ModelPlan 181

Michael Whiting's

Large Object Orrery

This Orrery demonstrates all the known objects in our Solar System larger than 250km diameter.

It consists of seven units, each of which can be built as a standalone model, and all units can be interconnected with periods of motion related within an accuracy of 1%.

The Units

1. The Sun rotating; the inner Planets (Mercury, Venus, Earth, Mars) rotating and also revolving around the Sun; the Moon revolving around the Earth.

2. The Asteroid Belt: This includes the Dwarf Planet Ceres and the twelve largest Asteroids, all rotating at the correct relative rate.

3. Jupiter rotating and its five largest moons revolving around it.

4. Saturn rotating, with a representation of its rings, and its eight largest moons revolving around it.

5. Uranus rotating and its five largest moons revolving around it.

6. Neptune rotating and its three largest moons revolving around it. This unit also has a clock attached showing the passage of ‘Orrery Time’.

7. Nineteen Trans-Neptunian Objects (TNO’s). These include the Dwarf Planets Pluto (with its Moon Charon), Eris and Makemake. The TNO 2003 EL61 (Santa) has a large moon (Rudolph) rotating around it.

In all, the model shows 63 bodies with 68 movements.
 

Ref:  MP181   40 Pages   Price:  £14.90