Key parameters at a glance
- A radius of 10.78 Earth radii
- A mass of 624.00 Earth masses
- Surface gravity around 5.37 g
- An orbital period of 2.003 days
- Semi-major axis 0.0272 AU
- Equilibrium temperature 939 K (666 °C)
- Distance from Earth 1,273.36 light-years
- Earth Similarity Index 0.124
- Travel time at Voyager 1 speed 22,455,737 years
- Almost certainly tidally locked to its host star given the close orbit
TOI-5616 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1691of 1771
top 95.4%
This planet
10.78R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-5616 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 10.78 | 11.21 |
| Mass (M⊕) | 1.00 | 624.00 | 317.83 |
| Density (g/cm³) | 5.51 | — | 1.33 |
| Surface Gravity (g) | 1.00 | 5.37 | 2.53 |
| Insolation (S⊕) | 1.00 | 137.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 624.000 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 154220877
Gaia DR2
Gaia DR2 1545570133528453888
Gaia DR3
Gaia DR3 1545570133528453888
System
TOI-5616
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.00 Earth days (0.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0272 AU.
Transit Fingerprint
Depth
2.508 %
Duration
1.660 h
Impact parameter b
0.340
Rp / R★
0.153200
Transit midpoint (BJD)
2,458,901.4889
Photometric dip
Transit produces a flux drop of 25,077 ppm lasting ≈ 1.66 h.
Extended Orbital Architecture
Planet / star radius ratio
0.153200
Semi-major axis / stellar radius
10.210
Impact parameter (b)
0.340
RV semi-amplitude (K)
384.000 m/s
Transit mid-time (BJD)
2,458,901.4889
Long. of periastron (ω)
90.00°
Angular separation (arcsec)
0.06970
Eq. Temperature
939K
(666 °C)
Insolation (S⊕)
137.00
Earth = 1.00
Earth Similarity (ESI)
0.124
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Kanodia et al. 2024Instrument
TESS CCD Array
Publication
2024-08
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-5616
Spectral Class
K-type orange
Effective Temperature
3,996 K — cooler than the Sun (5,778 K)
Estimated Age
7.20 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.646 R☉
Stellar Mass
0.666 M☉
Metallicity [Fe/H]
0.14
Extended Stellar Properties
Surface gravity (log g)
4.670 dex
Stellar density
3.490 g/cm³
Rotational v·sin i
3.00 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
2.533 mas
Total Proper Motion
51.720 mas/yr
PM Right Ascension
-43.12 mas/yr
PM Declination
28.56 mas/yr
Galactic Cartesian (pc)
x = -0.658 · y = -0.056 · z = 0.751
Equatorial (J2000)
RA 184.90164° · Dec 48.68329°
Galactic ℓ, b
136.798° · 67.579°
Ecliptic λ, β
159.415° · 45.360°
HTM-20 index
1424247374
Similar Worlds
WASP-23 b
Gas Giant · K-type orange
Radius 10.78 R⊕ · 676.7 ly
WASP-105 b
Gas Giant · K-type orange
Radius 10.76 R⊕ · 552.1 ly
WASP-154 b
Gas Giant · K-type orange
Radius 10.76 R⊕ · 702.9 ly
HAT-P-12 b
Gas Giant · K-type orange
Radius 10.75 R⊕ · 465.6 ly
IRAS 04125+2902 b
Gas Giant · K-type orange
Radius 10.74 R⊕ · 519.4 ly
WASP-84 b
Gas Giant · K-type orange
Radius 10.72 R⊕ · 328.1 ly