Key parameters at a glance
- A radius of 2.10 Earth radii
- A mass of 5.06 Earth masses
- Surface gravity around 1.15 g
- An orbital period of 5.339 days
- Semi-major axis 0.0525 AU
- Equilibrium temperature 817 K (544 °C)
- Distance from Earth 2,155.94 light-years
- Earth Similarity Index 0.330
- Travel time at Voyager 1 speed 38,019,944 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1529 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1818of 1978
top 91.9%
This planet
2.10R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1529 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.10 | 11.21 |
| Mass (M⊕) | 1.00 | 5.06 | 317.83 |
| Density (g/cm³) | 5.51 | 3.00 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.15 | 2.53 |
| Insolation (S⊕) | 1.00 | 115.77 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 122137575
Gaia DR2
Gaia DR2 2101410850923823488
Gaia DR3
Gaia DR3 2101410850923823488
System
Kepler-1529
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.34 Earth days (1.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0525 AU.
Transit Fingerprint
Depth
0.076 %
Duration
1.651 h
Impact parameter b
0.020
Rp / R★
0.025203
Transit midpoint (BJD)
2,454,965.1422
Photometric dip
Transit produces a flux drop of 756 ppm lasting ≈ 1.65 h.
Extended Orbital Architecture
Planet / star radius ratio
0.025203
Semi-major axis / stellar radius
25.460
Impact parameter (b)
0.020
Transit mid-time (BJD)
2,454,965.1422
Angular separation (arcsec)
0.07940
Eq. Temperature
817K
(544 °C)
Insolation (S⊕)
115.77
Earth = 1.00
Earth Similarity (ESI)
0.330
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.
Discovery Paper
Primary reference
Morton et al. 2016Instrument
Kepler CCD Array
Publication
2016-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at Kepler (12 shown).
Host System: Kepler-1529
Spectral Class
K-type orange
Effective Temperature
5,048 K — cooler than the Sun (5,778 K)
Estimated Age
4.79 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.770 R☉
Stellar Mass
0.810 M☉
Metallicity [Fe/H]
-0.03
Extended Stellar Properties
Surface gravity (log g)
4.580 dex
Stellar density
10.957 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.484 mas
Total Proper Motion
0.644 mas/yr
PM Right Ascension
0.64 mas/yr
PM Declination
0.05 mas/yr
Galactic Cartesian (pc)
x = 0.256 · y = -0.709 · z = 0.657
Equatorial (J2000)
RA 289.87075° · Dec 41.04075°
Galactic ℓ, b
72.851° · 12.560°
Ecliptic λ, β
303.340° · 62.199°
HTM-20 index
-1559593667
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