Rob wrote In case anyone cares, SkyMap and IRIDFLAR have always used WGS-84. So if the orbital elements used with SkyMap or IRIDFLAR are WGS-72 (or some other datum), then that will introduce a small systematic error in the predictions. Thats nice to know Based on the formula that TS Kelso developed for sat tracking which uses the WGS72 datum as part of its calculations. Then I would expect that the orbits of the sats are using the WGS72 datum. Since WGS84 is becoming the standard datum, wonder when it will be used in the calculations if it not being used right now. I am waiting to see what datum JPL uses in its calculations for observations of objects made from earth. Kevin _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Fri Aug 17 2001 - 11:37:55 PDT