Key parameters at a glance
- A radius of 1.96 Earth radii
- A mass of 4.50 Earth masses
- Surface gravity around 1.17 g
- An orbital period of 28.599 days
- Semi-major axis 0.1422 AU
- Equilibrium temperature 298 K (25 °C)
- Distance from Earth 669.00 light-years
- Earth Similarity Index 0.820
- Travel time at Voyager 1 speed 11,797,897 years
- Almost certainly tidally locked to its host star given the close orbit
Context from the literature
Kepler-737b is a super-Earth exoplanet 669 light years away. There is a chance it could be on the inner edge of the habitable zone.
Excerpted from Wikipedia · full article
Kepler-737 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#49of 1176
top 4.1%
This planet
1.96R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-737 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.96 | 11.21 |
| Mass (M⊕) | 1.00 | 4.50 | 317.83 |
| Density (g/cm³) | 5.51 | 3.28 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.17 | 2.53 |
| Insolation (S⊕) | 1.00 | 2.30 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 63068329
Gaia DR2
Gaia DR2 2126820324123177472
Gaia DR3
Gaia DR3 2126820324123177472
System
Kepler-737
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 28.60 Earth days (7.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1422 AU.
Transit Fingerprint
Depth
0.159 %
Duration
3.663 h
Impact parameter b
0.894
Rp / R★
0.037451
Transit midpoint (BJD)
2,455,022.9258
Photometric dip
Transit produces a flux drop of 1,585 ppm lasting ≈ 3.66 h.
Extended Orbital Architecture
Planet / star radius ratio
0.037451
Semi-major axis / stellar radius
61.920
Impact parameter (b)
0.894
Transit mid-time (BJD)
2,455,022.9258
Angular separation (arcsec)
0.69300
Eq. Temperature
298K
(25 °C)
Insolation (S⊕)
2.30
Earth = 1.00
Earth Similarity (ESI)
0.820
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Morton et al. 2016Instrument
Kepler CCD Array
Publication
2016-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at Kepler (12 shown).
Host System: Kepler-737
Spectral Class
K-type orange
Effective Temperature
3,813 K — cooler than the Sun (5,778 K)
Estimated Age
3.89 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.480 R☉
Stellar Mass
0.510 M☉
Metallicity [Fe/H]
-0.24
Extended Stellar Properties
Surface gravity (log g)
4.770 dex
Stellar density
5.239 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
4.847 mas
Total Proper Motion
28.240 mas/yr
PM Right Ascension
20.06 mas/yr
PM Declination
-19.88 mas/yr
Galactic Cartesian (pc)
x = 0.257 · y = -0.640 · z = 0.725
Equatorial (J2000)
RA 291.86298° · Dec 46.42916°
Galactic ℓ, b
78.484° · 13.555°
Ecliptic λ, β
310.669° · 66.807°
HTM-20 index
-859287543
Similar Worlds
Kepler-174 b
Super-Earth · K-type orange
Radius 1.96 R⊕ · 1,254.9 ly
Kepler-1460 b
Super-Earth · K-type orange
Radius 1.96 R⊕ · 1,804.4 ly
Kepler-298 b
Super-Earth · K-type orange
Radius 1.96 R⊕ · 1,690.2 ly
Kepler-1816 b
Super-Earth · K-type orange
Radius 1.97 R⊕ · 1,428.0 ly
WASP-84 c
Super-Earth · K-type orange
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K2-285 e
Super-Earth · K-type orange
Radius 1.95 R⊕ · 505.4 ly