Key parameters at a glance
- A radius of 2.44 Earth radii
- A mass of 6.53 Earth masses
- Surface gravity around 1.10 g
- An orbital period of 8.196 days
- Semi-major axis 0.0718 AU
- Equilibrium temperature 672 K (399 °C)
- Distance from Earth 2,344.88 light-years
- Earth Similarity Index 0.380
- Travel time at Voyager 1 speed 41,351,996 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1754 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1275of 1978
top 64.4%
This planet
2.44R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1754 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.44 | 11.21 |
| Mass (M⊕) | 1.00 | 6.53 | 317.83 |
| Density (g/cm³) | 5.51 | 2.47 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.10 | 2.53 |
| Insolation (S⊕) | 1.00 | 48.20 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 27532561
Gaia DR2
Gaia DR2 2134972275129562752
Gaia DR3
Gaia DR3 2134972275129562752
System
Kepler-1754
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.20 Earth days (2.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0718 AU.
Transit Fingerprint
Depth
0.079 %
Duration
2.824 h
Impact parameter b
0.252
Rp / R★
0.025049
Transit midpoint (BJD)
2,454,969.6874
Photometric dip
Transit produces a flux drop of 793 ppm lasting ≈ 2.82 h.
Extended Orbital Architecture
Planet / star radius ratio
0.025049
Semi-major axis / stellar radius
22.040
Impact parameter (b)
0.252
Transit mid-time (BJD)
2,454,969.6874
Angular separation (arcsec)
0.09990
Eq. Temperature
672K
(399 °C)
Insolation (S⊕)
48.20
Earth = 1.00
Earth Similarity (ESI)
0.380
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-1754
Spectral Class
K-type orange
Effective Temperature
4,723 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.747 R☉
Stellar Mass
0.734 M☉
Metallicity [Fe/H]
0.08
Extended Stellar Properties
Surface gravity (log g)
4.557 dex
Stellar density
3.014 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.363 mas
Total Proper Motion
6.247 mas/yr
PM Right Ascension
-6.24 mas/yr
PM Declination
0.18 mas/yr
Galactic Cartesian (pc)
x = 0.276 · y = -0.579 · z = 0.767
Equatorial (J2000)
RA 295.45708° · Dec 50.07718°
Galactic ℓ, b
82.930° · 13.010°
Ecliptic λ, β
320.598° · 69.086°
HTM-20 index
-272405818
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