Key parameters at a glance
- A radius of 3.91 Earth radii
- A mass of 14.50 Earth masses
- Surface gravity around 0.95 g
- An orbital period of 66.416 days
- Semi-major axis 0.3033 AU
- Equilibrium temperature 376 K (103 °C)
- Distance from Earth 3,546.62 light-years
- Earth Similarity Index 0.524
- Travel time at Voyager 1 speed 62,544,646 years
Kepler-1024 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#20of 1978
top 1.0%
This planet
3.91R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1024 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.91 | 11.21 |
| Mass (M⊕) | 1.00 | 14.50 | 317.83 |
| Density (g/cm³) | 5.51 | 1.33 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.95 | 2.53 |
| Insolation (S⊕) | 1.00 | 5.45 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 137349536
Gaia DR2
Gaia DR2 2052666992204482816
Gaia DR3
Gaia DR3 2052666992204482816
System
Kepler-1024
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 66.42 Earth days (18.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.3033 AU.
Transit Fingerprint
Depth
0.205 %
Duration
6.965 h
Impact parameter b
0.371
Rp / R★
0.045698
Transit midpoint (BJD)
2,455,021.1343
Photometric dip
Transit produces a flux drop of 2,053 ppm lasting ≈ 6.97 h.
Extended Orbital Architecture
Planet / star radius ratio
0.045698
Semi-major axis / stellar radius
76.060
Impact parameter (b)
0.371
Transit mid-time (BJD)
2,455,021.1343
Angular separation (arcsec)
0.27900
Eq. Temperature
376K
(103 °C)
Insolation (S⊕)
5.45
Earth = 1.00
Earth Similarity (ESI)
0.524
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
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-1024
Spectral Class
K-type orange
Effective Temperature
5,143 K — cooler than the Sun (5,778 K)
Estimated Age
5.25 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.780 R☉
Stellar Mass
0.810 M☉
Metallicity [Fe/H]
-0.10
Extended Stellar Properties
Surface gravity (log g)
4.570 dex
Stellar density
1.467 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
0.893 mas
Total Proper Motion
4.239 mas/yr
PM Right Ascension
2.03 mas/yr
PM Declination
-3.72 mas/yr
Galactic Cartesian (pc)
x = 0.294 · y = -0.728 · z = 0.619
Equatorial (J2000)
RA 291.95103° · Dec 38.25164°
Galactic ℓ, b
71.012° · 9.897°
Ecliptic λ, β
304.820° · 59.066°
HTM-20 index
1966812670
Similar Worlds
Kepler-1729 b
Sub-Neptune · K-type orange
Radius 3.89 R⊕ · 1,879.2 ly
TOI-942 b
Sub-Neptune · K-type orange
Radius 3.89 R⊕ · 497.7 ly
HIP 4845 b
Sub-Neptune · K-type orange
Radius 3.89 R⊕ · 68.8 ly
Kepler-247 d
Sub-Neptune · K-type orange
Radius 3.94 R⊕ · 2,164.7 ly
Kepler-1661 b
Sub-Neptune · K-type orange
Radius 3.87 R⊕ · 1,339.2 ly
Kepler-278 b
Sub-Neptune · K-type orange
Radius 3.96 R⊕ · 1,445.0 ly