Key parameters at a glance
- A radius of 1.60 Earth radii
- A mass of 3.19 Earth masses
- Surface gravity around 1.25 g
- An orbital period of 1.220 days
- Semi-major axis 0.0204 AU
- Equilibrium temperature 1,252 K (979 °C)
- Distance from Earth 1,737.52 light-years
- Earth Similarity Index 0.228
- Travel time at Voyager 1 speed 30,641,125 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-842 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#570of 1176
top 48.4%
This planet
1.60R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-842 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.60 | 11.21 |
| Mass (M⊕) | 1.00 | 3.19 | 317.83 |
| Density (g/cm³) | 5.51 | 4.28 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.25 | 2.53 |
| Insolation (S⊕) | 1.00 | 588.95 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 424815179
Gaia DR2
Gaia DR2 2129861435845006208
Gaia DR3
Gaia DR3 2129861435845006208
System
Kepler-842
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.22 Earth days (0.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0204 AU.
Transit Fingerprint
Depth
0.049 %
Duration
1.567 h
Impact parameter b
0.166
Rp / R★
0.020250
Transit midpoint (BJD)
2,454,966.4601
Photometric dip
Transit produces a flux drop of 495 ppm lasting ≈ 1.57 h.
Extended Orbital Architecture
Planet / star radius ratio
0.020250
Semi-major axis / stellar radius
6.075
Impact parameter (b)
0.166
Transit mid-time (BJD)
2,454,966.4601
Angular separation (arcsec)
0.03830
Eq. Temperature
1,252K
(979 °C)
Insolation (S⊕)
588.95
Earth = 1.00
Earth Similarity (ESI)
0.228
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-842
Spectral Class
K-type orange
Effective Temperature
4,848 K — cooler than the Sun (5,778 K)
Estimated Age
4.37 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.730 R☉
Stellar Mass
0.780 M☉
Metallicity [Fe/H]
-0.02
Extended Stellar Properties
Surface gravity (log g)
4.600 dex
Stellar density
2.768 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.849 mas
Total Proper Motion
6.346 mas/yr
PM Right Ascension
5.93 mas/yr
PM Declination
2.27 mas/yr
Galactic Cartesian (pc)
x = 0.246 · y = -0.599 · z = 0.762
Equatorial (J2000)
RA 292.32860° · Dec 49.65352°
Galactic ℓ, b
81.631° · 14.639°
Ecliptic λ, β
314.958° · 69.631°
HTM-20 index
747254464
Similar Worlds
EPIC 212499991 b
Super-Earth · K-type orange
Radius 1.60 R⊕ · 924.0 ly
Kepler-994 b
Super-Earth · K-type orange
Radius 1.60 R⊕ · 613.7 ly
Kepler-80 e
Super-Earth · K-type orange
Radius 1.60 R⊕ · 1,205.0 ly
Kepler-1702 b
Super-Earth · K-type orange
Radius 1.60 R⊕ · 2,795.6 ly
HD 219134 b
Super-Earth · K-type orange
Radius 1.60 R⊕ · 21.3 ly
Kepler-1804 b
Super-Earth · K-type orange
Radius 1.60 R⊕ · 1,417.0 ly