Key parameters at a glance
- A radius of 2.39 Earth radii
- A mass of 6.29 Earth masses
- Surface gravity around 1.10 g
- An orbital period of 57.293 days
- Semi-major axis 0.2597 AU
- Equilibrium temperature 355 K (82 °C)
- Distance from Earth 2,060.93 light-years
- Earth Similarity Index 0.671
- Travel time at Voyager 1 speed 36,344,456 years
Kepler-1849 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1361of 1978
top 68.8%
This planet
2.39R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1849 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.39 | 11.21 |
| Mass (M⊕) | 1.00 | 6.29 | 317.83 |
| Density (g/cm³) | 5.51 | 2.54 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.10 | 2.53 |
| Insolation (S⊕) | 1.00 | 3.76 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 399821807
Gaia DR2
Gaia DR2 2103867224319533824
Gaia DR3
Gaia DR3 2103867224319533824
System
Kepler-1849
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 57.29 Earth days (15.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2597 AU.
Transit Fingerprint
Depth
0.077 %
Duration
4.878 h
Impact parameter b
0.106
Rp / R★
0.024537
Transit midpoint (BJD)
2,454,979.2311
Photometric dip
Transit produces a flux drop of 774 ppm lasting ≈ 4.88 h.
Extended Orbital Architecture
Planet / star radius ratio
0.024537
Semi-major axis / stellar radius
91.910
Impact parameter (b)
0.106
Transit mid-time (BJD)
2,454,979.2311
Angular separation (arcsec)
0.41100
Eq. Temperature
355K
(82 °C)
Insolation (S⊕)
3.76
Earth = 1.00
Earth Similarity (ESI)
0.671
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure.
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-1849
Spectral Class
K-type orange
Effective Temperature
4,806 K — cooler than the Sun (5,778 K)
Estimated Age
13.50 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.729 R☉
Stellar Mass
0.709 M☉
Metallicity [Fe/H]
-0.10
Extended Stellar Properties
Surface gravity (log g)
4.564 dex
Stellar density
4.474 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.554 mas
Total Proper Motion
6.546 mas/yr
PM Right Ascension
-1.68 mas/yr
PM Declination
6.33 mas/yr
Galactic Cartesian (pc)
x = 0.198 · y = -0.725 · z = 0.659
Equatorial (J2000)
RA 285.29193° · Dec 41.25573°
Galactic ℓ, b
71.617° · 15.801°
Ecliptic λ, β
296.192° · 63.311°
HTM-20 index
1899704672
Similar Worlds
HD 110067 c
Sub-Neptune · K-type orange
Radius 2.39 R⊕ · 104.9 ly
Kepler-152 c
Sub-Neptune · K-type orange
Radius 2.39 R⊕ · 1,438.6 ly
TOI-1184 b
Sub-Neptune · K-type orange
Radius 2.39 R⊕ · 191.1 ly
TOI-1346 b
Sub-Neptune · K-type orange
Radius 2.39 R⊕ · 376.5 ly
HD 73583 c
Sub-Neptune · K-type orange
Radius 2.39 R⊕ · 103.0 ly
Kepler-1788 b
Sub-Neptune · K-type orange
Radius 2.38 R⊕ · 1,827.9 ly