Sponde articles
Deeper dives into Sponde, sourced from NASA, JPL and the scientific literature.
The Horae: goddesses of seasons and hours
The family of time goddesses behind Sponde’s name.
Read →Sponde’s September 2026 apojove
Why a moon with a 23.5-million-km mean distance swung out to 29.5 million km.
Read →Why do sources give different orbits for Sponde?
Osculating versus mean elements, explained.
Read →