Key parameters at a glance
- A radius of 13.40 Earth radii
- A mass of 603.88 Earth masses
- Surface gravity around 3.36 g
- An orbital period of 406.000 days
- Semi-major axis 0.9200 AU
- Distance from Earth 1,292.66 light-years
- Earth Similarity Index 0.362
- Travel time at Voyager 1 speed 22,796,068 years
2 siblings around 2MASS J19383260+4603591
2MASS J19383260+4603591 b shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-451 d | Gas Giant | 13.50 | 559.38 | 43.000 | — | 2022 |
| 2MASS J19383260+4603591 b this | Gas Giant | 13.40 | 603.88 | 406.000 | — | 2015 |
| Kepler-451 c | Gas Giant | 13.50 | 511.70 | 1,460.000 | — | 2022 |
Circumbinary planet
2MASS J19383260+4603591 b orbits a binary-star pair rather than a single host — a minority architecture in the confirmed catalogue.
2MASS J19383260+4603591 b 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 | 2MASS J19383260+4603591 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.40 | 11.21 |
| Mass (M⊕) | 1.00 | 603.88 | 317.83 |
| Density (g/cm³) | 5.51 | 1.38 | 1.33 |
| Surface Gravity (g) | 1.00 | 3.36 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 603.877 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 591.161 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
TIC
TIC 271164763
Gaia DR2
Gaia DR2 2080063931448749824
Gaia DR3
Gaia DR3 2080063931448749824
System
2MASS J19383260+4603591
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 1.11 Earth years on a highly eccentric trajectory at a mean orbital distance of 0.9200 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.362
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Baran et al. 2015Instrument
Kepler CCD Array
Publication
2015-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2015 at Kepler (12 shown).
Host System: 2MASS J19383260+4603591
Spectral Class
B-type blue-white
Effective Temperature
29,564 K — hotter than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.203 R☉
Stellar Mass
0.480 M☉
Metallicity [Fe/H]
-0.09
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.495 mas
Total Proper Motion
6.965 mas/yr
PM Right Ascension
5.20 mas/yr
PM Declination
-4.64 mas/yr
Galactic Cartesian (pc)
x = 0.289 · y = -0.631 · z = 0.720
Equatorial (J2000)
RA 294.63592° · Dec 46.06641°
Galactic ℓ, b
79.019° · 11.674°
Ecliptic λ, β
314.705° · 65.725°
HTM-20 index
-1217063556
Similar Worlds
Kepler-451 c
Gas Giant · B-type blue-white
Radius 13.50 R⊕ · 1,292.7 ly
Kepler-451 d
Gas Giant · B-type blue-white
Radius 13.50 R⊕ · 1,292.7 ly
HD 97048 b
Gas Giant · B-type blue-white
Radius 13.30 R⊕ · 599.7 ly
V0391 Peg b
Gas Giant · B-type blue-white
Radius 13.10 R⊕ · 3,900.8 ly
ZTF J1230-2655 b
Gas Giant · B-type blue-white
Radius 13.79 R⊕ · 608.9 ly
DP Leo b
Gas Giant · B-type blue-white
Radius 12.70 R⊕ · 997.0 ly