[net.ham-radio] UoSAT-B Orbital Params

karn@allegra.UUCP (02/21/84)

Phil,

Here are some parameters from a set of 200 that I thought you might
be able to use to get a set of AMSAT standard keplerian elements for
UOSAT-B.

Launch.   17:57.00 UTC March 1, 1984
UOSAT-B deploy.  Launch + 4300 seconds.

Following values are at the time of UOSAT-B deploy.

Rotation of line of Apsides, + is in the direction
     of the orbit:     -3.12357 deg/mean solar day

Ascending node right ascension (ECI system): 175.3923 deg

Eccentricity: .4139783 E-3

Apogee:  372.62 n.mi

Perigee:  369.46 n.mi

Inclination:  98.25967 deg

Nodal regression, east is positive:  1.00073 deg/mean solar day

True anomoly: 226.9766 deg

Argument of perigee:  174.16983

Instantaneous geocentric latitude:  40.629187

Instantaneous longitude, positive west:  -29.650437

Period:  98.5 min

Time since perigee:  3726.775 sec (may be bogus, since 50 seconds
                                   later, this value is 3549.826)

Let me know if there are any other values or info you need.


The figures I've got are for the second stage.  The last time the second
stage and uosat-b are in similar orbits is launch +5453 seconds.  At that
time, the lat. is 67.208371 and long. is 127.766825.

[The preceeding messages have been relayed from Harold Price, NK6K, who
is with the U of Surrey launch campaign team at Vandenburg Air Force
Base.  I will be posting additional information on the launch of UoSAT-B
as it arrives. -Phil, KA9Q]