Phase and Libration Coverage
| This plot shows the libration coverage of the processed ROLO dataset, with phase indicated by color. Although these data represent 4.6 years of the full ROLO archive, not quite 1/4 of the 18.6 year libration repeat cycle, the libration space is substantially filled. However, if phase angle is restricted to a narrow range then libration coverage is sparse. |
For an animation of a lunation cycle showing the optical librations through the phases, check out the Astronomy Picture of the day for 08 Nov. 1999[http://http://antwrp.gsfc.nasa.gov/apod/ap991108.html].
U.S. Department of the Interior | U.S. Geological Survey | U.S.G.S. Astrogeology
Top | Home | Search | Disclaimers & Privacy | Special Printing Instructions
Send Science Questions to: tstone@usgs.gov
Send Website Questions to: webteam@astrogeology.usgs.gov
http://
www.moon-cal.org/database/phase_libration.php
Last Modified:
Thu, 04 May 2006 16:02:43 -0600
- - -
The USGS is committed to providing valid and Section 508 compliant content.
If you feel that this page does not meet any of the standards, please email at kwinfree@usgs.gov.