Key parameters at a glance

A radius of 1.01 Earth radii
A mass of 1.01 Earth masses
Surface gravity around 0.99 g
An orbital period of 1.654 days
Semi-major axis 0.0270 AU
Equilibrium temperature 1,373 K (1100 °C)
Distance from Earth 1,306.19 light-years
Earth Similarity Index 0.227
Travel time at Voyager 1 speed 23,034,651 years

1 sibling around Kepler-322

Kepler-322 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-322 b this	Rocky Terrestrial	1.01	1.01	1.654	1,373	2014
Kepler-322 c	Super-Earth	1.67	3.43	4.337	996	2014

Kepler-322 b Planet Profile

Physical Specs

Radius

1.01 R⊕

Radius (Jupiter)

0.090 R♃

Mass

1.01 M⊕

Mass (Jupiter)

0.003 M♃

Density

5.39 g/cm³

Surface Gravity

0.99 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.227

HZ Position Inner

Controversial No

Discovery

Year 2014

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#326of 570

top 57.0%

This planet

1.01R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1278 b 1.01 R⊕ Kepler-282 b 1.01 R⊕ Kepler-398 c 1.01 R⊕

Metric	Earth	Kepler-322 b	Jupiter
Radius (R⊕)	1.00	1.01	11.21
Mass (M⊕)	1.00	1.01	317.83
Density (g/cm³)	5.51	5.39	1.33
Surface Gravity (g)	1.00	0.99	2.53
Insolation (S⊕)	1.00	735.18	0.037

Star Catalogue Identifiers

TIC

TIC 123313142

Gaia DR2

Gaia DR2 2117317588719059968

Gaia DR3

Gaia DR3 2117317588719059968

System

Kepler-322

Percentile among Rocky Terrestrial cohort

Radius 1.010 R⊕ · percentile 42 / cohort 570

Mass 1.010 M⊕ · percentile 37 / cohort 570

Orbital period 1.65 d · percentile 19 / cohort 567

Distance 400.48 pc · percentile 53 / cohort 566

ESI 0.227 · percentile 18 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

1.654 days

Semi-major axis

0.0270 AU

Eccentricity

0.000

Inclination

88.21 °

Year Length

A year here lasts approximately 1.65 Earth days (0.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0270 AU.

Transit Fingerprint

Depth

0.014 %

Duration

1.672 h

Impact parameter b

0.380

Rp / R★

0.010657

Transit midpoint (BJD)

2,454,965.1917

Photometric dip

Transit produces a flux drop of 135 ppm lasting ≈ 1.67 h.

Extended Orbital Architecture

Planet / star radius ratio

0.010657

Semi-major axis / stellar radius

2.950

Impact parameter (b)

0.380

Transit mid-time (BJD)

2,454,965.1917

Angular separation (arcsec)

0.06740

Eq. Temperature

1,373K

(1100 °C)

Insolation (S⊕)

735.18

Earth = 1.00

Earth Similarity (ESI)

0.227

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Rowe et al. 2014

Instrument

Kepler CCD Array

Publication

2014-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2014 at Kepler (12 shown).

Kepler-186 e · Super-Earth Kepler-395 c · Super-Earth Kepler-220 e · Super-Earth Kepler-249 d · Super-Earth Kepler-296 f · Super-Earth Kepler-367 c · Rocky Terrestrial Kepler-296 e · Super-Earth Kepler-155 c · Sub-Neptune Kepler-138 d · Super-Earth Kepler-333 c · Rocky Terrestrial Kepler-331 d · Super-Earth Kepler-267 d · Sub-Neptune

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]

Distance

400.48 parsec

Light-years 1,306.19 ly

V-band magnitude

13.69 mag

Voyager-speed travel 23,034,651 yr

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