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Updated STS-90 Orbital Data



I updated the STS-90 Keplerian elements because of today's 
launch scrub.  The elements below represent the new estimated
launch time.

---------------------------------------------------------------

Below is the nominal State Vector and Keplerian Elements for 
STS-90.  The vector data comes from NASA; the Keplerian Elements 
were computed from the vector.  

This file may be read by VEC2TLE version 9648 to update your 
Keplerian Elements text file.

Vector format = 10117
Satellite Name:         STS-90
Catalog Number:         99990            
Epoch MET:                  0.03004064800
                           0/00:43:15.512 MET
EFG E:                   8576405.78999998 ft
    F:                   19366030.3700000 ft
    G:                   -5403492.2142374 ft
    Edot:                -18698.014221237 ft/s
    Fdot:                4176.85649926960 ft/s
    Gdot:                -14685.206890849 ft/s
ndot/2 (drag):              0.00005747803 rev/day^2
nddt/6:                       1.37609E-10 rev/day^3
Bstar:                        9.51964E-06 1/Earth Radii
Elset #:                                1
Rev @ Epoch:                1.56427976132

Launch scheduled: 17-APR-98 / 18:19:00.000 UTC

The following Keplerian elements were computed by VEC2TLE from this
vector, using a 0.1 drag multiplier:

STS-90      
1 99990U          98107.79323509  .00005748  13761-9  95196-5 0    19
2 99990  39.0116 359.0134 0021068   2.9536 200.1873 16.01509467    16

Satellite: STS-90      
Catalog number: 99990
Epoch time:      98107.79323509
Element set:       1
Inclination:       39.0116 deg
RA of node:       359.0134 deg
Eccentricity:    0.0021068
Arg of perigee:     2.9536 deg
Mean anomaly:     200.1873 deg
Mean motion:   16.01509467 rev/day
Decay rate:    5.74780e-05 rev/day^2
Epoch rev:               1
Checksum:              297

VEC2TLE may be downloaded from:

http://www.amsat.org/amsat/sarex/orbit.html

Ken Ernandes
n2wwd@amsat.org
http://www.mindspring.com/~n2wwd




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