TABLE OF CONTENTS 
                
Title Page                                                     
Preface(descriptions of tables and figures)       

List of Tables                                                                        Pages

	Table 1. Radial Distance, Heliographic Latitude, and Ecliptic Longitude 	    3

        Data are from Pioneer 10, Pioneer 11, Voyager 1, Voyager 2, and Ulysses,
        for the first day of each year, from launch through 1990. For Ulysses.
        additional dates signify when the probe is at the farthest southern and
        northern heliographic latitudes.

	Table 2.	Radial Distance and Ecliptic Plane Earth-Sun-Probe Angle  	    4-7
         
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        Data are for ICE, Suisei, Sakigake, Galileo, Ulysses, and Giotto, from 1989
        through 1999 for the first four probes, from 1990 through 1999 for Ulysses,
        and during 1992 only for Giotto. The DOYs are the day-of-year of the first
        day of each month. The PVO orbit is regular enough that its E-S-P angle is
        provided at the end, algebraically only. Sakigake data between October 94
        (third maneuver) and October 95 (fourth maneuver) may not be very
        accurate.


List of Figures 

   Figure 1.  Radial Distances of Pioneer 10, Pioneer 11, Voyager 1, and Voyager 2 	     11

   Time coverage is launch through 1999. The data points are on the first day of
   each year.


   Figure 2.  Hellographic Latitudes on Pioneer 10, Pioneer 11, Voyager 1, and Voyager 2     12

   The time coverage is launch through 1999. The data points are on the first
   day of each year. See the 1986 NSSDC report 86-03, Trajectories of
   Pioneers 6-11, Helios A and B, and Voyagers 1 and 2, for higher resolution
   data for the early years.


   Figure 3.  Ecllptic Longitudes of Pioneer 10, Pioneer 11, Voyager 1, and Voyager 2        13

   The time coverage is launch through 1999. The data points are on the first
   day of each year. Also plotted is the ecliptic longitude of Earth for any day
   of a year. The Earth-Sun-probe angle can be readily inferred. See the 1986
   NSSDC report 86-03, Trajectories of Pioneers 6-11, Helios A and B, and
   Voyagers 1 and 2, for higher resolution data for the early years.


   Figure 4. Radial Distance and Heliographic Latitude of Ulysses from Launch Through 1999   14

   The planned post-maneuver elements of the probe during the Jupiter
   encounter in 1992 has been used in the computation.
 
  
   Figure 5.  Earth-Sun-Probe Angles                                                         15

   Time coverage is 1989 through 1991. Intersection of curves for a pair of
   probes signifies radial alignment if the ecliptic latitude of the probes are near
   enough to zero: they may not be for Pioneer 11 and Voyager 1 and 2.


   Figure 6.  Earth-Sun-Probe Angles                                                         16

   Time coverage is 1992 through 1994. Ulysses also is well below the
   ecliptic plane.
 

   Figure 7.  Earth-Sun-Probe Angles                                                         17

   Time coverage is 1995 through 1997 but with PVO eliminated. Ulysses also is
   well above from the ecliptic plane.


   Figure 8.	Earth-Sun-Probe Angles                                                      18

   Time coverage is 1998 through 1999. Ulysses tends to be well below the
   ecliptic plane.

   Figure 9.	Earth-Sun-Probe Angle of ICE                                                19
   
   Figure 10.	Earth-Sun-Probe Angle of Sakigake                                           20
   
   Figure 11.	A Three Dimensional Sketch of the Ulysses Trajectory                        21


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