Key parameters at a glance
- A radius of 1.60 Earth radii
- A mass of 6.40 Earth masses
- Surface gravity around 2.50 g
- An orbital period of 4.842 days
- Semi-major axis 0.0546 AU
- Equilibrium temperature 1,000 K (727 °C)
- Distance from Earth 481.00 light-years
- Earth Similarity Index 0.280
- Travel time at Voyager 1 speed 8,482,467 years
1 sibling around TOI-1347
TOI-1347 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| TOI-1347 b | Super-Earth | 1.80 | 11.10 | 0.847 | 1,400 | 2024 |
| TOI-1347 c this | Super-Earth | 1.60 | 6.40 | 4.842 | 1,000 | 2024 |
TOI-1347 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#570of 1176
top 48.4%
This planet
1.60R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | TOI-1347 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.60 | 11.21 |
| Mass (M⊕) | 1.00 | 6.40 | 317.83 |
| Density (g/cm³) | 5.51 | 4.10 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.50 | 2.53 |
| Insolation (S⊕) | 1.00 | 183.66 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 6.400 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 229747848
Gaia DR2
Gaia DR2 2265406171296388992
Gaia DR3
Gaia DR3 2265406171296997888
System
TOI-1347
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.84 Earth days (1.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0546 AU.
Transit Fingerprint
Depth
0.032 %
Duration
2.243 h
Impact parameter b
0.730
Rp / R★
0.017900
Transit midpoint (BJD)
2,458,678.5059
Photometric dip
Transit produces a flux drop of 319 ppm lasting ≈ 2.24 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017900
Semi-major axis / stellar radius
14.180
Impact parameter (b)
0.730
RV semi-amplitude (K)
2.590 m/s
Transit mid-time (BJD)
2,458,678.5059
Long. of periastron (ω)
90.00°
Angular separation (arcsec)
0.37000
Eq. Temperature
1,000K
(727 °C)
Insolation (S⊕)
183.66
Earth = 1.00
Earth Similarity (ESI)
0.280
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Discovery Paper
Primary reference
Rubenzahl et al. 2024Instrument
TESS CCD Array
Publication
2024-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-1347
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,464 K — cooler than the Sun (5,778 K)
Estimated Age
1.40 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.830 R☉
Stellar Mass
0.913 M☉
Metallicity [Fe/H]
0.04
Extended Stellar Properties
Surface gravity (log g)
4.640 dex
Stellar density
2.300 g/cm³
Rotational v·sin i
2.90 km/s
Rotation period
16.10 days
Activity index (log R'HK)
-4.660
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
6.752 mas
Total Proper Motion
26.975 mas/yr
PM Right Ascension
-6.33 mas/yr
PM Declination
26.22 mas/yr
Galactic Cartesian (pc)
x = 0.060 · y = -0.332 · z = 0.941
Equatorial (J2000)
RA 280.32668° · Dec 70.29005°
Galactic ℓ, b
100.863° · 26.266°
Ecliptic λ, β
49.202° · 84.691°
HTM-20 index
-1829291850
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