Key parameters at a glance
- A radius of 2.13 Earth radii
- A mass of 5.18 Earth masses
- Surface gravity around 1.14 g
- An orbital period of 11.008 days
- Semi-major axis 0.0820 AU
- Equilibrium temperature 488 K (215 °C)
- Distance from Earth 1,526.72 light-years
- Earth Similarity Index 0.538
- Travel time at Voyager 1 speed 26,923,647 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around Kepler-283
Kepler-283 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-283 b this | Sub-Neptune | 2.13 | 5.18 | 11.008 | 488 | 2014 |
| Kepler-283 c | Super-Earth | 1.82 | 3.97 | 92.744 | 240 | 2014 |
Kepler-283 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1765of 1978
top 89.2%
This planet
2.13R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-283 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.13 | 11.21 |
| Mass (M⊕) | 1.00 | 5.18 | 317.83 |
| Density (g/cm³) | 5.51 | 2.95 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.14 | 2.53 |
| Insolation (S⊕) | 1.00 | 16.26 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 270695184
Gaia DR2
Gaia DR2 2128811951996688768
Gaia DR3
Gaia DR3 2128811951996688768
System
Kepler-283
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 11.01 Earth days (3.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0820 AU.
Transit Fingerprint
Depth
0.146 %
Duration
2.087 h
Impact parameter b
0.510
Rp / R★
0.033903
Transit midpoint (BJD)
2,454,976.2263
Photometric dip
Transit produces a flux drop of 1,463 ppm lasting ≈ 2.09 h.
Extended Orbital Architecture
Planet / star radius ratio
0.033903
Semi-major axis / stellar radius
43.185
Impact parameter (b)
0.510
Transit mid-time (BJD)
2,454,976.2263
Angular separation (arcsec)
0.17500
Eq. Temperature
488K
(215 °C)
Insolation (S⊕)
16.26
Earth = 1.00
Earth Similarity (ESI)
0.538
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
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-283
Spectral Class
K-type orange
Effective Temperature
4,351 K — cooler than the Sun (5,778 K)
Estimated Age
3.09 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.566 R☉
Stellar Mass
0.596 M☉
Metallicity [Fe/H]
-0.17
Extended Stellar Properties
Surface gravity (log g)
4.721 dex
Stellar density
0.064 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.108 mas
Total Proper Motion
16.736 mas/yr
PM Right Ascension
3.19 mas/yr
PM Declination
-16.43 mas/yr
Galactic Cartesian (pc)
x = 0.269 · y = -0.615 · z = 0.741
Equatorial (J2000)
RA 293.61374° · Dec 47.83894°
Galactic ℓ, b
80.320° · 13.093°
Ecliptic λ, β
314.939° · 67.628°
HTM-20 index
-1762659103
Similar Worlds
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Kepler-1161 b
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Kepler-942 b
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HD 40307 f
Sub-Neptune · K-type orange
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Kepler-161 b
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HD 39194 d
Sub-Neptune · K-type orange
Radius 2.12 R⊕ · 86.1 ly