|
Element |
Symbol |
Value |
|
Epoch |
to |
05:54:21.171 UTC December 16, 2007 |
|
Inclination |
i |
51o.9970 |
|
R.A.
of
the
Ascending Node |
aW0 |
251o.0219 |
|
Eccentricity |
e |
0.0001492 |
|
Argument of Perigee |
w0 |
33o.8641 |
|
Mean Anomaly at TLE Epoch |
Mo |
326o.2322 |
|
Mean Motion |
n |
12.62256095
orbits /
solar day |
|
Propagation Time |
Dt |
1.7677141
solar days |
|
Mean Anomaly at Time t |
M(t) |
1.37777389 radians (78o.940629) |
|
True Anomaly at
Time t |
n(t) |
78o.95065818 |
|
Semi-major Axis |
a |
7791.787473 km |
|
Perigee Distance |
P |
7790.624938 km |
|
Geocentric Distance |
r(t) |
7791.564499 km |
|
Precessed R.A. of Asc. Node |
aW(t) |
245o.6400244 |
|
Precessed Arg. of Perigee |
w(t) |
37o.77767416 |
|
Argument of Latitude |
m(t) |
116o.7283323 |
|
R.A. Difference |
Da |
129o.278845 |
|
Geocentric R.A. |
ag |
14o.9188694 |
|
Geocentric Declination |
dg |
+44o.73125163 |
|
Geocentric Cartesian x |
xg |
5348.663965 km |
|
Geocentric Cartesian y |
yg |
1425.05581 km |
|
Geocentric Cartesian z |
zg |
5483.565179 km |
|
Observer Geodetic Longitude |
q |
-75o.6883 |
|
Observer Geodetic Latitude |
l |
+44o.5903 |
|
Observer Geocentric Dec. |
di |
+44o.5903 |
Next, we will require the Local Sidereal Time (ai)
observed at the chosen location at
Time t. You can determine this
value with most planetarium software or using
the Internet. When entering
your longitude in any sidereal time calculators, be very careful of the
convention used!
The Geocentric Right Ascension of the observing
location is its Local Sidereal Time at Time t.
In this example:
ai(t)
= 15o.419875
|
