Key parameters at a glance
- A radius of 1.26 Earth radii
- A mass of 2.13 Earth masses
- Surface gravity around 1.34 g
- An orbital period of 2.853 days
- Semi-major axis 0.0370 AU
- Equilibrium temperature 1,016 K (743 °C)
- Distance from Earth 1,301.47 light-years
- Earth Similarity Index 0.304
- Travel time at Voyager 1 speed 22,951,481 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around Kepler-755
Kepler-755 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-755 b | Super-Earth | 1.76 | 3.75 | 1.269 | 1,331 | 2016 |
| Kepler-755 c this | Super-Earth | 1.26 | 2.13 | 2.853 | 1,016 | 2016 |
Kepler-755 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#1149of 1176
top 97.6%
This planet
1.26R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-755 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.26 | 11.21 |
| Mass (M⊕) | 1.00 | 2.13 | 317.83 |
| Density (g/cm³) | 5.51 | 5.85 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.34 | 2.53 |
| Insolation (S⊕) | 1.00 | 302.57 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 239227652
Gaia DR2
Gaia DR2 2076782889978499840
Gaia DR3
Gaia DR3 2076782889978499840
System
Kepler-755
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.85 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0370 AU.
Transit Fingerprint
Depth
0.028 %
Duration
1.435 h
Impact parameter b
0.820
Rp / R★
0.015337
Transit midpoint (BJD)
2,454,966.7966
Photometric dip
Transit produces a flux drop of 277 ppm lasting ≈ 1.44 h.
Extended Orbital Architecture
Planet / star radius ratio
0.015337
Semi-major axis / stellar radius
9.100
Impact parameter (b)
0.820
Transit mid-time (BJD)
2,454,966.7966
Angular separation (arcsec)
0.09270
Eq. Temperature
1,016K
(743 °C)
Insolation (S⊕)
302.57
Earth = 1.00
Earth Similarity (ESI)
0.304
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Morton et al. 2016Instrument
Kepler CCD Array
Publication
2016-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at Kepler (12 shown).
Host System: Kepler-755
Spectral Class
K-type orange
Effective Temperature
5,043 K — cooler than the Sun (5,778 K)
Estimated Age
4.90 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.770 R☉
Stellar Mass
0.820 M☉
Metallicity [Fe/H]
-0.01
Extended Stellar Properties
Surface gravity (log g)
4.580 dex
Stellar density
1.510 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.477 mas
Total Proper Motion
24.256 mas/yr
PM Right Ascension
-15.46 mas/yr
PM Declination
-18.69 mas/yr
Galactic Cartesian (pc)
x = 0.340 · y = -0.672 · z = 0.657
Equatorial (J2000)
RA 296.86093° · Dec 41.09732°
Galactic ℓ, b
75.353° · 7.901°
Ecliptic λ, β
313.774° · 60.519°
HTM-20 index
-958114171
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