Star · F9
TIC 172900988 Aa
TIC 172900988 Aa is a giant star of spectral type F9 in the constellation Cancer, 803.2 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Cancer |
|---|---|
| Distance | 803.2 light-years (246.3 pc) |
| Apparent magnitude | magnitude 10.22 |
| Absolute magnitude | magnitude 3.26 |
| Spectral type | F9 |
| Surface temperature | 6,050 K |
| Luminosity | 4.69 L☉ |
| Radius | 1.38 R☉ |
| Mass | 1.24 M☉ |
| Age | 3.1 billion years |
| Metallicity [Fe/H] | 0.34 |
| Right ascension (J2000) | 8h 34m 38.8s |
| Declination (J2000) | +31° 33′ 15″ |
| Space velocity (relative to the Sun) | 27.8 km/s |
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.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1223. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 14 million years.
The Sun seen from there
From a planet around TIC 172900988 Aa, the Sun would look like a star of magnitude 11.79, in the direction where our sky has the constellation Microscopium. It would be invisible to the naked eye.
Planets
- TIC 172900988 b 200-day orbit · 11.3 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.