Key parameters at a glance
- A radius of 7.66 Earth radii
- A mass of 135.40 Earth masses
- Surface gravity around 2.31 g
- An orbital period of 3.003 days
- Semi-major axis 0.0450 AU
- Equilibrium temperature 1,400 K (1127 °C)
- Distance from Earth 1,604.26 light-years
- Earth Similarity Index 0.125
- Travel time at Voyager 1 speed 28,291,186 years
K2-60 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#170of 574
top 29.4%
This planet
7.66R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | K2-60 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 7.66 | 11.21 |
| Mass (M⊕) | 1.00 | 135.40 | 317.83 |
| Density (g/cm³) | 5.51 | 1.70 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.31 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,212.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 135.396 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 206284139
Gaia DR2
Gaia DR2 2597973387468989568
Gaia DR3
Gaia DR3 2597973387468989568
System
K2-60
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.00 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0450 AU.
Transit Fingerprint
Depth
0.477 %
Duration
3.080 h
Impact parameter b
0.210
Rp / R★
0.063000
Transit midpoint (BJD)
2,456,928.0593
Photometric dip
Transit produces a flux drop of 4,774 ppm lasting ≈ 3.08 h.
Extended Orbital Architecture
Planet / star radius ratio
0.063000
Semi-major axis / stellar radius
7.780
Impact parameter (b)
0.210
RV semi-amplitude (K)
61.000 m/s
Transit mid-time (BJD)
2,456,928.0593
Angular separation (arcsec)
0.09150
Eq. Temperature
1,400K
(1127 °C)
Insolation (S⊕)
1,212.00
Earth = 1.00
Earth Similarity (ESI)
0.125
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
Crossfield et al. 2016Instrument
Kepler CCD Array
Publication
2016-09
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at K2 (12 shown).
Host System: K2-60
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,500 K — cooler than the Sun (5,778 K)
Estimated Age
10.00 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.120 R☉
Stellar Mass
0.970 M☉
Metallicity [Fe/H]
0.01
Extended Stellar Properties
Surface gravity (log g)
4.070 dex
Stellar density
0.990 g/cm³
Systemic radial velocity
-45.48 km/s
Rotational v·sin i
2.20 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 12 bands
Astrometric Data
Parallax
2.005 mas
Total Proper Motion
23.206 mas/yr
PM Right Ascension
8.48 mas/yr
PM Declination
-21.60 mas/yr
Galactic Cartesian (pc)
x = 0.904 · y = -0.354 · z = -0.237
Equatorial (J2000)
RA 338.60623° · Dec -13.73180°
Galactic ℓ, b
48.746° · -55.370°
Ecliptic λ, β
335.113° · -4.407°
HTM-20 index
-388663581
Similar Worlds
Kepler-952 b
Neptune-like · G-type yellow (Sun-like)
Radius 7.65 R⊕ · 4,253.9 ly
Kepler-118 c
Neptune-like · G-type yellow (Sun-like)
Radius 7.68 R⊕ · 1,872.9 ly
K2-87 b
Neptune-like · G-type yellow (Sun-like)
Radius 7.60 R⊕ · 1,602.2 ly
OGLE-2012-BLG-0026L b
Neptune-like · G-type yellow (Sun-like)
Radius 7.72 R⊕ · 13,108.2 ly
HD 134606 d
Neptune-like · G-type yellow (Sun-like)
Radius 7.59 R⊕ · 87.4 ly
55 Cnc f
Neptune-like · G-type yellow (Sun-like)
Radius 7.59 R⊕ · 41.0 ly