The latest ellipse sizes and azimuths for the top 6 sites are:

Site	Ellipse length x width (km)   (°)	Azimuth
MER-A
Isidis	118 x 15	88
Hematite	112 x 16	83
Gale	104 x 17	81
Melas	100 x 17	80
Eos	94 x 18	77
Gusev	94 x 18	76
MER-B
Hematite	108 x 17	87
Melas	97 x 18	83
And note that for MER-B, a site at 10 N latitude is:
10N	137 x 15	95

For all of the sites except Gusev and Eos, all of these ellipses are smaller than the previous ellipse sizes that were based on 5 TCMs without DeltaDOR. Science spokespersons should include new ellipses in their presentations at the upcoming workshop. For nadir sites not included above, attached below is a graph of ellipse length and azimuth versus latitude that can be used to estimate ellipse size and orientation. All of the top six sites remain viable, although the edges of the Gale ellipse cannot avoid steep slopes.

In addition, we notified you of 9 potential new sites that appeared viable with ellipses smaller than those above in an e-mail dated 8/24/01. All but three of these sites (Crommelin crater, Magaritifer Valles/Basin, and SE Melas Chasma) remain viable with the slightly larger ellipses reported herein. We will add discussion of the remaining 6 sites (Isidis, 2 Elysium, Ares Vallis, Sinus Meridiani, and Highlands) to the workshop agenda.