TOI-1670 b
TOI-1670 b is a super-Earth orbiting the F7 V star TOI-1670 in the constellation Draco. It lies about 548 light-years from Earth and was discovered in 2022 using the transit method.
How Big Is TOI-1670 b?
TOI-1670 b has a radius of 2.06 times that of Earth. Its mass is 41.3 times that of Earth, giving it a density of 8.60 g/cm³ — comparable to rocky planets like Earth (5.51 g/cm³).
Is TOI-1670 b in the Habitable Zone?
TOI-1670 b orbits inside the inner edge of the habitable zone of TOI-1670. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-1670: 1.100–2.567 AU (conservative: 1.393–2.434 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
Temperature on TOI-1670 b
The equilibrium temperature of TOI-1670 b is about 1,062 K (789 °C) — hot enough to melt many metals. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C.
Orbit and Year Length
A year on TOI-1670 b — one full orbit around TOI-1670 — lasts 11.0 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.103 AU — closer to its star than Mercury is to the Sun. Its orbit is highly elliptical (eccentricity 0.59), swinging dramatically closer to and farther from its star.
How Was TOI-1670 b Discovered?
TOI-1670 b was discovered in 2022 using the transit method, with observations from Transiting Exoplanet Survey Satellite (TESS).
The transit method watches a star for the tiny, regular dip in brightness that occurs when a planet crosses in front of it. The depth and timing of these dips reveal the planet's size and orbital period.
How Far Away Is TOI-1670 b?
TOI-1670 b is 548.2 light-years (168.1 parsecs) from Earth. Light arriving here tonight left the planet around the year 1478. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 9,648,320 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. TOI-1670 b scores 0.26, ranking #2,971 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: TOI-1670
TOI-1670
- Spectral type
- F7 V
- Surface temperature
- 6,170 K (Sun: 5,772 K)
- Mass
- 1.21 M☉
- Radius
- 1.32 R☉
- Age
- 2.5 billion years (Sun: 4.6)
The TOI-1670 Planetary System
TOI-1670 b is one of 2 known planets in the TOI-1670 system. Its siblings:
- TOI-1670 c (Cold Gas Giant)
TOI-1670 b — Complete Data
| Radius | 2.060 Earth radii (0.184 Jupiter radii) |
|---|---|
| Mass | 41.32 Earth masses (0.130 Jupiter masses) |
| Density | 8.60 g/cm³ (Earth: 5.51) |
| Orbital period | 10.98 days |
| Orbital distance | 0.103 AU |
| Eccentricity | 0.590 |
| Equilibrium temperature | 1,062 K (789 °C) |
| Earth Similarity Index | 0.26 |
| Distance from Earth | 548.2 light-years (168.1 parsecs) |
| Constellation | Draco |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2022 |
Data: NASA Exoplanet Archive, last updated 2022-03-16. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-1670 b
Is TOI-1670 b habitable?
No — TOI-1670 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-1670 b?
TOI-1670 b is about 548 light-years from Earth in the constellation Draco. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 9,648,320 years to get there.
How big is TOI-1670 b compared to Earth?
TOI-1670 b has 2.06 times the radius of Earth and about 41.3 times its mass.
How long is a year on TOI-1670 b?
One orbit around TOI-1670 takes 11.0 Earth days — short enough that 33 of its years would fit into one Earth year.
Explore TOI-1670 b in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
