Farsta Hospital Garden, 1967

A balanced sculpture, called 'Kepler', was placed outside Farsta Hospital in 1967.
This was located at Ekebergabacken 4 in Farsta, a lakeside area on the outskirts of Hökarängsbadet and Drevviken. The buildings were demolished to make way for new housing in what is today called Drevvikshöjden.

"Sivert drew inspiration from Johannes Kepler's astronomical research on elliptical planetary orbits and his fascination with the five Platonic solids. The work captures illusory movement patterns from a number of pen-tip-like observation points. Sivert then brought these together to form an illusory body, built on the spaces in between.

Kepler's elliptical orbits describe how planets move in oval paths (ellipses) around the sun. These orbits are formulated in Kepler's three laws:
First Law: Planetary orbits are ellipses with the sun at one focus. This means that the distance between the planet and the sun varies during an orbit.
Second Law: A line between the sun and a planet sweeps over equal areas in equal times. This means that a planet moves faster when it is closest to the sun (perihelion) and slower when it is farthest away (aphelion).
Third Law: The ratio of a planet's orbital period (T) squared to its mean distance from the sun (r) cubed is constant for all planets in the same solar system.
How Sivert managed to transfer these relationships to his sculpture was something I didn't get a chance to ask him about. The only thing I know is that the elliptical orbits were discovered by Johannes Kepler in the early 17th century based on Tycho Brahe's very precise astronomical observations of the planet Mars. This model broke with the previous notion that celestial bodies moved in perfect circles."
/ JÖ

The sculpture's current whereabouts are unknown; it was reported to have been handed over to the City of Stockholm's Culture Administration in May 1995 with registration number 443.