Exoplanet · gas giant
TIC 172900988 b
TIC 172900988 b is a gas giant orbiting the star TIC 172900988 Aa. Its year lasts 200 Earth days. It was discovered in 2021 by the Transit method.
| Host star | TIC 172900988 Aa |
|---|---|
| Distance | 818.5 light-years (251.0 pc) |
| Orbital period | 200 days |
| Orbital radius | 0.903 AU |
| Eccentricity | 0.027 |
| Radius | 11.3 R⊕ · 1 R♃ |
| Mass | 942 M⊕ · 2.96 M♃ |
| Density | 3.64 g/cm³ |
| Surface gravity | 7.44 × Earth |
| Equilibrium temperature | 361 K (88 °C) |
| Stellar flux received | 5.75 × Earth |
| Discovery method | Transit |
| Discovery year | 2021 |
| Discovered by | Transiting Exoplanet Survey Satellite (TESS) |
Habitable zone
Inside the inner edge of the habitable zone: it receives 5.75 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 0.82° across: 1.5 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 10.22. Visible from the whole Northern Hemisphere and south to latitude 58° S. North of latitude 58° N it never sets. It stands highest at midnight in January, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1207. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 15 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.