Key parameters at a glance
- A radius of 2.53 Earth radii
- A mass of 6.94 Earth masses
- Surface gravity around 1.08 g
- An orbital period of 144.547 days
- Semi-major axis 0.5638 AU
- Equilibrium temperature 303 K (30 °C)
- Distance from Earth 7,615.51 light-years
- Earth Similarity Index 0.738
- Travel time at Voyager 1 speed 134,299,587 years
1 sibling around Kepler-896
Kepler-896 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-896 c | Sub-Neptune | 3.15 | 10.10 | 29.542 | 515 | 2023 |
| Kepler-896 b this | Sub-Neptune | 2.53 | 6.94 | 144.547 | 303 | 2016 |
Kepler-896 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1133of 1978
top 57.2%
This planet
2.53R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-896 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.53 | 11.21 |
| Mass (M⊕) | 1.00 | 6.94 | 317.83 |
| Density (g/cm³) | 5.51 | 2.35 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.08 | 2.53 |
| Insolation (S⊕) | 1.00 | 1.99 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 123490277
Gaia DR2
Gaia DR2 2105221139747765504
Gaia DR3
Gaia DR3 2105221139747765504
System
Kepler-896
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 144.55 Earth days (39.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.5638 AU.
Transit Fingerprint
Depth
0.104 %
Duration
14.962 h
Impact parameter b
0.752
Rp / R★
0.029485
Transit midpoint (BJD)
2,455,098.9528
Photometric dip
Transit produces a flux drop of 1,035 ppm lasting ≈ 14.96 h.
Extended Orbital Architecture
Planet / star radius ratio
0.029485
Semi-major axis / stellar radius
48.400
Impact parameter (b)
0.752
Transit mid-time (BJD)
2,455,098.9528
Angular separation (arcsec)
0.24100
Eq. Temperature
303K
(30 °C)
Insolation (S⊕)
1.99
Earth = 1.00
Earth Similarity (ESI)
0.738
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
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-896
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,262 K — cooler than the Sun (5,778 K)
Estimated Age
5.01 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.810 R☉
Stellar Mass
0.840 M☉
Metallicity [Fe/H]
-0.10
Extended Stellar Properties
Surface gravity (log g)
4.560 dex
Stellar density
0.006 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.398 mas
Total Proper Motion
9.500 mas/yr
PM Right Ascension
-3.45 mas/yr
PM Declination
-8.85 mas/yr
Galactic Cartesian (pc)
x = 0.156 · y = -0.706 · z = 0.691
Equatorial (J2000)
RA 282.43914° · Dec 43.73443°
Galactic ℓ, b
73.236° · 18.660°
Ecliptic λ, β
292.679° · 66.197°
HTM-20 index
-672102039
Similar Worlds
Kepler-903 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.53 R⊕ · 4,465.9 ly
Kepler-105 b
Sub-Neptune · G-type yellow (Sun-like)
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Kepler-727 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.53 R⊕ · 2,713.1 ly
TOI-1136 g
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.53 R⊕ · 275.7 ly
Kepler-153 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.53 R⊕ · 1,498.3 ly
Kepler-313 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.53 R⊕ · 3,520.5 ly