Caption: An Euler diagram showing the relationship between Solar System objects. The Sun and artificial satellites have been excluded.
Features:
Obviously there is a
continuum
between pure
rocky bodies
and
rocky-icy bodies
that could be close to
pure ices.
In the Solar System,
all astronomical objects,
except the Sun and the
gas giant planets
(including the ice giant planets),
are
rocky bodies
and
rocky-icy bodies.
Rocky bodies
tend to be within the
snow line (AKA frost line)
(for water ice)
and rocky-icy bodies
beyond it.
The current snow line
(which is NOT the same as the
snow line at
Solar System formation
(4.6 Gyr BP))
is ∼ 5
astronomical units (AU)
(Wikipedia:
Frost line: Current snow line versus formation snow line).