Key parameters at a glance
- A radius of 1.54 Earth radii
- A mass of 2.99 Earth masses
- Surface gravity around 1.26 g
- An orbital period of 3.293 days
- Semi-major axis 0.0450 AU
- Equilibrium temperature 1,458 K (1185 °C)
- Distance from Earth 2,211.26 light-years
- Earth Similarity Index 0.194
- Travel time at Voyager 1 speed 38,995,500 years
1 sibling around Kepler-337
Kepler-337 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-337 b this | Super-Earth | 1.54 | 2.99 | 3.293 | 1,458 | 2014 |
| Kepler-337 c | Sub-Neptune | 2.05 | 4.86 | 9.693 | 1,017 | 2014 |
Kepler-337 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#670of 1176
top 56.9%
This planet
1.54R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-337 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.54 | 11.21 |
| Mass (M⊕) | 1.00 | 2.99 | 317.83 |
| Density (g/cm³) | 5.51 | 4.50 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.26 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,589.01 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 159226052
Gaia DR2
Gaia DR2 2127851116271982848
Gaia DR3
Gaia DR3 2127851116271982848
System
Kepler-337
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.29 Earth days (0.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0450 AU.
Transit Fingerprint
Depth
0.008 %
Duration
4.767 h
Impact parameter b
0.030
Rp / R★
0.008980
Transit midpoint (BJD)
2,454,966.0097
Photometric dip
Transit produces a flux drop of 81 ppm lasting ≈ 4.77 h.
Extended Orbital Architecture
Planet / star radius ratio
0.008980
Semi-major axis / stellar radius
3.210
Impact parameter (b)
0.030
Transit mid-time (BJD)
2,454,966.0097
Angular separation (arcsec)
0.06640
Eq. Temperature
1,458K
(1185 °C)
Insolation (S⊕)
1,589.01
Earth = 1.00
Earth Similarity (ESI)
0.194
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-337
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,684 K — cooler than the Sun (5,778 K)
Estimated Age
7.94 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.761 R☉
Stellar Mass
1.081 M☉
Metallicity [Fe/H]
0.07
Extended Stellar Properties
Surface gravity (log g)
4.004 dex
Stellar density
0.190 g/cm³
Systemic radial velocity
-64.57 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.446 mas
Total Proper Motion
4.395 mas/yr
PM Right Ascension
3.67 mas/yr
PM Declination
2.42 mas/yr
Galactic Cartesian (pc)
x = 0.233 · y = -0.639 · z = 0.733
Equatorial (J2000)
RA 290.06051° · Dec 47.16395°
Galactic ℓ, b
78.643° · 14.982°
Ecliptic λ, β
308.394° · 67.946°
HTM-20 index
-424695117
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