Key parameters at a glance
- A radius of 11.95 Earth radii
- A mass of 1,322.17 Earth masses
- Surface gravity around 9.26 g
- An orbital period of 988.881 days
- Semi-major axis 2.0270 AU
- Equilibrium temperature 254 K (-19 °C)
- Distance from Earth 2,724.89 light-years
- Earth Similarity Index 0.493
- Travel time at Voyager 1 speed 48,053,373 years
Context from the literature
Kepler-1704b is a super-Jupiter on a highly eccentric orbit around the star Kepler-1704. It has a mass of 4.51 MJ. The planet's distance from its star varies from 0.16 to 3.9 AU. It is a failed hot Jupiter, having been scattered from its birth orbit to orbit with a periastron just above the tidal circularization distance.
Excerpted from Wikipedia · full article
Kepler-1704 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1522of 1771
top 85.9%
This planet
11.95R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | Kepler-1704 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 11.95 | 11.21 |
| Mass (M⊕) | 1.00 | 1,322.17 | 317.83 |
| Density (g/cm³) | 5.51 | 4.07 | 1.33 |
| Surface Gravity (g) | 1.00 | 9.26 | 2.53 |
| Insolation (S⊕) | 1.00 | 0.34 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 1,322.166 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 350738167
Gaia DR2
Gaia DR2 2136191736602006016
Gaia DR3
Gaia DR3 2136191736602006016
System
Kepler-1704
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 2.71 Earth years on a highly eccentric trajectory at a mean orbital distance of 2.0270 AU.
Transit Fingerprint
Depth
0.506 %
Duration
6.007 h
Impact parameter b
0.370
Rp / R★
0.064400
Transit midpoint (BJD)
2,455,072.2234
Photometric dip
Transit produces a flux drop of 5,060 ppm lasting ≈ 6.01 h.
Extended Orbital Architecture
Planet / star radius ratio
0.064400
Semi-major axis / stellar radius
256.400
Impact parameter (b)
0.370
RV semi-amplitude (K)
190.000 m/s
Transit mid-time (BJD)
2,455,072.2234
Long. of periastron (ω)
82.40°
Angular separation (arcsec)
2.43000
Eq. Temperature
254K
(-19 °C)
Insolation (S⊕)
0.34
Earth = 1.00
Earth Similarity (ESI)
0.493
0 = alien, 1 = Earth-identical
Beyond the outer HZ boundary (too cold) — surface water would be frozen.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
Dalba et al. 2021Instrument
Kepler CCD Array
Publication
2021-10
Observation locale
Space
Discovery cohort
Planets confirmed in 2013 at Kepler (12 shown).
Host System: Kepler-1704
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,746 K — cooler than the Sun (5,778 K)
Estimated Age
7.40 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.697 R☉
Stellar Mass
1.132 M☉
Metallicity [Fe/H]
0.20
Extended Stellar Properties
Surface gravity (log g)
4.031 dex
Stellar density
0.325 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.168 mas
Total Proper Motion
8.382 mas/yr
PM Right Ascension
1.56 mas/yr
PM Declination
-8.24 mas/yr
Galactic Cartesian (pc)
x = 0.227 · y = -0.585 · z = 0.779
Equatorial (J2000)
RA 291.20126° · Dec 51.14424°
Galactic ℓ, b
82.733° · 15.907°
Ecliptic λ, β
314.997° · 71.285°
HTM-20 index
154187825
Similar Worlds
CoRoT-9 b
Gas Giant · G-type yellow (Sun-like)
Radius 11.95 R⊕ · 1,347.0 ly
WASP-21 b
Gas Giant · G-type yellow (Sun-like)
Radius 11.99 R⊕ · 842.9 ly
Kepler-548 b
Gas Giant · G-type yellow (Sun-like)
Radius 11.99 R⊕ · 2,452.0 ly
TOI-1478 b
Gas Giant · G-type yellow (Sun-like)
Radius 11.99 R⊕ · 498.7 ly
NGTS-20 b
Gas Giant · G-type yellow (Sun-like)
Radius 11.99 R⊕ · 1,248.8 ly
PZ Tel b
Gas Giant · G-type yellow (Sun-like)
Radius 11.90 R⊕ · 153.5 ly