Last Updated：2025/11/27
A coordinate time standard intended to be used as the independent variable of time for all calculations pertaining to precession, nutation, the Moon, and artificial satellites of the Earth, equivalent to the proper time experienced by a clock at rest in a coordinate frame co-moving with the center of the Earth.
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Geocentric Coordinate Time
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Source Word
Geocentric Coordinate Time
Proper noun
A
coordinate
time
standard
intended
to
be
used
as
the
independent
variable
of
time
for
all
calculations
pertaining
to
precession,
nutation,
the
Moon,
and
artificial
satellites
of
the
Earth,
equivalent
to
the
proper
time
experienced
by
a
clock
at
rest
in
a
coordinate
frame
co-moving
with
the
center
of
the
Earth.
Japanese Meaning
地球中心座標時とは、歳差運動、章動、月および地球の人工衛星に関する計算の独立変数として使用される時刻の基準であり、地球中心とともに移動する座標系に固定された時計が経験する固有時に相当する。
Sense（1）
A
coordinate
time
standard
intended
to
be
used
as
the
independent
variable
of
time
for
all
calculations
pertaining
to
precession,
nutation,
the
Moon,
and
artificial
satellites
of
the
Earth,
equivalent
to
the
proper
time
experienced
by
a
clock
at
rest
in
a
coordinate
frame
co-moving
with
the
center
of
the
Earth.
