Key parameters at a glance
- A radius of 2.06 Earth radii
- A mass of 41.32 Earth masses
- Surface gravity around 9.74 g
- An orbital period of 10.985 days
- Semi-major axis 0.1030 AU
- Equilibrium temperature 1,062 K (789 °C)
- Distance from Earth 548.16 light-years
- Earth Similarity Index 0.225
- Travel time at Voyager 1 speed 9,666,812 years
1 sibling around TOI-1670
TOI-1670 b 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-1670 b this | Sub-Neptune | 2.06 | 41.32 | 10.985 | 1,062 | 2022 |
| TOI-1670 c | Gas Giant | 11.06 | 200.23 | 40.750 | 684 | 2022 |
TOI-1670 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1875of 1978
top 94.7%
This planet
2.06R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | TOI-1670 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.06 | 11.21 |
| Mass (M⊕) | 1.00 | 41.32 | 317.83 |
| Density (g/cm³) | 5.51 | 8.60 | 1.33 |
| Surface Gravity (g) | 1.00 | 9.74 | 2.53 |
| Insolation (S⊕) | 1.00 | 196.69 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 41.318 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 441739020
Gaia DR2
Gaia DR2 1651911084230149248
Gaia DR3
Gaia DR3 1651911084230149248
System
TOI-1670
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 10.98 Earth days (3.0% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.1030 AU.
Transit Fingerprint
Depth
0.032 %
Duration
2.800 h
Impact parameter b
0.610
Rp / R★
0.014000
Transit midpoint (BJD)
2,458,721.9423
Photometric dip
Transit produces a flux drop of 315 ppm lasting ≈ 2.80 h.
Extended Orbital Architecture
Planet / star radius ratio
0.014000
Semi-major axis / stellar radius
16.880
Impact parameter (b)
0.610
Transit mid-time (BJD)
2,458,721.9423
Long. of periastron (ω)
163.60°
Angular separation (arcsec)
0.61300
Eq. Temperature
1,062K
(789 °C)
Insolation (S⊕)
196.69
Earth = 1.00
Earth Similarity (ESI)
0.225
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Discovery Paper
Primary reference
Tran et al. 2022Instrument
TESS CCD Array
Publication
2022-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2022 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-1670
Spectral Class
F-type yellow-white
Effective Temperature
6,170 K — hotter than the Sun (5,778 K)
Estimated Age
2.53 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.316 R☉
Stellar Mass
1.210 M☉
Metallicity [Fe/H]
0.09
Extended Stellar Properties
Surface gravity (log g)
4.290 dex
Stellar density
0.752 g/cm³
Rotational v·sin i
9.20 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
5.921 mas
Total Proper Motion
7.981 mas/yr
PM Right Ascension
-6.09 mas/yr
PM Declination
5.15 mas/yr
Galactic Cartesian (pc)
x = -0.058 · y = -0.301 · z = 0.952
Equatorial (J2000)
RA 259.01725° · Dec 72.16118°
Galactic ℓ, b
103.420° · 32.975°
Ecliptic λ, β
119.595° · 83.214°
HTM-20 index
-1342493751
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