Key parameters at a glance
- A radius of 13.40 Earth radii
- A mass of 657.00 Earth masses
- Surface gravity around 3.66 g
- An orbital period of 982.000 days
- Semi-major axis 1.8983 AU
- Distance from Earth 1,000.44 light-years
- Earth Similarity Index 0.367
- Travel time at Voyager 1 speed 17,642,836 years
4 siblings around Kepler-48
Kepler-48 e shares its host star with 4 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-48 b | Super-Earth | 1.88 | 3.94 | 4.778 | 932 | 2012 |
| Kepler-48 c | Sub-Neptune | 2.71 | 14.61 | 9.674 | 736 | 2012 |
| Kepler-48 d | Sub-Neptune | 2.04 | 7.93 | 42.896 | 448 | 2014 |
| Kepler-48 e this | Gas Giant | 13.40 | 657.00 | 982.000 | — | 2014 |
| Kepler-48 f | Gas Giant | 13.80 | 298.58 | 5,219.682 | — | 2023 |
Kepler-48 e Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#730of 1771
top 41.2%
This planet
13.40R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | Kepler-48 e | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.40 | 11.21 |
| Mass (M⊕) | 1.00 | 657.00 | 317.83 |
| Density (g/cm³) | 5.51 | 1.50 | 1.33 |
| Surface Gravity (g) | 1.00 | 3.66 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 657.000 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 687.326 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
TIC
TIC 171882123
Gaia DR2
Gaia DR2 2075112109039378688
Gaia DR3
Gaia DR3 2075112109039378688
System
Kepler-48
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 2.69 Earth years on a nearly circular orbit at a mean orbital distance of 1.8983 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.367
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Marcy et al. 2014Instrument
HIRES Spectrometer
Publication
2014-02
Observation locale
Ground
Discovery cohort
Planets confirmed in 2014 at W. M. Keck Observatory (11 shown).
Host System: Kepler-48
Spectral Class
K-type orange
Effective Temperature
5,194 K — cooler than the Sun (5,778 K)
Estimated Age
3.14 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.890 R☉
Stellar Mass
0.880 M☉
Metallicity [Fe/H]
0.17
Extended Stellar Properties
Surface gravity (log g)
4.487 dex
Stellar density
1.980 g/cm³
Systemic radial velocity
-10.53 km/s
Rotational v·sin i
0.50 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
3.231 mas
Total Proper Motion
24.275 mas/yr
PM Right Ascension
13.23 mas/yr
PM Declination
-20.36 mas/yr
Galactic Cartesian (pc)
x = 0.368 · y = -0.660 · z = 0.655
Equatorial (J2000)
RA 299.13931° · Dec 40.94894°
Galactic ℓ, b
76.090° · 6.339°
Ecliptic λ, β
316.862° · 59.737°
HTM-20 index
-213247919
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