Key parameters at a glance
- A radius of 2.67 Earth radii
- A mass of 8.46 Earth masses
- Surface gravity around 1.19 g
- An orbital period of 16.239 days
- Semi-major axis 0.1261 AU
- Equilibrium temperature 711 K (438 °C)
- Distance from Earth 400.78 light-years
- Earth Similarity Index 0.347
- Travel time at Voyager 1 speed 7,067,821 years
Kepler-96 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#904of 1978
top 45.7%
This planet
2.67R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-96 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.67 | 11.21 |
| Mass (M⊕) | 1.00 | 8.46 | 317.83 |
| Density (g/cm³) | 5.51 | 2.26 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.19 | 2.53 |
| Insolation (S⊕) | 1.00 | 57.52 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 8.460 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 12.968 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
TIC
TIC 169081296
Gaia DR2
Gaia DR2 2073731161099713408
Gaia DR3
Gaia DR3 2073731161099713408
System
Kepler-96
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 16.24 Earth days (4.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1261 AU.
Transit Fingerprint
Depth
0.064 %
Duration
3.817 h
Impact parameter b
0.540
Rp / R★
0.023967
Transit midpoint (BJD)
2,455,004.0190
Photometric dip
Transit produces a flux drop of 643 ppm lasting ≈ 3.82 h.
Extended Orbital Architecture
Planet / star radius ratio
0.023967
Semi-major axis / stellar radius
33.160
Impact parameter (b)
0.540
RV semi-amplitude (K)
2.100 m/s
Transit mid-time (BJD)
2,455,004.0190
Angular separation (arcsec)
1.03000
Eq. Temperature
711K
(438 °C)
Insolation (S⊕)
57.52
Earth = 1.00
Earth Similarity (ESI)
0.347
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
Marcy et al. 2014Instrument
Kepler CCD Array
Publication
2014-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2014 at Kepler (12 shown).
Host System: Kepler-96
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,690 K — cooler than the Sun (5,778 K)
Estimated Age
2.34 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.020 R☉
Stellar Mass
1.000 M☉
Metallicity [Fe/H]
0.04
Extended Stellar Properties
Surface gravity (log g)
4.421 dex
Stellar density
1.540 g/cm³
Systemic radial velocity
-47.12 km/s
Rotational v·sin i
0.50 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
8.109 mas
Total Proper Motion
35.559 mas/yr
PM Right Ascension
32.83 mas/yr
PM Declination
13.65 mas/yr
Galactic Cartesian (pc)
x = 0.346 · y = -0.677 · z = 0.650
Equatorial (J2000)
RA 297.06983° · Dec 40.52520°
Galactic ℓ, b
74.928° · 7.482°
Ecliptic λ, β
313.652° · 59.928°
HTM-20 index
-1473717122
Similar Worlds
Kepler-1978 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.67 R⊕ · 2,822.9 ly
Kepler-1044 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.67 R⊕ · 4,171.4 ly
K2-75 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.67 R⊕ · 1,832.8 ly
HD 155918 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.67 R⊕ · 89.9 ly
Kepler-1453 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.67 R⊕ · 3,901.0 ly
Kepler-292 e
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.67 R⊕ · 3,445.8 ly