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SLR-Mail No.903

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Date:2002-02-22 16:42:00
Sender:R. Schmidt, R.Koenig, GFZ Potsdam <Roland Schmidt <rschmidt@gfz-potsdam.de>>
Subject:[SLR-Mail] No. 903: Preliminary Orbit Prediction Products GRACE
Author:R. Schmidt, R.Koenig, GFZ Potsdam
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SLR Electronic Mail 2002-02-22 16:42:00 UTC Message No. 903
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Author: R. Schmidt, R.Koenig, GFZ Potsdam
Subject: Preliminary Orbit Prediction Products GRACE

Dear colleagues,

today preliminary orbit prediction products for the GRACE satellites
have been distributed to the ftp sites at CDDIS, EDC and GFZ and via
email to the ILRS stations. The orbit prediction products are based
on the nominal separation information for the target launch date,
March 16th 2002, 09:23 UTC. It is planned to deliver an updated version
of these products few days prior to launch.

Please note the following additional information to SLRMAIL No.899

o The access to the ftp-site at GFZ is as follows:

server: ftp.gfz-potsdam.de
user: anonymous
passwd: your email-address

dir: pub/grace/graceA/slr -> GRACE-A
pub/grace/graceB/slr -> GRACE-B

files: [graceA|graceB]_irvs_yymmdd_c.gfz -> IRVs
[graceA|graceB]_drag_yymmdd_c.gfz -> DRAG
[graceA|graceB]_sao_yymmdd_c.gfz -> SAO
[graceA|graceB]_tle_yymmdd_c.gfz -> TLE

Above file naming convention is also valid for the products stored at
CDDIS and EDC.

o In the product files the ´DSIDP´ record is

DSIDP GRCA.ORB.PRD -> GRACE-A
DSIDP GRCB.ORB.PRD -> GRACE-B

In case of any questions and/or suggestions please feel free to contact
us under

rschmidt@gfz-potsdam.de

Best regards
R. Schmidt
R. Koenig, Laser Tracking System Manager

From: Roland Schmidt

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