Key parameters at a glance
- A radius of 1.83 Earth radii
- A mass of 4.01 Earth masses
- Surface gravity around 1.20 g
- An orbital period of 5.132 days
- Semi-major axis 0.0497 AU
- Equilibrium temperature 584 K (311 °C)
- Distance from Earth 845.81 light-years
- Earth Similarity Index 0.483
- Travel time at Voyager 1 speed 14,915,926 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1089 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#221of 1176
top 18.7%
This planet
1.83R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1089 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.83 | 11.21 |
| Mass (M⊕) | 1.00 | 4.01 | 317.83 |
| Density (g/cm³) | 5.51 | 3.60 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.20 | 2.53 |
| Insolation (S⊕) | 1.00 | 26.27 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 350810654
Gaia DR2
Gaia DR2 2129928884010551936
Gaia DR3
Gaia DR3 2129928884010551936
System
Kepler-1089
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.13 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0497 AU.
Transit Fingerprint
Depth
0.096 %
Duration
1.631 h
Impact parameter b
0.217
Rp / R★
0.034000
Transit midpoint (BJD)
2,454,965.1593
Photometric dip
Transit produces a flux drop of 962 ppm lasting ≈ 1.63 h.
Extended Orbital Architecture
Planet / star radius ratio
0.034000
Semi-major axis / stellar radius
27.000
Impact parameter (b)
0.217
Transit mid-time (BJD)
2,454,965.1593
Angular separation (arcsec)
0.19200
Eq. Temperature
584K
(311 °C)
Insolation (S⊕)
26.27
Earth = 1.00
Earth Similarity (ESI)
0.483
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. 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-1089
Spectral Class
K-type orange
Effective Temperature
3,753 K — cooler than the Sun (5,778 K)
Estimated Age
3.72 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.490 R☉
Stellar Mass
0.520 M☉
Metallicity [Fe/H]
-0.09
Extended Stellar Properties
Surface gravity (log g)
4.760 dex
Stellar density
4.535 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
3.828 mas
Total Proper Motion
28.641 mas/yr
PM Right Ascension
-15.62 mas/yr
PM Declination
24.01 mas/yr
Galactic Cartesian (pc)
x = 0.235 · y = -0.610 · z = 0.757
Equatorial (J2000)
RA 291.09265° · Dec 49.19017°
Galactic ℓ, b
80.850° · 15.179°
Ecliptic λ, β
312.308° · 69.550°
HTM-20 index
871415158
Similar Worlds
HIP 113103 b
Super-Earth · K-type orange
Radius 1.83 R⊕ · 150.7 ly
Kepler-1938 b
Super-Earth · K-type orange
Radius 1.83 R⊕ · 1,373.6 ly
TOI-2068 b
Super-Earth · K-type orange
Radius 1.82 R⊕ · 172.6 ly
TOI-1782.02
Super-Earth · K-type orange
Radius 1.84 R⊕ · 310.7 ly
Kepler-1413 b
Super-Earth · K-type orange
Radius 1.82 R⊕ · 3,807.8 ly
Kepler-331 b
Super-Earth · K-type orange
Radius 1.82 R⊕ · 1,892.1 ly