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APPROXIMATE asteroid positions for HI1-A based on the file 20090312_080901_s4h1A.fts:
(Note: the pixel coordinate origin (0,0 location) is the lower-left corner) 

Asteroid designation/name:  X-position, Y-position
----------------
11 PARTHENOPE:  670, 669
38 LEDA:  186, 246
52 EUROPA:  912, 797
58 CONCORDIA:  894, 652
99 DIKE:  595, 707
111 ATE:  420, 334
121 HERMIONE:  755, 730
128 NEMESIS:  328, 710
139 JUEWA:  77, 459
205 MARTHA:  346, 370
224 OCEANA:  824, 395
234 BARBARA:  88, 831
238 HYPATIA:  889, 699
250 BETTINA:  886, 482
287 NEPHTHYS:  440, 794
313 CHALDAEA:  240, 600
423 DIOTIMA:  476, 853
442 EICHSFELDIA:  895, 725
505 CAVA:  898, 823
535 MONTAGUE:  871, 726
596 SCHEILA:  1007, 891
626 NOTBURGA:  410, 41
635 VUNDTIA:  25, 513
----------------
NOTE: Not all of these asteroids will be visible, and not all visible asteroids
are recorded in this file.  This is just a guide, not an exhaustive list.
Also note that for HI-1B, these positions have an error of up to +/- 10 pixels.