GO 13334

Sun May 03 03:03:42 EDT 2026

Principal Investigator: Adam Riess
PI Institution: The Johns Hopkins University
Investigators (XML)

Title: The Longest Period Cepheids, a bridge to the Hubble Constant
Cycle: 21
External Allocation: 14 orbits
Proprietary Period: 6 months

Program Status: Program has been Completed

Program Coordinator: William Januszewski Contact
Contact Scientist: Peter McCullough Contact

Program Contents

• APT File
• Formatted Listing
• Public PDF
• HST Archive Information

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Related Programs

• 13686: The Longest Period Cepheids, a bridge to the Hubble Constant