Re: Fate of Lockheed Martin Athena 2 and Ikonos 1 satellite unknown

Björn Gimle (b_gimle@algonet.se)
Wed, 28 Apr 1999 09:14:02 +0200

> >>From a Kevin Fetter posting:
> >IKONOS 1
> >1 28000U 99XXXX   99117.80454155  .00000000  00000-0  00000-0 0     0
> >2 28000  98.1840 185.3400 0010520  69.9850 279.8240 14.62686263    04
> 
Philip Chien wrote:
> this is incorrect.  It's the orbit of a satellite launching to the
> North-Northwest from Vandenberg which would be a violation of the range
> rules.  The Athena/Ikonos launch was to the South-Southwest.
> 
No, it's not. My predictions showed a S-N pass around 19:47 UT at 59 N, and
the following SkyMap 6.3+ .cfg file shows the ground tracks over Vandenberg.

Spot 3 passed in the same direction at 18:25, which can also be seen on
the skymap, so they would be very close on the first orbit.

[SkyMap]
Script= 
DefDir=C:\386\D-DISK\SATPROG\SKYMAP
StarFile=hip8.dat
CatEpoch=J2000
EphemFile=C:\TLE\MOLNIY~1.TLE
CityFile=skymap.cty
SiteName=Earth's c
HPGLFile=Earthsc.plt
LandFiles=world.pnt
Report=Earthsc.rep
MapTitle=Ikonos-1 launch and Spot-3
CatJD=2451545.000000
Lat= 90.000000
Long= 180.000000
Alt=   -6363000.
Zone=  0.0
DelRA= 30.0000000
DelDec= 20.0000000
MinMag=-1.00
MaxMag= 7.00
MinIdx= 1
MaxIdx=10
MapDate= 1999/ 4/27
MapTime=18:22: 0
TrackRes=  60
TickRes=  60
TagRes= 120
RA= 12.9448021
Dec= 53.7427074
Azim=124.5199747
Elev= 33.7381249
FOV= 15.6406248
EpochJD=2433282.423459
EquinoxJD=2433282.423459
MaxAlt=  2000.0
MinRange=     0.0
MaxRange= 44444.0
SearchDur= 2.000
MinElev= 10.00
Culmination=  0.00
LabelMag= 4.00
DeepMag= 6.00
Transit=0
SunDown=  0.00
TagType=3
DefSatMag= 7.0
RocketMag= 5.5
DimmestSat=11.0
SSLabel=2
Tolerance=0.25
Warn=1
Mirror=-1.
Screen=0
DragUnc=   50.00
TranObj=Sirius
TranRA= 6.752466
TranDec=-16.716190
PlotMode=Satellite
Model=SGP4 
Projection=Stereographic
TrackType=Horizon
LocalStart=Off
LocalTag=Off
LabelStar=On
Occult=Off
AllSats=Off
DrawLand=On
ProperMotion=On
Precess=On
Nut=Off
NGC=On
HPGL=On
TrueSize=Off
HDMS=Off
DeepSky=Off
Constellation=Off
StarMag=Off
EqOfDate=Off
EpOfDate=Off
Greek=On
PCTime=Off
LJ4=On
UseTLEMag=On
CheckUmbra=Off
DimPlanets=On
TLEWarn=On
SatJD( 0)=2451296.427222
SatDur( 0)=    6.00000
SatName( 1)=USA 86
NORAD( 1)=22251
1 22251U 92 83  A 99100.83770410  .00001900  00000-0  12319-3 0    05 
2 22251  97.7102 155.0211 0416000 263.5030  96.4969 14.57341324    02 
SatJD( 1)=2451296.265278
SatDur( 1)=  104.00000
SatName( 2)=IKONOS 1
NORAD( 2)=48000
1 48000U 99XXXX   99117.80454155  .00000000  00000-0  00000-0 0     0 
2 48000  98.1840 185.3400 0010520  69.9850 279.8240 14.62686263    04 
SatJD( 2)=2451296.265278
SatDur( 2)=  104.00000
SatName( 5)=USA 129         15.0  3.0  0.0  5.1 v
NORAD( 5)=24680
1 24680U 96072  A 99101.86894882  .00020000  00000-0  25821-3 0    03 
2 24680  97.9300 164.8539 0501003 307.8333  52.1665 14.79278088    01 
SatJD( 5)=2451296.265278
SatDur( 5)=  104.00000
SatName( 8)=Spot 3           4.7  1.8  1.8  6.0 d
NORAD( 8)=22823
1 22823U 93061A   99102.13589910 -.00000043 +00000-0 +00000-0 0 09441 
2 22823 098.6445 169.6933 0014589 324.1042 035.9152 14.17164048287003 
SatJD( 8)=2451296.265278
SatDur( 8)=  104.00000
SatJD(11)=2451296.427222
SatDur(11)=  104.00000
AutoJD=2451296.427222
AutoTT=1
AllFileTT=1