Key parameters at a glance
- A radius of 1.67 Earth radii
- A mass of 3.43 Earth masses
- Surface gravity around 1.23 g
- An orbital period of 4.337 days
- Semi-major axis 0.0510 AU
- Equilibrium temperature 996 K (723 °C)
- Distance from Earth 1,306.19 light-years
- Earth Similarity Index 0.290
- Travel time at Voyager 1 speed 23,034,651 years
1 sibling around Kepler-322
Kepler-322 c 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-322 b | Rocky Terrestrial | 1.01 | 1.01 | 1.654 | 1,373 | 2014 |
| Kepler-322 c this | Super-Earth | 1.67 | 3.43 | 4.337 | 996 | 2014 |
Kepler-322 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#452of 1176
top 38.4%
This planet
1.67R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-322 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.67 | 11.21 |
| Mass (M⊕) | 1.00 | 3.43 | 317.83 |
| Density (g/cm³) | 5.51 | 4.05 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.23 | 2.53 |
| Insolation (S⊕) | 1.00 | 203.41 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 123313142
Gaia DR2
Gaia DR2 2117317588719059968
Gaia DR3
Gaia DR3 2117317588719059968
System
Kepler-322
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.34 Earth days (1.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0510 AU.
Transit Fingerprint
Depth
0.038 %
Duration
2.454 h
Impact parameter b
0.230
Rp / R★
0.017613
Transit midpoint (BJD)
2,454,965.8496
Photometric dip
Transit produces a flux drop of 376 ppm lasting ≈ 2.45 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017613
Semi-major axis / stellar radius
13.488
Impact parameter (b)
0.230
Transit mid-time (BJD)
2,454,965.8496
Angular separation (arcsec)
0.12700
Eq. Temperature
996K
(723 °C)
Insolation (S⊕)
203.41
Earth = 1.00
Earth Similarity (ESI)
0.290
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
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-322
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,388 K — cooler than the Sun (5,778 K)
Estimated Age
1.10 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.890 R☉
Stellar Mass
0.908 M☉
Metallicity [Fe/H]
0.12
Extended Stellar Properties
Surface gravity (log g)
4.501 dex
Stellar density
1.640 g/cm³
Systemic radial velocity
-22.96 km/s
Rotational v·sin i
6.30 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.468 mas
Total Proper Motion
7.927 mas/yr
PM Right Ascension
-7.23 mas/yr
PM Declination
3.25 mas/yr
Galactic Cartesian (pc)
x = 0.141 · y = -0.702 · z = 0.698
Equatorial (J2000)
RA 281.34875° · Dec 44.29525°
Galactic ℓ, b
73.516° · 19.587°
Ecliptic λ, β
291.041° · 66.907°
HTM-20 index
-4929108
Similar Worlds
Kepler-300 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.67 R⊕ · 3,582.7 ly
Kepler-288 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.67 R⊕ · 3,894.8 ly
Kepler-1476 b
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Kepler-1252 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.67 R⊕ · 2,116.7 ly
Kepler-24 d
Super-Earth · G-type yellow (Sun-like)
Radius 1.67 R⊕ · 3,773.0 ly
Kepler-1123 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.67 R⊕ · 2,297.2 ly