Key parameters at a glance
- A radius of 2.49 Earth radii
- A mass of 6.76 Earth masses
- Surface gravity around 1.09 g
- An orbital period of 43.131 days
- Semi-major axis 0.2360 AU
- Equilibrium temperature 554 K (281 °C)
- Distance from Earth 4,175.61 light-years
- Earth Similarity Index 0.453
- Travel time at Voyager 1 speed 73,636,917 years
3 siblings around Kepler-265
Kepler-265 d shares its host star with 3 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-265 b | Super-Earth | 1.86 | 4.12 | 6.846 | 1,022 | 2014 |
| Kepler-265 c | Sub-Neptune | 2.63 | 7.41 | 17.029 | 755 | 2014 |
| Kepler-265 d this | Sub-Neptune | 2.49 | 6.76 | 43.131 | 554 | 2014 |
| Kepler-265 e | Sub-Neptune | 2.59 | 7.22 | 67.831 | 476 | 2014 |
Kepler-265 d Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1191of 1978
top 60.2%
This planet
2.49R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-265 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.49 | 11.21 |
| Mass (M⊕) | 1.00 | 6.76 | 317.83 |
| Density (g/cm³) | 5.51 | 2.41 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.09 | 2.53 |
| Insolation (S⊕) | 1.00 | 18.94 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 122445076
Gaia DR2
Gaia DR2 2101776885215761152
Gaia DR3
Gaia DR3 2101776885215761152
System
Kepler-265
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 43.13 Earth days (11.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2360 AU.
Transit Fingerprint
Depth
0.045 %
Duration
3.066 h
Impact parameter b
0.690
Rp / R★
0.020464
Transit midpoint (BJD)
2,454,999.2754
Photometric dip
Transit produces a flux drop of 448 ppm lasting ≈ 3.07 h.
Extended Orbital Architecture
Planet / star radius ratio
0.020464
Semi-major axis / stellar radius
51.000
Impact parameter (b)
0.690
Transit mid-time (BJD)
2,454,999.2754
Angular separation (arcsec)
0.18400
Eq. Temperature
554K
(281 °C)
Insolation (S⊕)
18.94
Earth = 1.00
Earth Similarity (ESI)
0.453
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
Discovery Paper
Primary reference
Rowe et al. 2014Instrument
Kepler CCD Array
Publication
2014-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2014 at Kepler (12 shown).
Host System: Kepler-265
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,835 K — hotter than the Sun (5,778 K)
Estimated Age
0.28 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.103 R☉
Stellar Mass
0.970 M☉
Metallicity [Fe/H]
-0.11
Extended Stellar Properties
Surface gravity (log g)
4.326 dex
Stellar density
1.160 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.753 mas
Total Proper Motion
14.530 mas/yr
PM Right Ascension
-3.40 mas/yr
PM Declination
-14.13 mas/yr
Galactic Cartesian (pc)
x = 0.263 · y = -0.704 · z = 0.659
Equatorial (J2000)
RA 290.51048° · Dec 41.24474°
Galactic ℓ, b
73.250° · 12.212°
Ecliptic λ, β
304.457° · 62.252°
HTM-20 index
324541364
Similar Worlds
HD 88986 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.49 R⊕ · 108.5 ly
Kepler-109 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.49 R⊕ · 1,548.8 ly
Kepler-184 d
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.49 R⊕ · 1,990.6 ly
Kepler-11 f
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.49 R⊕ · 2,108.1 ly
Kepler-289 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.49 R⊕ · 2,297.6 ly
Kepler-865 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.49 R⊕ · 1,911.7 ly