Key parameters at a glance
- A radius of 10.76 Earth radii
- A mass of 200.22 Earth masses
- Surface gravity around 1.73 g
- An orbital period of 7.341 days
- Semi-major axis 0.0781 AU
- Equilibrium temperature 1,078 K (805 °C)
- Distance from Earth 3,840.65 light-years
- Earth Similarity Index 0.139
- Travel time at Voyager 1 speed 67,729,859 years
Kepler-74 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1699of 1771
top 95.9%
This planet
10.76R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | Kepler-74 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 10.76 | 11.21 |
| Mass (M⊕) | 1.00 | 200.22 | 317.83 |
| Density (g/cm³) | 5.51 | 0.88 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.73 | 2.53 |
| Insolation (S⊕) | 1.00 | 337.68 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 200.220 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 137903329
Gaia DR2
Gaia DR2 2077586873492185344
Gaia DR3
Gaia DR3 2077586873492185344
System
Kepler-74
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 7.34 Earth days (2.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0781 AU.
Transit Fingerprint
Depth
0.868 %
Duration
3.082 h
Impact parameter b
0.685
Rp / R★
0.091200
Transit midpoint (BJD)
2,455,187.5674
Photometric dip
Transit produces a flux drop of 8,680 ppm lasting ≈ 3.08 h.
Extended Orbital Architecture
Planet / star radius ratio
0.091200
Semi-major axis / stellar radius
15.470
Impact parameter (b)
0.685
RV semi-amplitude (K)
59.000 m/s
Transit mid-time (BJD)
2,455,187.5674
Long. of periastron (ω)
64.00°
Angular separation (arcsec)
0.06630
Eq. Temperature
1,078K
(805 °C)
Insolation (S⊕)
337.68
Earth = 1.00
Earth Similarity (ESI)
0.139
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
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
Hebrard et al. 2013Instrument
Kepler CCD Array
Publication
2013-06
Observation locale
Space
Discovery cohort
Planets confirmed in 2013 at Kepler (12 shown).
Host System: Kepler-74
Spectral Class
F-type yellow-white
Effective Temperature
6,000 K — hotter than the Sun (5,778 K)
Estimated Age
0.80 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.120 R☉
Stellar Mass
1.180 M☉
Metallicity [Fe/H]
0.42
Extended Stellar Properties
Surface gravity (log g)
4.440 dex
Stellar density
1.300 g/cm³
Systemic radial velocity
19.37 km/s
Rotational v·sin i
5.00 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.821 mas
Total Proper Motion
4.975 mas/yr
PM Right Ascension
-1.54 mas/yr
PM Declination
-4.73 mas/yr
Galactic Cartesian (pc)
x = 0.294 · y = -0.690 · z = 0.661
Equatorial (J2000)
RA 293.09253° · Dec 41.35551°
Galactic ℓ, b
74.227° · 10.521°
Ecliptic λ, β
308.454° · 61.747°
HTM-20 index
1748864370
Similar Worlds
WASP-32 b
Gas Giant · F-type yellow-white
Radius 10.76 R⊕ · 900.2 ly
DMPP-8 b
Gas Giant · F-type yellow-white
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Kepler-419 b
Gas Giant · F-type yellow-white
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TOI-4214 b
Gas Giant · F-type yellow-white
Radius 10.68 R⊕ · 1,131.4 ly
HAT-P-2 b
Gas Giant · F-type yellow-white
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HD 108147 b
Gas Giant · F-type yellow-white
Radius 10.90 R⊕ · 126.9 ly