Orbit

From Author Wars - https://authorwars.com/publications/orbit-233197.html

Overview:

Title: Orbit
Author: Thomas H. Block
Year: 1982
Publisher: Coward, McCann & Geoghegan / SFBC
Price: $4.98
Pages: 271
Binding: Hardcover
Type: Novel
Title Reference: Orbit
Notes:
The month of publication and price are for its being chosen as a selection for the SFBC. Gutter code "M16" indicates a printing in April, 1982 after which it was probably available from other Doubleday book clubs.