Key parameters at a glance
- A radius of 1.55 Earth radii
- A mass of 3.00 Earth masses
- Surface gravity around 1.26 g
- An orbital period of 8.848 days
- Semi-major axis 0.0699 AU
- Equilibrium temperature 479 K (206 °C)
- Distance from Earth 722.89 light-years
- Earth Similarity Index 0.610
- Travel time at Voyager 1 speed 12,748,145 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1805 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#669of 1176
top 56.8%
This planet
1.55R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1805 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.55 | 11.21 |
| Mass (M⊕) | 1.00 | 3.00 | 317.83 |
| Density (g/cm³) | 5.51 | 4.47 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.26 | 2.53 |
| Insolation (S⊕) | 1.00 | 12.48 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 120422519
Gaia DR2
Gaia DR2 2103822075621468672
Gaia DR3
Gaia DR3 2103822075621468672
System
Kepler-1805
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.85 Earth days (2.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0699 AU.
Transit Fingerprint
Depth
0.052 %
Duration
2.088 h
Impact parameter b
0.388
Rp / R★
0.019043
Transit midpoint (BJD)
2,454,973.1516
Photometric dip
Transit produces a flux drop of 519 ppm lasting ≈ 2.09 h.
Extended Orbital Architecture
Planet / star radius ratio
0.019043
Semi-major axis / stellar radius
17.000
Impact parameter (b)
0.388
Transit mid-time (BJD)
2,454,973.1516
Angular separation (arcsec)
0.31500
Eq. Temperature
479K
(206 °C)
Insolation (S⊕)
12.48
Earth = 1.00
Earth Similarity (ESI)
0.610
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
Valizadegan et al. 2022Instrument
Kepler CCD Array
Publication
2022-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2021 at Kepler (12 shown).
Host System: Kepler-1805
Spectral Class
K-type orange
Effective Temperature
3,867 K — cooler than the Sun (5,778 K)
Estimated Age
1.65 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.552 R☉
Stellar Mass
0.581 M☉
Metallicity [Fe/H]
0.10
Extended Stellar Properties
Surface gravity (log g)
4.718 dex
Stellar density
9.045 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
4.483 mas
Total Proper Motion
6.866 mas/yr
PM Right Ascension
1.49 mas/yr
PM Declination
6.70 mas/yr
Galactic Cartesian (pc)
x = 0.197 · y = -0.730 · z = 0.655
Equatorial (J2000)
RA 285.08654° · Dec 40.89905°
Galactic ℓ, b
71.213° · 15.807°
Ecliptic λ, β
295.676° · 63.000°
HTM-20 index
1783756477
Similar Worlds
Kepler-1064 b
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Kepler-55 e
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Kepler-1254 b
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Kepler-1228 b
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Kepler-895 b
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Kepler-1899 b
Super-Earth · K-type orange
Radius 1.55 R⊕ · 2,320.6 ly