U Geminorum
Top View
- Gemini (Constellation) - Wikipedia, the Free Encyclopedia
- U Geminorum Stars
- The Observer's Handbook for 1938
- JAAVSO 2011 the Journal of the American Association of Variable Star Observers VX Hya: Sudden Change in a Pulsating Star
- Stars with Special Characteristics
- PDF Hosted at the Radboud Repository of the Radboud University Nijmegen
- Variable Star Section Circular
- Annual Report 2014-2015
- Atoms to Astronomy
- Grant Award Files, 1998-2007
- The Observer's Handbook for 1917
- Accretion Disk (Chapter 4)
- Planetary Data
- Massachusetts Institute of Technology Department of Earth, Atmospheric, and Planetary Sciences 12.409 Observing Stars and Planets, Spring 2002
- ALFRED HARRISON JOY September 23, 1882-April 18, 1973
- The Observer's Handbook for 1941
- CV Gehrels 3-15
- Understanding Variable Stars