Table 2.5 (continued)
Region
Rough.
index
Characteristics and area [km
2
]
Sub-region c
Adjoins Imhotep and appears to be
at a level intermediate between
sub-regions a and b although it has
no contact with a. Generally
smooth with no major topographic
features.
Sub-region d
A steep cliff separates this level
from sub-region c. It is at a higher
topographic level—similar to b or
possibly slightly higher.
Sub-region e
The uppermost level. Separated
from d by a significant change in
slope. The steep cliff down to
Anhur sub-region c is strongly
apparent in the shape model.
Seth (Se) 16.16
Consolidated, possibly more brittle
in nature when compared to other
more strongly consolidated regions.
Dominated by circular and semicircular structures and talus.
4.66022
Ash (As) 15.74
Covered with a presumed sedimentary deposit producing smooth surface. Occasional exposures of more
consolidated but brittle material
below.
6.25734
Sub-region a
Adjoining Babi at an edge and the
Aten depression via a sharp change
in slope, this sub-region adjoins an
adjacent sub-region at a rough
hummocky interface. The
sub-region is mostly smooth with
some smaller depressions and
small cliffs covered in dust.
Sub-region b
Adjoining Seth, this sub-region is
smooth. Its boundary to Seth is
characterized by a transition to
rougher terrain and a substantial
change in slope.
Sub-region c
Adjoining Aten, this is rougher
terrain. It is topographically higher
than sub-region b and where it
meets sub-region b there are
arc-shaped cliffs.
Sub-region d
Dust coated. Smoother region.
Sub-region e
Sub-region containing the large
circular structure which may be the
result of impact. Possibly related
material outside the putative rim is
included.
(continued)
88
2 The Nucleus