4 ms·
Except that the center of mass of Solar System lies within or very close to the Sun, so in most practical reference frames it looks pretty much spot on heliocen
by qb45 10y ago
Except that the center of mass of Solar System lies within or very close to the Sun, so in most practical reference frames it looks pretty much spot on heliocentric. OTOH the only reasonable frame producing geocentric view is the Earth.
- pbhjpbhj 10y agoYou can do the calculations from a different point, CoM makes things easier. It's only mathematically simple, not really objectively special except within a chosen context.