Key parameters at a glance
- A radius of 1.51 Earth radii
- A mass of 2.89 Earth masses
- Surface gravity around 1.27 g
- An orbital period of 16.586 days
- Semi-major axis 0.1270 AU
- Equilibrium temperature 821 K (548 °C)
- Distance from Earth 6,737.05 light-years
- Earth Similarity Index 0.367
- Travel time at Voyager 1 speed 118,807,795 years
1 sibling around Kepler-1491
Kepler-1491 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-1491 b this | Super-Earth | 1.51 | 2.89 | 16.586 | 821 | 2016 |
| Kepler-1491 c | Sub-Neptune | 2.44 | 6.53 | 61.570 | 530 | 2023 |
Kepler-1491 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#730of 1176
top 62.0%
This planet
1.51R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1491 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.51 | 11.21 |
| Mass (M⊕) | 1.00 | 2.89 | 317.83 |
| Density (g/cm³) | 5.51 | 4.61 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.27 | 2.53 |
| Insolation (S⊕) | 1.00 | 138.11 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 270617233
Gaia DR2
Gaia DR2 2127985806448631808
Gaia DR3
Gaia DR3 2127985806448631808
System
Kepler-1491
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 16.59 Earth days (4.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1270 AU.
Transit Fingerprint
Depth
0.023 %
Duration
6.899 h
Impact parameter b
0.167
Rp / R★
0.013921
Transit midpoint (BJD)
2,454,966.2787
Photometric dip
Transit produces a flux drop of 231 ppm lasting ≈ 6.90 h.
Extended Orbital Architecture
Planet / star radius ratio
0.013921
Semi-major axis / stellar radius
18.000
Impact parameter (b)
0.167
Transit mid-time (BJD)
2,454,966.2787
Angular separation (arcsec)
0.06150
Eq. Temperature
821K
(548 °C)
Insolation (S⊕)
138.11
Earth = 1.00
Earth Similarity (ESI)
0.367
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
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-1491
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,728 K — cooler than the Sun (5,778 K)
Estimated Age
4.57 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.990 R☉
Stellar Mass
1.000 M☉
Metallicity [Fe/H]
0.06
Extended Stellar Properties
Surface gravity (log g)
4.450 dex
Stellar density
0.401 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.455 mas
Total Proper Motion
2.997 mas/yr
PM Right Ascension
1.04 mas/yr
PM Declination
-2.81 mas/yr
Galactic Cartesian (pc)
x = 0.280 · y = -0.639 · z = 0.716
Equatorial (J2000)
RA 293.62976° · Dec 45.74063°
Galactic ℓ, b
78.398° · 12.152°
Ecliptic λ, β
312.829° · 65.703°
HTM-20 index
-1369680192
Similar Worlds
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Kepler-1885 b
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K2-213 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.51 R⊕ · 1,271.0 ly