00 · star
Sol
The system's only star. A 1.4-million-kilometre photosphere of boiling plasma; every orbit in the catalog is a closed fall toward this mass.
- Distance from Sol
- 0 km
- Surface gravity
- 274 m/s²
- Day length
- 25.4 earth d
- Mean temperature
- 5500 °C
Atmosphere
The photosphere is the visible layer of the Sun's atmosphere. Above it lie the chromosphere, transition region and corona. There is no solid surface.
Notes
Differential rotation: ~25 days at the equator, ~35 at the poles. The magnetic cycle flips polarity every 11 years. Everything with a year in this system is in free fall around Sol.
Illustrative scale · orbital distances compressed. Not an ephemeris.