Key parameters at a glance
- A radius of 1.51 Earth radii
- A mass of 2.89 Earth masses
- Surface gravity around 1.27 g
- An orbital period of 0.568 days
- Semi-major axis 0.0123 AU
- Equilibrium temperature 1,848 K (1575 °C)
- Distance from Earth 1,876.45 light-years
- Earth Similarity Index 0.147
- Travel time at Voyager 1 speed 33,091,145 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-828 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#730of 1176
top 62.0%
This planet
1.51R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-828 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.51 | 11.21 |
| Mass (M⊕) | 1.00 | 2.89 | 317.83 |
| Density (g/cm³) | 5.51 | 4.61 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.27 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,835.16 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 158386765
Gaia DR2
Gaia DR2 2105474852056221824
Gaia DR3
Gaia DR3 2105474852056221824
System
Kepler-828
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts roughly 13.6 hours long on a nearly circular orbit at a mean orbital distance of 0.0123 AU.
Transit Fingerprint
Depth
0.033 %
Duration
0.987 h
Impact parameter b
0.456
Rp / R★
0.017649
Transit midpoint (BJD)
2,454,967.0625
Photometric dip
Transit produces a flux drop of 335 ppm lasting ≈ 0.99 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017649
Semi-major axis / stellar radius
4.126
Impact parameter (b)
0.456
Transit mid-time (BJD)
2,454,967.0625
Angular separation (arcsec)
0.02130
Eq. Temperature
1,848K
(1575 °C)
Insolation (S⊕)
1,835.16
Earth = 1.00
Earth Similarity (ESI)
0.147
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched. Close-orbiting tidally-locked around a cool host.
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-828
Spectral Class
K-type orange
Effective Temperature
5,039 K — cooler than the Sun (5,778 K)
Estimated Age
4.57 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.770 R☉
Stellar Mass
0.810 M☉
Metallicity [Fe/H]
-0.02
Extended Stellar Properties
Surface gravity (log g)
4.580 dex
Stellar density
2.040 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.709 mas
Total Proper Motion
3.615 mas/yr
PM Right Ascension
-1.32 mas/yr
PM Declination
-3.37 mas/yr
Galactic Cartesian (pc)
x = 0.214 · y = -0.706 · z = 0.675
Equatorial (J2000)
RA 286.88726° · Dec 42.47123°
Galactic ℓ, b
73.257° · 15.176°
Ecliptic λ, β
299.479° · 64.192°
HTM-20 index
-2045055953
Similar Worlds
Kepler-1324 b
Super-Earth · K-type orange
Radius 1.51 R⊕ · 1,571.0 ly
K2-141 b
Super-Earth · K-type orange
Radius 1.51 R⊕ · 201.8 ly
HD 219134 c
Super-Earth · K-type orange
Radius 1.51 R⊕ · 21.3 ly
Kepler-1809 b
Super-Earth · K-type orange
Radius 1.51 R⊕ · 1,335.9 ly
TOI-2345 b
Super-Earth · K-type orange
Radius 1.50 R⊕ · 266.3 ly
Kepler-1853 b
Super-Earth · K-type orange
Radius 1.52 R⊕ · 1,834.1 ly