The bright standard magnitude I gave (+1.0) is probably caused by the favourable approach phase angle (~166 degrees) Asian, Australian, African and European observers can take advantage of that until about 19:00 UT Tuesday (US on Mo-Tu night, local time) Though, as Rainer notes, you will usually have vectors available for all fly-by spacecraft, but if not, you can convert geocentric RA-Dec-range or Lat-Long-Height (with some effort any look-angle ephemeris) to vectors. With some additional effort, you can also produce the velocity vectors. /Björn ----- Original Message ----- >Horizons gives you vectors if you request them. select >Ephemeris Type [change] : VECTORS >and you get what you need. > >Rainer ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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