TOI-1450 A b
TOI-1450 A b is a terrestrial planet orbiting the M3.0 V star TOI-1450 A in the constellation Draco. It lies about 73 light-years from Earth and was discovered in 2024 using the transit method.
How Big Is TOI-1450 A b?
TOI-1450 A b has a radius of 1.13 times that of Earth. Its mass is 1.3 times that of Earth.
Is TOI-1450 A b in the Habitable Zone?
The position of TOI-1450 A b relative to the habitable zone of TOI-1450 A cannot be precisely determined from the available orbital data.
Habitable zone of TOI-1450 A: 0.140–0.364 AU (conservative: 0.177–0.345 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on TOI-1450 A b
The equilibrium temperature of TOI-1450 A b is about 722 K (449 °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-1450 A b — one full orbit around TOI-1450 A — lasts 2.04 Earth days, shorter than Mercury's 88-day year.
How Was TOI-1450 A b Discovered?
TOI-1450 A 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 TOI-1450 A b?
TOI-1450 A b is 73.2 light-years (22.4 parsecs) from Earth. Light arriving here tonight left the planet around the year 1953. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 1,288,320 years to make the journey.
The Host Star: TOI-1450 A
TOI-1450 A b belongs to a system of 2 stars; it orbits TOI-1450 A.
TOI-1450 A
- Spectral type
- M3.0 V
- Surface temperature
- 3,437 K (Sun: 5,772 K)
- Mass
- 0.48 M☉
- Radius
- 0.48 R☉
The TOI-1450 A Planetary System
TOI-1450 A b is one of 2 known planets in the TOI-1450 A system. Its siblings:
- TOI-1450 A c (Terrestrial)
TOI-1450 A b — Complete Data
| Radius | 1.130 Earth radii (0.101 Jupiter radii) |
|---|---|
| Mass | 1.26 Earth masses (0.004 Jupiter masses) |
| Orbital period | 2.04 days |
| Equilibrium temperature | 722 K (449 °C) |
| Distance from Earth | 73.2 light-years (22.4 parsecs) |
| Constellation | Draco |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2024 |
Data: NASA Exoplanet Archive, last updated 2024-06-10. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-1450 A b
Is TOI-1450 A b habitable?
TOI-1450 A b is not known to orbit within the habitable zone of TOI-1450 A, and as a terrestrial planet it is an unlikely candidate for life as we know it.
How far away is TOI-1450 A b?
TOI-1450 A b is about 73 light-years from Earth in the constellation Draco. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 1,288,320 years to get there.
How big is TOI-1450 A b compared to Earth?
TOI-1450 A b has 1.13 times the radius of Earth and about 1.3 times its mass.
How long is a year on TOI-1450 A b?
One orbit around TOI-1450 A takes 2.0 Earth days — short enough that 179 of its years would fit into one Earth year.
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