Key parameters at a glance
- A radius of 18.98 Earth radii
- A mass of 138.26 Earth masses
- Surface gravity around 0.38 g
- An orbital period of 4.662 days
- Semi-major axis 0.0678 AU
- Equilibrium temperature 1,666 K (1393 °C)
- Distance from Earth 1,175.49 light-years
- Earth Similarity Index 0.046
- Travel time at Voyager 1 speed 20,729,806 years
TOI-615 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#45of 1771
top 2.5%
This planet
18.98R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-615 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 18.98 | 11.21 |
| Mass (M⊕) | 1.00 | 138.26 | 317.83 |
| Density (g/cm³) | 5.51 | 0.08 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.38 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,286.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 138.255 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 190496853
Gaia DR2
Gaia DR2 5524780333100885888
Gaia DR3
Gaia DR3 5524780333100885888
System
TOI-615
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.66 Earth days (1.3% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0678 AU.
Transit Fingerprint
Depth
1.197 %
Duration
4.241 h
Impact parameter b
0.476
Rp / R★
0.100230
Transit midpoint (BJD)
2,459,259.4938
Photometric dip
Transit produces a flux drop of 11,972 ppm lasting ≈ 4.24 h.
Extended Orbital Architecture
Planet / star radius ratio
0.100230
Semi-major axis / stellar radius
8.458
Impact parameter (b)
0.476
RV semi-amplitude (K)
42.400 m/s
Transit mid-time (BJD)
2,459,259.4938
Angular separation (arcsec)
0.18800
Eq. Temperature
1,666K
(1393 °C)
Insolation (S⊕)
1,286.00
Earth = 1.00
Earth Similarity (ESI)
0.046
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
Psaridi et al. 2023Instrument
TESS CCD Array
Publication
2023-07
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-615
Spectral Class
F-type yellow-white
Effective Temperature
6,850 K — hotter than the Sun (5,778 K)
Estimated Age
1.70 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.732 R☉
Stellar Mass
1.449 M☉
Metallicity [Fe/H]
-0.10
Extended Stellar Properties
Surface gravity (log g)
4.200 dex
Stellar density
0.276 g/cm³
Rotational v·sin i
16.30 km/s
Rotation period
5.38 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
2.746 mas
Total Proper Motion
30.861 mas/yr
PM Right Ascension
-17.35 mas/yr
PM Declination
25.52 mas/yr
Galactic Cartesian (pc)
x = -0.522 · y = 0.552 · z = -0.650
Equatorial (J2000)
RA 133.40869° · Dec -40.54370°
Galactic ℓ, b
262.000° · 2.714°
Ecliptic λ, β
154.599° · -54.685°
HTM-20 index
-1897864843
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