Key parameters at a glance
- A radius of 1.55 Earth radii
- A mass of 3.03 Earth masses
- Surface gravity around 1.25 g
- An orbital period of 4.383 days
- Distance from Earth 438.98 light-years
- Earth Similarity Index 0.879
- Travel time at Voyager 1 speed 7,741,352 years
- Almost certainly tidally locked to its host star given the close orbit
2 siblings around K2-165
K2-165 c shares its host star with 2 other confirmed planets. Side-by-side measurements below.
K2-165 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#649of 1176
top 55.1%
This planet
1.55R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | K2-165 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.55 | 11.21 |
| Mass (M⊕) | 1.00 | 3.03 | 317.83 |
| Density (g/cm³) | 5.51 | 4.44 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.25 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Star Catalogue Identifiers
TIC
TIC 149969625
Gaia DR2
Gaia DR2 3700016198387202304
Gaia DR3
Gaia DR3 3700016198387202304
System
K2-165
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.38 Earth days (1.2% of a terrestrial year).
Transit Fingerprint
Rp / R★
0.017725
Transit midpoint (BJD)
2,457,584.2131
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.879
0 = alien, 1 = Earth-identical
Insufficient insolation data. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Mayo et al. 2018Instrument
Kepler CCD Array
Publication
2018-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2018 at K2 (12 shown).
Host System: K2-165
Spectral Class
K-type orange
Effective Temperature
5,185 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.804 R☉
Stellar Mass
0.835 M☉
Metallicity [Fe/H]
-0.05
Extended Stellar Properties
Surface gravity (log g)
4.460 dex
Stellar density
2.082 g/cm³
Systemic radial velocity
-0.30 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
7.402 mas
Total Proper Motion
32.614 mas/yr
PM Right Ascension
29.17 mas/yr
PM Declination
-14.59 mas/yr
Galactic Cartesian (pc)
x = -0.996 · y = -0.085 · z = 0.017
Equatorial (J2000)
RA 184.90049° · Dec 0.96833°
Galactic ℓ, b
285.334° · 62.747°
Ecliptic λ, β
184.110° · 2.836°
HTM-20 index
-1989834815
Similar Worlds
Kepler-1899 b
Super-Earth · K-type orange
Radius 1.55 R⊕ · 2,320.6 ly
Kepler-1064 b
Super-Earth · K-type orange
Radius 1.55 R⊕ · 1,219.8 ly
Kepler-55 e
Super-Earth · K-type orange
Radius 1.55 R⊕ · 1,887.8 ly
Kepler-1254 b
Super-Earth · K-type orange
Radius 1.55 R⊕ · 2,031.4 ly
TOI-238 b
Super-Earth · K-type orange
Radius 1.56 R⊕ · 262.7 ly
TOI-5736 b
Super-Earth · K-type orange
Radius 1.56 R⊕ · 301.2 ly