Key parameters at a glance
- A radius of 3.28 Earth radii
- A mass of 10.80 Earth masses
- Surface gravity around 1.00 g
- An orbital period of 9.208 days
- Semi-major axis 0.0828 AU
- Equilibrium temperature 972 K (699 °C)
- Distance from Earth 1,597.76 light-years
- Earth Similarity Index 0.231
- Travel time at Voyager 1 speed 28,176,495 years
2 siblings around Kepler-1530
Kepler-1530 d shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-1530 b | Super-Earth | 1.64 | 3.33 | 2.590 | 1,484 | 2016 |
| Kepler-1530 c | Super-Earth | 1.65 | 3.36 | 5.323 | 1,167 | 2016 |
| Kepler-1530 d this | Sub-Neptune | 3.28 | 10.80 | 9.208 | 972 | 2021 |
Kepler-1530 d Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#294of 1978
top 14.8%
This planet
3.28R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1530 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.28 | 11.21 |
| Mass (M⊕) | 1.00 | 10.80 | 317.83 |
| Density (g/cm³) | 5.51 | 1.68 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.00 | 2.53 |
| Insolation (S⊕) | 1.00 | 69.20 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 298892283
Gaia DR2
Gaia DR2 2130991596358782464
Gaia DR3
Gaia DR3 2130991596358782464
System
Kepler-1530
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 9.21 Earth days (2.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0828 AU.
Transit Fingerprint
Depth
0.124 %
Duration
2.889 h
Impact parameter b
0.743
Rp / R★
0.034428
Transit midpoint (BJD)
2,454,968.8010
Photometric dip
Transit produces a flux drop of 1,243 ppm lasting ≈ 2.89 h.
Extended Orbital Architecture
Planet / star radius ratio
0.034428
Semi-major axis / stellar radius
10.960
Impact parameter (b)
0.743
Transit mid-time (BJD)
2,454,968.8010
Angular separation (arcsec)
0.16900
Eq. Temperature
972K
(699 °C)
Insolation (S⊕)
69.20
Earth = 1.00
Earth Similarity (ESI)
0.231
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
Valizadegan et al. 2022Instrument
Kepler CCD Array
Publication
2022-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2021 at Kepler (12 shown).
Host System: Kepler-1530
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,678 K — cooler than the Sun (5,778 K)
Estimated Age
1.17 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.303 R☉
Stellar Mass
1.015 M☉
Metallicity [Fe/H]
0.20
Extended Stellar Properties
Surface gravity (log g)
4.215 dex
Stellar density
0.294 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.013 mas
Total Proper Motion
6.503 mas/yr
PM Right Ascension
-5.85 mas/yr
PM Declination
2.83 mas/yr
Galactic Cartesian (pc)
x = 0.208 · y = -0.634 · z = 0.745
Equatorial (J2000)
RA 288.16244° · Dec 48.16515°
Galactic ℓ, b
79.077° · 16.552°
Ecliptic λ, β
306.099° · 69.339°
HTM-20 index
545577256
Similar Worlds
Kepler-1080 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.28 R⊕ · 4,510.2 ly
K2-201 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.29 R⊕ · 645.6 ly
TOI-1249 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.27 R⊕ · 455.0 ly
TOI-1117 d
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.27 R⊕ · 546.6 ly
Kepler-1990 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.27 R⊕ · 1,280.9 ly
Kepler-576 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.27 R⊕ · 2,014.2 ly