TOI-2046 b
TOI-2046 b is a hot Jupiter orbiting the F8 V star TOI-2046 in the constellation Cassiopeia. It lies about 945 light-years from Earth and was discovered in 2022 using the transit method.
How Big Is TOI-2046 b?
TOI-2046 b has a radius of 16.14 times that of Earth, or 1.44 times the radius of Jupiter. Its mass is 731 times that of Earth.
Is TOI-2046 b in the Habitable Zone?
The position of TOI-2046 b relative to the habitable zone of TOI-2046 cannot be precisely determined from the available orbital data.
Habitable zone of TOI-2046: 1.032–2.407 AU (conservative: 1.308–2.282 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 ›
Orbit and Year Length
A year on TOI-2046 b — one full orbit around TOI-2046 — lasts just 35.9 hours, shorter than Mercury's 88-day year.
How Was TOI-2046 b Discovered?
TOI-2046 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-2046 b?
TOI-2046 b is 944.8 light-years (289.7 parsecs) from Earth. Light arriving here tonight left the planet around the year 1082. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 16,628,480 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-2046 b scores 0.06, ranking #5,204 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: TOI-2046
TOI-2046
- Spectral type
- F8 V
- Surface temperature
- 6,250 K (Sun: 5,772 K)
- Mass
- 1.13 M☉
- Radius
- 1.21 R☉
- Age
- 0.5 billion years (Sun: 4.6)
Planetary System
TOI-2046 b is the only planet known to orbit TOI-2046 so far.
TOI-2046 b — Complete Data
| Radius | 16.141 Earth radii (1.440 Jupiter radii) |
|---|---|
| Mass | 731.01 Earth masses (2.300 Jupiter masses) |
| Orbital period | 1.50 days |
| Earth Similarity Index | 0.06 |
| Distance from Earth | 944.8 light-years (289.7 parsecs) |
| Constellation | Cassiopeia |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2022 |
Data: NASA Exoplanet Archive, last updated 2022-05-23. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-2046 b
Is TOI-2046 b habitable?
TOI-2046 b is not known to orbit within the habitable zone of TOI-2046, and as a hot Jupiter it is an unlikely candidate for life as we know it.
How far away is TOI-2046 b?
TOI-2046 b is about 945 light-years from Earth in the constellation Cassiopeia. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 16,628,480 years to get there.
How big is TOI-2046 b compared to Earth?
TOI-2046 b has 16.14 times the radius of Earth and about 731 times its mass.
How long is a year on TOI-2046 b?
One orbit around TOI-2046 takes 1.5 Earth days — short enough that 244 of its years would fit into one Earth year.
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