Key parameters at a glance
- A radius of 10.05 Earth radii
- A mass of 106.47 Earth masses
- Surface gravity around 1.05 g
- An orbital period of 4.025 days
- Semi-major axis 0.0451 AU
- Equilibrium temperature 852 K (579 °C)
- Distance from Earth 759.29 light-years
- Earth Similarity Index 0.172
- Travel time at Voyager 1 speed 13,390,157 years
- Almost certainly tidally locked to its host star given the close orbit
K2-295 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1769of 1771
top 99.8%
This planet
10.05R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | K2-295 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 10.05 | 11.21 |
| Mass (M⊕) | 1.00 | 106.47 | 317.83 |
| Density (g/cm³) | 5.51 | 0.61 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.05 | 2.53 |
| Insolation (S⊕) | 1.00 | 97.86 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 106.473 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 610976842
Gaia DR2
Gaia DR2 2564784633279953536
Gaia DR3
Gaia DR3 2564784633279953536
System
K2-295
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.02 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0451 AU.
Transit Fingerprint
Depth
2.188 %
Duration
2.498 h
Impact parameter b
0.170
Rp / R★
0.130400
Transit midpoint (BJD)
2,457,395.4140
Photometric dip
Transit produces a flux drop of 21,878 ppm lasting ≈ 2.50 h.
Extended Orbital Architecture
Planet / star radius ratio
0.130400
Semi-major axis / stellar radius
13.760
Impact parameter (b)
0.170
RV semi-amplitude (K)
54.000 m/s
Transit mid-time (BJD)
2,457,395.4140
Angular separation (arcsec)
0.19400
Eq. Temperature
852K
(579 °C)
Insolation (S⊕)
97.86
Earth = 1.00
Earth Similarity (ESI)
0.172
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
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
Smith et al. 2019Instrument
Kepler CCD Array
Publication
2019-06
Observation locale
Space
Discovery cohort
Planets confirmed in 2018 at K2 (12 shown).
Host System: K2-295
Spectral Class
K-type orange
Effective Temperature
4,444 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.700 R☉
Stellar Mass
0.740 M☉
Metallicity [Fe/H]
0.14
Extended Stellar Properties
Surface gravity (log g)
4.630 dex
Stellar density
3.043 g/cm³
Systemic radial velocity
-16.62 km/s
Rotational v·sin i
2.20 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 15 bands
Astrometric Data
Parallax
4.267 mas
Total Proper Motion
65.159 mas/yr
PM Right Ascension
54.98 mas/yr
PM Declination
-34.96 mas/yr
Galactic Cartesian (pc)
x = 0.935 · y = 0.333 · z = 0.119
Equatorial (J2000)
RA 19.61014° · Dec 6.81673°
Galactic ℓ, b
134.803° · -55.431°
Ecliptic λ, β
20.671° · -1.356°
HTM-20 index
-907473088
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