Key parameters at a glance
- A radius of 1.78 Earth radii
- A mass of 3.83 Earth masses
- Surface gravity around 1.21 g
- An orbital period of 2.441 days
- Semi-major axis 0.0322 AU
- Equilibrium temperature 986 K (713 °C)
- Earth Similarity Index 0.287
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1964 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#281of 1176
top 23.8%
This planet
1.78R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1964 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.78 | 11.21 |
| Mass (M⊕) | 1.00 | 3.83 | 317.83 |
| Density (g/cm³) | 5.51 | 3.73 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.21 | 2.53 |
| Insolation (S⊕) | 1.00 | 223.80 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 27991150
System
Kepler-1964
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.44 Earth days (0.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0322 AU.
Transit Fingerprint
Depth
0.051 %
Duration
0.540 h
Impact parameter b
1.147
Rp / R★
0.189316
Transit midpoint (BJD)
2,454,966.8413
Photometric dip
Transit produces a flux drop of 510 ppm lasting ≈ 0.54 h.
Extended Orbital Architecture
Planet / star radius ratio
0.189316
Semi-major axis / stellar radius
5.140
Impact parameter (b)
1.147
Transit mid-time (BJD)
2,454,966.8413
Eq. Temperature
986K
(713 °C)
Insolation (S⊕)
223.80
Earth = 1.00
Earth Similarity (ESI)
0.287
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-1964
Spectral Class
K-type orange
Effective Temperature
4,803 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.698 R☉
Stellar Mass
0.752 M☉
Metallicity [Fe/H]
-0.08
Extended Stellar Properties
Surface gravity (log g)
4.623 dex
Stellar density
0.431 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 15 bands
Astrometric Data
Total Proper Motion
14.665 mas/yr
PM Right Ascension
-12.22 mas/yr
PM Declination
-8.11 mas/yr
Galactic Cartesian (pc)
x = 0.296 · y = -0.579 · z = 0.760
Equatorial (J2000)
RA 297.05880° · Dec 49.47844°
Galactic ℓ, b
82.877° · 11.816°
Ecliptic λ, β
322.290° · 68.063°
HTM-20 index
1881403630
Similar Worlds
Kepler-1544 b
Super-Earth · K-type orange
Radius 1.78 R⊕ · 1,092.9 ly
Kepler-1410 b
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TOI-1075 b
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HD 15337 b
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