Key parameters at a glance
- A radius of 2.14 Earth radii
- A mass of 5.22 Earth masses
- Surface gravity around 1.14 g
- An orbital period of 66.651 days
- Semi-major axis 0.2880 AU
- Equilibrium temperature 308 K (35 °C)
- Distance from Earth 991.51 light-years
- Earth Similarity Index 0.777
- Travel time at Voyager 1 speed 17,485,353 years
Kepler-437 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1755of 1978
top 88.7%
This planet
2.14R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-437 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.14 | 11.21 |
| Mass (M⊕) | 1.00 | 5.22 | 317.83 |
| Density (g/cm³) | 5.51 | 2.93 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.14 | 2.53 |
| Insolation (S⊕) | 1.00 | 2.15 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 273138666
Gaia DR2
Gaia DR2 2078866498869416960
System
Kepler-437
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 66.65 Earth days (18.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2880 AU.
Transit Fingerprint
Depth
0.051 %
Duration
5.590 h
Impact parameter b
0.560
Rp / R★
0.027900
Transit midpoint (BJD)
2,455,670.6876
Photometric dip
Transit produces a flux drop of 511 ppm lasting ≈ 5.59 h.
Extended Orbital Architecture
Planet / star radius ratio
0.027900
Semi-major axis / stellar radius
91.000
Impact parameter (b)
0.560
Transit mid-time (BJD)
2,455,670.6876
Angular separation (arcsec)
0.94700
Eq. Temperature
308K
(35 °C)
Insolation (S⊕)
2.15
Earth = 1.00
Earth Similarity (ESI)
0.777
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure.
Discovery Paper
Primary reference
Torres et al. 2015Instrument
Kepler CCD Array
Publication
2015-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2015 at Kepler (12 shown).
Host System: Kepler-437
Spectral Class
K-type orange
Effective Temperature
4,551 K — cooler than the Sun (5,778 K)
Estimated Age
2.90 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.680 R☉
Stellar Mass
0.707 M☉
Metallicity [Fe/H]
0.00
Extended Stellar Properties
Surface gravity (log g)
4.629 dex
Stellar density
3.180 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Total Proper Motion
8.712 mas/yr
PM Right Ascension
-8.57 mas/yr
PM Declination
-1.58 mas/yr
Galactic Cartesian (pc)
x = 0.330 · y = -0.639 · z = 0.695
Equatorial (J2000)
RA 297.34733° · Dec 44.02692°
Galactic ℓ, b
78.113° · 9.022°
Ecliptic λ, β
316.858° · 63.086°
HTM-20 index
2071921544
Similar Worlds
K2-42 b
Sub-Neptune · K-type orange
Radius 2.15 R⊕ · 1,294.6 ly
Kepler-622 b
Sub-Neptune · K-type orange
Radius 2.13 R⊕ · 928.8 ly
K2-71 b
Sub-Neptune · K-type orange
Radius 2.15 R⊕ · 499.6 ly
Kepler-1161 b
Sub-Neptune · K-type orange
Radius 2.13 R⊕ · 1,786.4 ly
Kepler-61 b
Sub-Neptune · K-type orange
Radius 2.15 R⊕ · 1,092.9 ly
Kepler-566 b
Sub-Neptune · K-type orange
Radius 2.15 R⊕ · 1,840.4 ly