Key parameters at a glance
- A radius of 6.21 Earth radii
- A mass of 19.20 Earth masses
- Surface gravity around 0.50 g
- An orbital period of 4.213 days
- Semi-major axis 0.0622 AU
- Distance from Earth 1,811.95 light-years
- Earth Similarity Index 0.367
- Travel time at Voyager 1 speed 31,953,677 years
- Almost certainly tidally locked to its host star given the close orbit
TIC 365102760 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#260of 574
top 45.1%
This planet
6.21R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | TIC 365102760 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 6.21 | 11.21 |
| Mass (M⊕) | 1.00 | 19.20 | 317.83 |
| Density (g/cm³) | 5.51 | 0.44 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.50 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 19.200 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 365102760
Gaia DR2
Gaia DR2 2185044477033336064
Gaia DR3
Gaia DR3 2185044477033336064
System
TIC 365102760
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.21 Earth days (1.2% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0622 AU.
Transit Fingerprint
Duration
5.520 h
Impact parameter b
0.704
Rp / R★
0.017600
Transit midpoint (BJD)
2,458,684.1460
Extended Orbital Architecture
Planet / star radius ratio
0.017600
Semi-major axis / stellar radius
4.140
Impact parameter (b)
0.704
RV semi-amplitude (K)
7.400 m/s
Transit mid-time (BJD)
2,458,684.1460
Long. of periastron (ω)
0.22°
Angular separation (arcsec)
0.11200
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.367
0 = alien, 1 = Earth-identical
Insufficient insolation data. 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
Grunblatt et al. 2024Instrument
TESS CCD Array
Publication
2024-07
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TIC 365102760
Spectral Class
K-type orange
Effective Temperature
4,900 K — cooler than the Sun (5,778 K)
Estimated Age
6.30 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
3.130 R☉
Stellar Mass
1.170 M☉
Metallicity [Fe/H]
0.09
Extended Stellar Properties
Surface gravity (log g)
3.520 dex
Stellar density
0.058 g/cm³
Systemic radial velocity
-1.59 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
1.772 mas
Total Proper Motion
12.055 mas/yr
PM Right Ascension
10.88 mas/yr
PM Declination
5.19 mas/yr
Galactic Cartesian (pc)
x = 0.341 · y = -0.472 · z = 0.813
Equatorial (J2000)
RA 305.83982° · Dec 54.39432°
Galactic ℓ, b
89.991° · 9.697°
Ecliptic λ, β
342.171° · 69.018°
HTM-20 index
-1738080290
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