Key parameters at a glance
- A radius of 1.45 Earth radii
- A mass of 2.70 Earth masses
- Surface gravity around 1.28 g
- An orbital period of 2.140 days
- Semi-major axis 0.0320 AU
- Equilibrium temperature 1,425 K (1152 °C)
- Distance from Earth 2,545.19 light-years
- Earth Similarity Index 0.203
- Travel time at Voyager 1 speed 44,884,498 years
1 sibling around Kepler-280
Kepler-280 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-280 b this | Super-Earth | 1.45 | 2.70 | 2.140 | 1,425 | 2014 |
| Kepler-280 c | Sub-Neptune | 2.01 | 4.70 | 4.807 | 1,088 | 2014 |
Kepler-280 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#837of 1176
top 71.1%
This planet
1.45R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-280 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.45 | 11.21 |
| Mass (M⊕) | 1.00 | 2.70 | 317.83 |
| Density (g/cm³) | 5.51 | 4.87 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.28 | 2.53 |
| Insolation (S⊕) | 1.00 | 821.89 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 159716174
Gaia DR2
Gaia DR2 2101761079737564672
Gaia DR3
Gaia DR3 2101761079737564672
System
Kepler-280
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.14 Earth days (0.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0320 AU.
Transit Fingerprint
Depth
0.027 %
Duration
2.020 h
Impact parameter b
0.330
Rp / R★
0.015141
Transit midpoint (BJD)
2,454,966.6526
Photometric dip
Transit produces a flux drop of 266 ppm lasting ≈ 2.02 h.
Extended Orbital Architecture
Planet / star radius ratio
0.015141
Semi-major axis / stellar radius
8.089
Impact parameter (b)
0.330
Transit mid-time (BJD)
2,454,966.6526
Angular separation (arcsec)
0.04100
Eq. Temperature
1,425K
(1152 °C)
Insolation (S⊕)
821.89
Earth = 1.00
Earth Similarity (ESI)
0.203
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
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-280
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,744 K — cooler than the Sun (5,778 K)
Estimated Age
5.62 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.886 R☉
Stellar Mass
0.962 M☉
Metallicity [Fe/H]
0.12
Extended Stellar Properties
Surface gravity (log g)
4.537 dex
Stellar density
1.080 g/cm³
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.253 mas
Total Proper Motion
22.745 mas/yr
PM Right Ascension
3.49 mas/yr
PM Declination
-22.48 mas/yr
Galactic Cartesian (pc)
x = 0.270 · y = -0.690 · z = 0.671
Equatorial (J2000)
RA 291.39053° · Dec 42.18047°
Galactic ℓ, b
74.404° · 12.025°
Ecliptic λ, β
306.443° · 62.939°
HTM-20 index
-369621197
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Kepler-1226 b
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Kepler-362 c
Super-Earth · G-type yellow (Sun-like)
Radius 1.45 R⊕ · 3,556.8 ly