Exoplanet · super-Earth
LTT 1445 A b
LTT 1445 A b is a super-Earth orbiting the star LTT 1445 A. Its year lasts 5.36 Earth days. It was discovered in 2019 by the Transit method.
| Host star | LTT 1445 A |
|---|---|
| Distance | 22.4 light-years (6.87 pc) |
| Orbital period | 5.36 days |
| Orbital radius | 0.0381 AU |
| Eccentricity | 0.180 |
| Radius | 1.34 R⊕ · 0.12 R♃ |
| Mass | 2.73 M⊕ · 0.00859 M♃ |
| Density | 6.2 g/cm³ |
| Surface gravity | 1.52 × Earth |
| Equilibrium temperature | 431 K (158 °C) |
| Stellar flux received | 5.7 × Earth |
| Discovery method | Transit |
| Discovery year | 2019 |
| Discovered by | Transiting Exoplanet Survey Satellite (TESS) |
Habitable zone
Inside the inner edge of the habitable zone: it receives 5.7 times the light the Earth does, too hot to keep liquid water on its surface.
Its star in the sky
In the planet's sky its star is a disc 3.8° across: 7.1 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 10.40. Visible from the whole Southern Hemisphere and north to latitude 73° N. South of latitude 73° S it never sets. It stands highest at midnight in November, the best time to observe it.
Light's journey
The light you see tonight set out around the year 2004. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 397 thousand years.
Planets in the same system
- LTT 1445 A c 3.12-day orbit · 1.15 R⊕
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.