Key parameters at a glance
- A radius of 2.16 Earth radii
- A mass of 5.31 Earth masses
- Surface gravity around 1.14 g
- An orbital period of 49.277 days
- Semi-major axis 0.2149 AU
- Equilibrium temperature 298 K (25 °C)
- Distance from Earth 1,166.40 light-years
- Earth Similarity Index 0.793
- Travel time at Voyager 1 speed 20,569,504 years
- Almost certainly tidally locked to its host star given the close orbit
Context from the literature
The list of exoplanets detected by the Kepler space telescope contains bodies with a wide variety of properties, with significant ranges in orbital distances, masses, radii, composition, habitability, and host star type. As of June 16 2023, the Kepler space telescope and its follow-up observations have detected 2,778 planets, including hot Jupiters, super-Earths, circumbinary planets, and planets located in the circumstellar habitable zones of their host stars. Kepler has detected over 3,601 unconfirmed planet candidates and 2,165 eclipsing binary stars.
Excerpted from Wikipedia · full article
Kepler-1455 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1731of 1978
top 87.5%
This planet
2.16R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1455 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.16 | 11.21 |
| Mass (M⊕) | 1.00 | 5.31 | 317.83 |
| Density (g/cm³) | 5.51 | 2.90 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.14 | 2.53 |
| Insolation (S⊕) | 1.00 | 1.53 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 27014562
Gaia DR2
Gaia DR2 2135220283720198528
Gaia DR3
Gaia DR3 2135220283720198528
System
Kepler-1455
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 49.28 Earth days (13.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2149 AU.
Transit Fingerprint
Depth
0.113 %
Duration
3.696 h
Impact parameter b
0.514
Rp / R★
0.033276
Transit midpoint (BJD)
2,454,990.0254
Photometric dip
Transit produces a flux drop of 1,133 ppm lasting ≈ 3.70 h.
Extended Orbital Architecture
Planet / star radius ratio
0.033276
Semi-major axis / stellar radius
89.300
Impact parameter (b)
0.514
Transit mid-time (BJD)
2,454,990.0254
Angular separation (arcsec)
0.60100
Eq. Temperature
298K
(25 °C)
Insolation (S⊕)
1.53
Earth = 1.00
Earth Similarity (ESI)
0.793
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure. 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-1455
Spectral Class
K-type orange
Effective Temperature
4,075 K — cooler than the Sun (5,778 K)
Estimated Age
4.17 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.600 R☉
Stellar Mass
0.620 M☉
Metallicity [Fe/H]
-0.02
Extended Stellar Properties
Surface gravity (log g)
4.680 dex
Stellar density
4.078 g/cm³
Rotation period
18.32 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.768 mas
Total Proper Motion
9.289 mas/yr
PM Right Ascension
1.40 mas/yr
PM Declination
-9.18 mas/yr
Galactic Cartesian (pc)
x = 0.260 · y = -0.581 · z = 0.772
Equatorial (J2000)
RA 294.08307° · Dec 50.50276°
Galactic ℓ, b
82.921° · 13.986°
Ecliptic λ, β
318.971° · 69.878°
HTM-20 index
507766572
Similar Worlds
TOI-904 c
Sub-Neptune · K-type orange
Radius 2.17 R⊕ · 150.3 ly
K2-42 b
Sub-Neptune · K-type orange
Radius 2.15 R⊕ · 1,294.6 ly
Kepler-1009 b
Sub-Neptune · K-type orange
Radius 2.17 R⊕ · 1,157.9 ly
Kepler-1329 b
Sub-Neptune · K-type orange
Radius 2.17 R⊕ · 1,917.9 ly
K2-71 b
Sub-Neptune · K-type orange
Radius 2.15 R⊕ · 499.6 ly
Kepler-304 c
Sub-Neptune · K-type orange
Radius 2.17 R⊕ · 1,417.7 ly