The ISFDB is moving servers the week of 9/4.

Editing will be disabled on 9/6 until the database is migrated, and you may see either the old server or the new server while the domain name change propagates across the Internet.

You are currently on the NEW SERVER.

Title: The Oort Perimeter

You are not logged in. If you create a free account and sign in, you will be able to customize what is displayed.

Search the database

Name Fiction Titles All Titles Year of Title Month of Title Month of Publication Series Publication Series Magazine Publisher ISBN Tag Award

Advanced Search

• Log In
• Help Navigating

• Home Page
• ISFDB Wiki
• ISFDB FAQ
• SF Calendar
• Author Directory
• Award Directory
• Publisher Directory
• Magazine Directory
• Statistics/Top Lists
• Recent Activity
• Cleanup Reports

• Edit Title Data
• Compare Publications
• Delete This Title
• Make This Title a Variant
• Add Publication to This Title
• Add a Variant to This Title
• Add an Award to This Title
• Unmerge Titles
• Check for Duplicate Titles

• Add New Anthology
• Add New Chapbook
• Add New Collection
• Add New Fanzine
• Add New Magazine
• Add New Nonfiction
• Add New Novel
• Add New Omnibus
• Add Untitled Award

• Disclaimer
• Privacy Policy
• Banner Art Credits

This work is licensed under a Creative Commons Attribution 4.0 International License.