Key parameters at a glance
- A radius of 1.34 Earth radii
- A mass of 2.36 Earth masses
- Surface gravity around 1.31 g
- An orbital period of 2.634 days
- Semi-major axis 0.0360 AU
- Equilibrium temperature 1,131 K (858 °C)
- Distance from Earth 2,688.54 light-years
- Earth Similarity Index 0.270
- Travel time at Voyager 1 speed 47,412,339 years
1 sibling around Kepler-285
Kepler-285 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-285 b this | Super-Earth | 1.34 | 2.36 | 2.634 | 1,131 | 2014 |
| Kepler-285 c | Rocky Terrestrial | 1.12 | 1.46 | 6.187 | 851 | 2014 |
Kepler-285 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#1010of 1176
top 85.8%
This planet
1.34R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-285 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.34 | 11.21 |
| Mass (M⊕) | 1.00 | 2.36 | 317.83 |
| Density (g/cm³) | 5.51 | 5.39 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.31 | 2.53 |
| Insolation (S⊕) | 1.00 | 428.41 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 26416742
Gaia DR2
Gaia DR2 2129295427874937856
Gaia DR3
Gaia DR3 2129295427874937856
System
Kepler-285
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.63 Earth days (0.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0360 AU.
Transit Fingerprint
Depth
0.026 %
Duration
2.061 h
Impact parameter b
0.090
Rp / R★
0.015996
Transit midpoint (BJD)
2,454,967.5628
Photometric dip
Transit produces a flux drop of 260 ppm lasting ≈ 2.06 h.
Extended Orbital Architecture
Planet / star radius ratio
0.015996
Semi-major axis / stellar radius
9.910
Impact parameter (b)
0.090
Transit mid-time (BJD)
2,454,967.5628
Angular separation (arcsec)
0.04370
Eq. Temperature
1,131K
(858 °C)
Insolation (S⊕)
428.41
Earth = 1.00
Earth Similarity (ESI)
0.270
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-285
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,411 K — cooler than the Sun (5,778 K)
Estimated Age
2.88 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.808 R☉
Stellar Mass
0.915 M☉
Metallicity [Fe/H]
0.17
Extended Stellar Properties
Surface gravity (log g)
4.584 dex
Stellar density
1.500 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.185 mas
Total Proper Motion
13.951 mas/yr
PM Right Ascension
-7.69 mas/yr
PM Declination
-11.64 mas/yr
Galactic Cartesian (pc)
x = 0.244 · y = -0.622 · z = 0.744
Equatorial (J2000)
RA 291.39085° · Dec 48.06554°
Galactic ℓ, b
79.874° · 14.535°
Ecliptic λ, β
311.549° · 68.441°
HTM-20 index
-207424423
Similar Worlds
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K2-188 b
Super-Earth · G-type yellow (Sun-like)
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