Key parameters at a glance
- A radius of 1.49 Earth radii
- A mass of 2.82 Earth masses
- Surface gravity around 1.27 g
- An orbital period of 25.886 days
- Semi-major axis 0.1606 AU
- Equilibrium temperature 542 K (269 °C)
- Distance from Earth 2,060.33 light-years
- Earth Similarity Index 0.552
- Travel time at Voyager 1 speed 36,333,873 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1841 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#780of 1176
top 66.2%
This planet
1.49R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1841 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.49 | 11.21 |
| Mass (M⊕) | 1.00 | 2.82 | 317.83 |
| Density (g/cm³) | 5.51 | 4.69 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.27 | 2.53 |
| Insolation (S⊕) | 1.00 | 20.35 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 121329580
Gaia DR2
Gaia DR2 2100629063795587840
Gaia DR3
Gaia DR3 2100629063795587840
System
Kepler-1841
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 25.89 Earth days (7.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1606 AU.
Transit Fingerprint
Depth
0.022 %
Duration
4.350 h
Impact parameter b
0.909
Rp / R★
0.017770
Transit midpoint (BJD)
2,454,990.0383
Photometric dip
Transit produces a flux drop of 217 ppm lasting ≈ 4.35 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017770
Semi-major axis / stellar radius
17.700
Impact parameter (b)
0.909
Transit mid-time (BJD)
2,454,990.0383
Angular separation (arcsec)
0.25400
Eq. Temperature
542K
(269 °C)
Insolation (S⊕)
20.35
Earth = 1.00
Earth Similarity (ESI)
0.552
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-1841
Spectral Class
K-type orange
Effective Temperature
5,190 K — cooler than the Sun (5,778 K)
Estimated Age
11.60 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.899 R☉
Stellar Mass
0.823 M☉
Metallicity [Fe/H]
0.12
Extended Stellar Properties
Surface gravity (log g)
4.446 dex
Stellar density
0.183 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.554 mas
Total Proper Motion
5.181 mas/yr
PM Right Ascension
1.15 mas/yr
PM Declination
-5.05 mas/yr
Galactic Cartesian (pc)
x = 0.231 · y = -0.722 · z = 0.652
Equatorial (J2000)
RA 287.70690° · Dec 40.68522°
Galactic ℓ, b
71.819° · 13.900°
Ecliptic λ, β
299.751° · 62.307°
HTM-20 index
-1781494440
Similar Worlds
KMT-2021-BLG-0912L b
Super-Earth · K-type orange
Radius 1.49 R⊕ · 18,134.3 ly
Kepler-1614 b
Super-Earth · K-type orange
Radius 1.49 R⊕ · 3,885.1 ly
TOI-431 c
Super-Earth · K-type orange
Radius 1.49 R⊕ · 106.2 ly
Kepler-898 b
Super-Earth · K-type orange
Radius 1.49 R⊕ · 1,581.5 ly
Kepler-174 c
Super-Earth · K-type orange
Radius 1.49 R⊕ · 1,254.9 ly
Kepler-1492 b
Super-Earth · K-type orange
Radius 1.49 R⊕ · 1,081.4 ly