Key parameters at a glance
- A radius of 13.38 Earth radii
- A mass of 568.92 Earth masses
- Surface gravity around 3.18 g
- An orbital period of 1.482 days
- Semi-major axis 0.0246 AU
- Equilibrium temperature 1,480 K (1207 °C)
- Distance from Earth 1,175.18 light-years
- Earth Similarity Index 0.097
- Travel time at Voyager 1 speed 20,724,342 years
- Almost certainly tidally locked to its host star given the close orbit
TrES-5 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#783of 1771
top 44.2%
This planet
13.38R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TrES-5 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.38 | 11.21 |
| Mass (M⊕) | 1.00 | 568.92 | 317.83 |
| Density (g/cm³) | 5.51 | 1.31 | 1.33 |
| Surface Gravity (g) | 1.00 | 3.18 | 2.53 |
| Insolation (S⊕) | 1.00 | 442.99 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 568.916 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 233948455
Gaia DR2
Gaia DR2 2188601779406152448
Gaia DR3
Gaia DR3 2188601779406152448
System
TrES-5
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.48 Earth days (0.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0246 AU.
Transit Fingerprint
Depth
2.192 %
Duration
1.595 h
Impact parameter b
0.577
Rp / R★
0.143000
Transit midpoint (BJD)
2,456,458.5922
Photometric dip
Transit produces a flux drop of 21,920 ppm lasting ≈ 1.60 h.
Extended Orbital Architecture
Planet / star radius ratio
0.143000
Semi-major axis / stellar radius
6.100
Impact parameter (b)
0.577
RV semi-amplitude (K)
339.800 m/s
Transit mid-time (BJD)
2,456,458.5922
Angular separation (arcsec)
0.06820
Eq. Temperature
1,480K
(1207 °C)
Insolation (S⊕)
442.99
Earth = 1.00
Earth Similarity (ESI)
0.097
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched. Close-orbiting tidally-locked around a cool host.
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
Mandushev et al. 2011Instrument
2K CCD Sensor
Publication
2011-11
Observation locale
Ground
Host System: TrES-5
Spectral Class
K-type orange
Effective Temperature
5,171 K — cooler than the Sun (5,778 K)
Estimated Age
7.40 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.868 R☉
Stellar Mass
0.901 M☉
Metallicity [Fe/H]
0.20
Extended Stellar Properties
Surface gravity (log g)
4.517 dex
Stellar density
1.945 g/cm³
Rotational v·sin i
3.80 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.746 mas
Total Proper Motion
32.110 mas/yr
PM Right Ascension
9.11 mas/yr
PM Declination
30.79 mas/yr
Galactic Cartesian (pc)
x = 0.293 · y = -0.415 · z = 0.861
Equatorial (J2000)
RA 305.22195° · Dec 59.44890°
Galactic ℓ, b
94.119° · 12.742°
Ecliptic λ, β
352.529° · 72.802°
HTM-20 index
-1888435472
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