Key parameters at a glance
- A radius of 1.33 Earth radii
- A mass of 2.32 Earth masses
- Surface gravity around 1.32 g
- An orbital period of 4.168 days
- Semi-major axis 0.0495 AU
- Equilibrium temperature 962 K (689 °C)
- Distance from Earth 1,164.57 light-years
- Earth Similarity Index 0.323
- Travel time at Voyager 1 speed 20,537,179 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1671 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#1047of 1176
top 88.9%
This planet
1.33R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1671 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.33 | 11.21 |
| Mass (M⊕) | 1.00 | 2.32 | 317.83 |
| Density (g/cm³) | 5.51 | 5.47 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.32 | 2.53 |
| Insolation (S⊕) | 1.00 | 205.00 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 137337090
Gaia DR2
Gaia DR2 2052984785425250176
Gaia DR3
Gaia DR3 2052984785425250176
System
Kepler-1671
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.17 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0495 AU.
Transit Fingerprint
Depth
0.017 %
Duration
2.215 h
Impact parameter b
0.830
Rp / R★
0.011755
Transit midpoint (BJD)
2,454,968.2806
Photometric dip
Transit produces a flux drop of 171 ppm lasting ≈ 2.21 h.
Extended Orbital Architecture
Planet / star radius ratio
0.011755
Semi-major axis / stellar radius
14.540
Impact parameter (b)
0.830
Transit mid-time (BJD)
2,454,968.2806
Angular separation (arcsec)
0.13900
Eq. Temperature
962K
(689 °C)
Insolation (S⊕)
205.00
Earth = 1.00
Earth Similarity (ESI)
0.323
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
Armstrong et al. 2021Instrument
Kepler CCD Array
Publication
2021-07
Observation locale
Space
Discovery cohort
Planets confirmed in 2020 at Kepler (12 shown).
Host System: Kepler-1671
Spectral Class
K-type orange
Effective Temperature
5,136 K — cooler than the Sun (5,778 K)
Estimated Age
2.24 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.930 R☉
Stellar Mass
0.866 M☉
Metallicity [Fe/H]
0.25
Extended Stellar Properties
Surface gravity (log g)
4.439 dex
Stellar density
1.519 g/cm³
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.772 mas
Total Proper Motion
24.856 mas/yr
PM Right Ascension
13.53 mas/yr
PM Declination
-20.85 mas/yr
Galactic Cartesian (pc)
x = 0.286 · y = -0.717 · z = 0.635
Equatorial (J2000)
RA 291.74843° · Dec 39.44678°
Galactic ℓ, b
72.025° · 10.575°
Ecliptic λ, β
305.215° · 60.254°
HTM-20 index
1541841378
Similar Worlds
K2-268 e
Super-Earth · K-type orange
Radius 1.33 R⊕ · 1,069.1 ly
Kepler-220 e
Super-Earth · K-type orange
Radius 1.33 R⊕ · 558.1 ly
K2-148 b
Super-Earth · K-type orange
Radius 1.33 R⊕ · 405.9 ly
Kepler-1190 b
Super-Earth · K-type orange
Radius 1.33 R⊕ · 1,117.1 ly
Kepler-707 b
Super-Earth · K-type orange
Radius 1.33 R⊕ · 1,930.1 ly
Kepler-1987 c
Super-Earth · K-type orange
Radius 1.33 R⊕ · 1,942.9 ly