Guide to Minor Body Astrometry has been updated

The Guide to Minor Body Astrometry was updated December 11, 2009 for further clarification:

• on the use of "K" for astrometry obtained from stacked images
• on the number of observations to make per night
• on the time span for a night's observations of an object new or followup
• submission of single positions

http://www.cfa.harvard.edu/iau/info/Astrometry.html



Special thanks to Peter Birtwhistle, J95 for alerting us all to this change.



Alphabetic notes for observations can be found here:


http://www.cfa.harvard.edu/iau/info/ObsNote.html


Format For Optical Astrometric Observations Of Comets, Minor Planets and Natural Satellites
http://www.cfa.harvard.edu//iau/info/OpticalObs.html



Examples of valid comet and minor-planet observations:
http://www.cfa.harvard.edu//iau/info/ObsExamples.html