Key parameters at a glance
- A radius of 2.95 Earth radii
- A mass of 9.01 Earth masses
- Surface gravity around 1.04 g
- An orbital period of 62.303 days
- Semi-major axis 0.3030 AU
- Equilibrium temperature 454 K (181 °C)
- Distance from Earth 2,985.02 light-years
- Earth Similarity Index 0.506
- Travel time at Voyager 1 speed 52,640,804 years
4 siblings around Kepler-154
Kepler-154 c shares its host star with 4 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-154 e | Super-Earth | 1.50 | 2.86 | 3.933 | 1,140 | 2016 |
| Kepler-154 f | Super-Earth | 1.50 | 2.86 | 9.919 | 838 | 2016 |
| Kepler-154 d | Sub-Neptune | 3.84 | 14.10 | 20.550 | 657 | 2016 |
| Kepler-154 b | Sub-Neptune | 2.26 | 5.73 | 33.041 | 561 | 2014 |
| Kepler-154 c this | Sub-Neptune | 2.95 | 9.01 | 62.303 | 454 | 2014 |
Kepler-154 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#557of 1978
top 28.1%
This planet
2.95R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-154 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.95 | 11.21 |
| Mass (M⊕) | 1.00 | 9.01 | 317.83 |
| Density (g/cm³) | 5.51 | 1.93 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.04 | 2.53 |
| Insolation (S⊕) | 1.00 | 12.07 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 416282268
Gaia DR2
Gaia DR2 2133022669212268800
Gaia DR3
Gaia DR3 2133022669212268800
System
Kepler-154
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 62.30 Earth days (17.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.3030 AU.
Transit Fingerprint
Depth
0.086 %
Duration
7.510 h
Impact parameter b
0.700
Rp / R★
0.028719
Transit midpoint (BJD)
2,455,012.0942
Photometric dip
Transit produces a flux drop of 859 ppm lasting ≈ 7.51 h.
Extended Orbital Architecture
Planet / star radius ratio
0.028719
Semi-major axis / stellar radius
47.100
Impact parameter (b)
0.700
Transit mid-time (BJD)
2,455,012.0942
Angular separation (arcsec)
0.33100
Eq. Temperature
454K
(181 °C)
Insolation (S⊕)
12.07
Earth = 1.00
Earth Similarity (ESI)
0.506
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
Discovery Paper
Primary reference
Rowe et al. 2014Instrument
Kepler CCD Array
Publication
2014-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2014 at Kepler (12 shown).
Host System: Kepler-154
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,690 K — cooler than the Sun (5,778 K)
Estimated Age
8.91 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.001 R☉
Stellar Mass
0.933 M☉
Metallicity [Fe/H]
0.02
Extended Stellar Properties
Surface gravity (log g)
4.415 dex
Stellar density
0.820 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.064 mas
Total Proper Motion
5.422 mas/yr
PM Right Ascension
-2.66 mas/yr
PM Declination
4.73 mas/yr
Galactic Cartesian (pc)
x = 0.218 · y = -0.606 · z = 0.765
Equatorial (J2000)
RA 289.78054° · Dec 49.89656°
Galactic ℓ, b
81.168° · 16.242°
Ecliptic λ, β
310.871° · 70.542°
HTM-20 index
953134717
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TOI-1751 b
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Kepler-1889 b
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Radius 2.94 R⊕ · 4,550.3 ly