TJTucson1's Northern Planisphere Geocoin
Trackable Options |
Found this item? Log in. |
Printable information sheet to attach to TJTucson1's Northern Planisphere Geocoin
Print Info Sheet |
|
-
Owner:
-
TJTucson1
Message this owner
-
Released:
-
Monday, March 21, 2011
-
Origin:
-
Arizona, United States
-
Recently Spotted:
-
In the hands of the owner.
The owner hasn't set their collectible preference.
Use TB2EWW0 to reference this item.
First time logging a Trackable? Click here.
A planisphere is a star chart analog computing instrument in the form of two adjustable disks that rotate on a common pivot. It can be adjusted to display the visible stars for any time and date. It is an instrument to assist in learning how to recognize stars and constellations. The astrolabe, an instrument that has its origins in the Hellenistic civilization, is a predecessor of the modern planisphere.
This geocoin can only be discovered in TJTucson1's coin collection.
No additional details available.
Tracking History (4599.6mi) View Map