 |
Kepler-332 d Planet Profile
Physical Specs
Classification
Planet Type
Rocky Terrestrial
Discovery
Size rank in cohort
Rank by radius
#117of 570
top 20.4%
This planet
1.18R⊕
Rocky Terrestrial median
1.01R⊕
Nearest-size peers
| Metric | Earth | Kepler-332 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.18 | 11.21 |
| Mass (M⊕) | 1.00 | 1.76 | 317.83 |
| Density (g/cm³) | 5.51 | 5.89 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.26 | 2.53 |
| Insolation (S⊕) | 1.00 | 7.25 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 158272257
Gaia DR2
Gaia DR2 2130683904901068800
Gaia DR3
Gaia DR3 2130683904901068800
System
Kepler-332
Percentile among Rocky Terrestrial cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 34.21 Earth days (9.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1890 AU.
Transit Fingerprint
Depth
0.027 %
Duration
4.709 h
Impact parameter b
0.510
Rp / R★
0.014995
Transit midpoint (BJD)
2,454,987.5773
Photometric dip
Transit produces a flux drop of 274 ppm lasting ≈ 4.71 h.
Extended Orbital Architecture
Planet / star radius ratio
0.014995
Semi-major axis / stellar radius
53.580
Impact parameter (b)
0.510
Transit mid-time (BJD)
2,454,987.5773
Angular separation (arcsec)
0.54900
Eq. Temperature
427K
(154 °C)
Insolation (S⊕)
7.25
Earth = 1.00
Earth Similarity (ESI)
0.711
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
Rowe et al. 2014Instrument
Kepler CCD Array
Publication
2014-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2014 at Kepler (12 shown).
Host System: Kepler-332
Spectral Class
K-type orange
Effective Temperature
4,955 K — cooler than the Sun (5,778 K)
Estimated Age
2.82 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.720 R☉
Stellar Mass
0.743 M☉
Metallicity [Fe/H]
-0.13
Extended Stellar Properties
Surface gravity (log g)
4.611 dex
Stellar density
2.210 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.877 mas
Total Proper Motion
27.449 mas/yr
PM Right Ascension
-26.82 mas/yr
PM Declination
-5.84 mas/yr
Galactic Cartesian (pc)
x = 0.194 · y = -0.648 · z = 0.736
Equatorial (J2000)
RA 286.66278° · Dec 47.41369°
Galactic ℓ, b
77.954° · 17.204°
Ecliptic λ, β
302.724° · 68.968°
HTM-20 index
-644875230
Similar Worlds
Kepler-1477 b
Rocky Terrestrial · K-type orange
Radius 1.18 R⊕ · 2,220.6 ly
Kepler-847 b
Rocky Terrestrial · K-type orange
Radius 1.18 R⊕ · 1,673.5 ly
Kepler-1537 b
Rocky Terrestrial · K-type orange
Radius 1.18 R⊕ · 1,687.2 ly
Kepler-1430 b
Rocky Terrestrial · K-type orange
Radius 1.18 R⊕ · 2,855.6 ly
Kepler-1512 b
Rocky Terrestrial · K-type orange
Radius 1.18 R⊕ · 528.4 ly
Kepler-1694 b
Rocky Terrestrial · K-type orange
Radius 1.18 R⊕ · 1,674.3 ly