These are the most frequently used words in this book.
180
360
add
angle
apparent
ascension
astronomical
au
between
calculate
calculated
calculating
calculations
called
centre
circle
convert
converting
coordinates
correct
correction
cos
date
day
decimal
declination
degrees
direction
distance
earth
eclipse
ecliptic
epoch
equation
equator
equatorial
example
expressed
figure
find
first
form
found
given
gst
horizon
hours
inverse
january
jd
julian
latitude
line
local
longitude
lst
may
mean
method
minutes
moon
motion
need
negative
node
now
number
observer
orbit
parallax
part
plane
planet
point
position
range
result
right
seconds
section
see
setting
sidereal
sin
since
solar
star
subtract
sun
system
table
take
tan
time
true
two
use
ut
value
year