TIC 46432937 b
TIC 46432937 b is a hot Jupiter orbiting TIC 46432937 in the constellation Lepus. It lies about 295 light-years from Earth and was discovered in 2024 using the transit method.
How Big Is TIC 46432937 b?
TIC 46432937 b has a radius of 13.32 times that of Earth, or 1.19 times the radius of Jupiter. Its mass is 1,017 times that of Earth, giving it a density of 2.37 g/cm³ — between that of rocky and gaseous planets.
Is TIC 46432937 b in the Habitable Zone?
TIC 46432937 b orbits inside the inner edge of the habitable zone of TIC 46432937. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TIC 46432937: 0.166–0.429 AU (conservative: 0.210–0.407 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on TIC 46432937 b
The equilibrium temperature of TIC 46432937 b is about 872 K (599 °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 TIC 46432937 b — one full orbit around TIC 46432937 — lasts just 34.6 hours, shorter than Mercury's 88-day year. It orbits at an average distance of 0.021 AU — closer to its star than Mercury is to the Sun. Its orbit is nearly circular (eccentricity 0.009).
How Was TIC 46432937 b Discovered?
TIC 46432937 b was discovered in 2024 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 TIC 46432937 b?
TIC 46432937 b is 295.3 light-years (90.5 parsecs) from Earth. Light arriving here tonight left the planet around the year 1731. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 5,197,280 years to make the journey.
The Host Star: TIC 46432937
TIC 46432937
- Surface temperature
- 3,572 K (Sun: 5,772 K)
- Mass
- 0.56 M☉
- Radius
- 0.53 R☉
- Luminosity
- 0.0412 L☉
- Age
- 7.4 billion years (Sun: 4.6)
Planetary System
TIC 46432937 b is the only planet known to orbit TIC 46432937 so far.
TIC 46432937 b — Complete Data
| Radius | 13.316 Earth radii (1.188 Jupiter radii) |
|---|---|
| Mass | 1,017.05 Earth masses (3.200 Jupiter masses) |
| Density | 2.37 g/cm³ (Earth: 5.51) |
| Orbital period | 1.44 days |
| Orbital distance | 0.021 AU |
| Eccentricity | 0.009 |
| Equilibrium temperature | 872 K (599 °C) |
| Distance from Earth | 295.3 light-years (90.5 parsecs) |
| Constellation | Lepus |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2024 |
Data: NASA Exoplanet Archive, last updated 2024-07-22. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TIC 46432937 b
Is TIC 46432937 b habitable?
No — TIC 46432937 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TIC 46432937 b?
TIC 46432937 b is about 295 light-years from Earth in the constellation Lepus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 5,197,280 years to get there.
How big is TIC 46432937 b compared to Earth?
TIC 46432937 b has 13.32 times the radius of Earth and about 1,017 times its mass.
How long is a year on TIC 46432937 b?
One orbit around TIC 46432937 takes 1.4 Earth days — short enough that 254 of its years would fit into one Earth year.
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