Key parameters at a glance
- A radius of 2.81 Earth radii
- A mass of 8.30 Earth masses
- Surface gravity around 1.05 g
- An orbital period of 92.730 days
- Semi-major axis 0.3608 AU
- Equilibrium temperature 276 K (3 °C)
- Distance from Earth 1,436.92 light-years
- Earth Similarity Index 0.713
- Travel time at Voyager 1 speed 25,340,015 years
1 sibling around Kepler-1996
Kepler-1996 c 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-1996 b | Sub-Neptune | 2.26 | 5.73 | 32.376 | 392 | 2023 |
| Kepler-1996 c this | Sub-Neptune | 2.81 | 8.30 | 92.730 | 276 | 2023 |
Kepler-1996 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#732of 1978
top 37.0%
This planet
2.81R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1996 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.81 | 11.21 |
| Mass (M⊕) | 1.00 | 8.30 | 317.83 |
| Density (g/cm³) | 5.51 | 2.06 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.05 | 2.53 |
| Insolation (S⊕) | 1.00 | 1.38 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 164892125
Gaia DR2
Gaia DR2 2107311719368903680
Gaia DR3
Gaia DR3 2107311723669410560
System
Kepler-1996
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 92.73 Earth days (25.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.3608 AU.
Transit Fingerprint
Depth
0.126 %
Duration
6.830 h
Impact parameter b
0.857
Rp / R★
0.038187
Transit midpoint (BJD)
2,455,010.4381
Photometric dip
Transit produces a flux drop of 1,258 ppm lasting ≈ 6.83 h.
Extended Orbital Architecture
Planet / star radius ratio
0.038187
Semi-major axis / stellar radius
60.800
Impact parameter (b)
0.857
Transit mid-time (BJD)
2,455,010.4381
Angular separation (arcsec)
0.81900
Eq. Temperature
276K
(3 °C)
Insolation (S⊕)
1.38
Earth = 1.00
Earth Similarity (ESI)
0.713
0 = alien, 1 = Earth-identical
Within the conservative habitable zone — liquid water is physically possible with adequate atmospheric pressure.
Discovery Paper
Primary reference
Valizadegan et al. 2023Instrument
Kepler CCD Array
Publication
2023-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Kepler (12 shown).
Host System: Kepler-1996
Spectral Class
K-type orange
Effective Temperature
4,580 K — cooler than the Sun (5,778 K)
Estimated Age
14.00 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.675 R☉
Stellar Mass
0.748 M☉
Metallicity [Fe/H]
0.08
Extended Stellar Properties
Surface gravity (log g)
4.641 dex
Stellar density
0.494 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.241 mas
Total Proper Motion
17.707 mas/yr
PM Right Ascension
12.17 mas/yr
PM Declination
12.86 mas/yr
Galactic Cartesian (pc)
x = 0.181 · y = -0.663 · z = 0.726
Equatorial (J2000)
RA 285.25376° · Dec 46.58222°
Galactic ℓ, b
76.776° · 17.798°
Ecliptic λ, β
299.509° · 68.464°
HTM-20 index
-1422437380
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