Key parameters at a glance
- A radius of 1.36 Earth radii
- A mass of 2.42 Earth masses
- Surface gravity around 1.31 g
- An orbital period of 5.535 days
- Semi-major axis 0.0600 AU
- Equilibrium temperature 1,054 K (781 °C)
- Distance from Earth 3,556.57 light-years
- Earth Similarity Index 0.291
- Travel time at Voyager 1 speed 62,720,075 years
1 sibling around Kepler-373
Kepler-373 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-373 b this | Super-Earth | 1.36 | 2.42 | 5.535 | 1,054 | 2014 |
| Kepler-373 c | Rocky Terrestrial | 1.24 | 2.07 | 16.726 | 729 | 2014 |
Kepler-373 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#981of 1176
top 83.3%
This planet
1.36R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-373 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.36 | 11.21 |
| Mass (M⊕) | 1.00 | 2.42 | 317.83 |
| Density (g/cm³) | 5.51 | 5.29 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.31 | 2.53 |
| Insolation (S⊕) | 1.00 | 453.87 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 299218776
Gaia DR2
Gaia DR2 2133124511477266176
Gaia DR3
Gaia DR3 2133124511477266176
System
Kepler-373
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.54 Earth days (1.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0600 AU.
Transit Fingerprint
Depth
0.026 %
Duration
2.864 h
Impact parameter b
0.160
Rp / R★
0.014566
Transit midpoint (BJD)
2,454,965.7605
Photometric dip
Transit produces a flux drop of 261 ppm lasting ≈ 2.86 h.
Extended Orbital Architecture
Planet / star radius ratio
0.014566
Semi-major axis / stellar radius
15.353
Impact parameter (b)
0.160
Transit mid-time (BJD)
2,454,965.7605
Angular separation (arcsec)
0.05500
Eq. Temperature
1,054K
(781 °C)
Insolation (S⊕)
453.87
Earth = 1.00
Earth Similarity (ESI)
0.291
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. 2014Instrument
Kepler CCD Array
Publication
2014-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2014 at Kepler (12 shown).
Host System: Kepler-373
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,787 K — hotter than the Sun (5,778 K)
Estimated Age
10.96 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.845 R☉
Stellar Mass
0.981 M☉
Metallicity [Fe/H]
0.14
Extended Stellar Properties
Surface gravity (log g)
4.562 dex
Stellar density
0.430 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.888 mas
Total Proper Motion
8.844 mas/yr
PM Right Ascension
-2.67 mas/yr
PM Declination
-8.43 mas/yr
Galactic Cartesian (pc)
x = 0.211 · y = -0.599 · z = 0.773
Equatorial (J2000)
RA 289.38799° · Dec 50.59701°
Galactic ℓ, b
81.740° · 16.745°
Ecliptic λ, β
311.043° · 71.283°
HTM-20 index
162817503
Similar Worlds
K2-407 c
Super-Earth · G-type yellow (Sun-like)
Radius 1.36 R⊕ · 712.2 ly
Kepler-295 d
Super-Earth · G-type yellow (Sun-like)
Radius 1.36 R⊕ · 5,542.0 ly
Kepler-262 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.36 R⊕ · 1,999.8 ly
K2-190 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.36 R⊕ · 524.1 ly
Kepler-1912 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.36 R⊕ · 968.7 ly
K2-200 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.36 R⊕ · 600.6 ly