Key parameters at a glance
- A radius of 1.77 Earth radii
- A mass of 3.78 Earth masses
- Surface gravity around 1.21 g
- An orbital period of 82.295 days
- Semi-major axis 0.3679 AU
- Equilibrium temperature 400 K (127 °C)
- Distance from Earth 4,184.74 light-years
- Earth Similarity Index 0.679
- Travel time at Voyager 1 speed 73,797,966 years
1 sibling around Kepler-1489
Kepler-1489 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-1489 c | Rocky Terrestrial | 0.51 | 0.09 | 0.681 | — | 2024 |
| Kepler-1489 b this | Super-Earth | 1.77 | 3.78 | 82.295 | 400 | 2016 |
Kepler-1489 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#293of 1176
top 24.8%
This planet
1.77R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1489 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.77 | 11.21 |
| Mass (M⊕) | 1.00 | 3.78 | 317.83 |
| Density (g/cm³) | 5.51 | 3.75 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.21 | 2.53 |
| Insolation (S⊕) | 1.00 | 11.89 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 123312978
Gaia DR2
Gaia DR2 2117323498594316544
Gaia DR3
Gaia DR3 2117323498594316544
System
Kepler-1489
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 82.29 Earth days (22.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.3679 AU.
Transit Fingerprint
Depth
0.037 %
Duration
7.009 h
Impact parameter b
0.085
Rp / R★
0.017971
Transit midpoint (BJD)
2,455,045.0073
Photometric dip
Transit produces a flux drop of 371 ppm lasting ≈ 7.01 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017971
Semi-major axis / stellar radius
91.000
Impact parameter (b)
0.085
Transit mid-time (BJD)
2,455,045.0073
Angular separation (arcsec)
0.28700
Eq. Temperature
400K
(127 °C)
Insolation (S⊕)
11.89
Earth = 1.00
Earth Similarity (ESI)
0.679
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-1489
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,655 K — cooler than the Sun (5,778 K)
Estimated Age
4.07 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.900 R☉
Stellar Mass
0.930 M☉
Metallicity [Fe/H]
-0.13
Extended Stellar Properties
Surface gravity (log g)
4.510 dex
Stellar density
1.974 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.751 mas
Total Proper Motion
3.600 mas/yr
PM Right Ascension
-1.17 mas/yr
PM Declination
3.41 mas/yr
Galactic Cartesian (pc)
x = 0.140 · y = -0.700 · z = 0.700
Equatorial (J2000)
RA 281.29580° · Dec 44.46541°
Galactic ℓ, b
73.674° · 19.678°
Ecliptic λ, β
291.033° · 67.082°
HTM-20 index
-54448954
Similar Worlds
Kepler-286 e
Super-Earth · G-type yellow (Sun-like)
Radius 1.77 R⊕ · 4,001.4 ly
Kepler-822 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.77 R⊕ · 2,806.2 ly
Kepler-82 d
Super-Earth · G-type yellow (Sun-like)
Radius 1.77 R⊕ · 2,949.5 ly
rho CrB e
Super-Earth · G-type yellow (Sun-like)
Radius 1.77 R⊕ · 57.0 ly
Kepler-294 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.77 R⊕ · 4,426.0 ly
Kepler-321 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.77 R⊕ · 1,254.2 ly