boundary="_000_25CDFAC1A563514A82FC2E7BD9609F2F07876CTWMBXP03cnesnetad_" ****************************************************************************** dorismail 15-May-2012 09:19:27 Message No 0821 ****************************************************************************** Author: Ferrage Pascale Subject: JASON 1 orbit change / DORIS DATA delivery to IDS Data Centers Dear colleagues, As announced in DORISMAIL 818, Jason1 is now on a geodetic orbit, and the m= ission was resumed on May 7. the new orbit caracteristics are: * Semi major axis 7702.437 km * Eccentricity 1.3 to 2.8 E-4 * Altitude equator 1324.0 km * Orbital period 6730s (1h52'10'') * Inclination 66.042 deg. * Cycle 406 days * Sub cycles 3.9, 10.9, 47.5, 179.5= days Dissemination of DORIS data to the IDS Data Centers (CDDIS/IGN) was interru= pted during the safe Hold mode and during the orbit change : - No data was delivered from February 16, to February 29 : Safe Hold Mode = begin =3D=3D> end - No data was delivered from March, 03, 13:40 to May, 7 : back to Safe Hol= d Mode =3D=3D> end of orbit change After the orbit change, DORIS data will be delivered again to the IDS data = Centers: ---------------------------------------------------------------------------= ------------------------ DORIS 1B data and the POE orbit (SP3 format) files will contain arc measure= ments of 10.9 days corresponding to the sub-cycle lenght . The cycle numbering will restart at 500 , and will begin on May 7 at 14h29,= the DORIS data will be delivered as usualy 4 weeks later. ---------NEXT DATA: -------------------------- [Cycle 500 (10.9 days)] from May 7 at 14h29mn TUC to May 18 at 12h 12mn 3= 0s [Cycle 501 (10.9 days)] from May 18 at 12h 12mn 30s to May 19 at ~ 9h 55mn.= .. And so on... Best regards, Pascale FERRAGE _____________________________________________________ CNES - International DORIS Service (IDS): http://ids-doris.org/ DCT/ME/OT- Bpi 612 Phone : 33 - (0)5 61 28 30 66 18, avenue Edouard Belin Fax : 33 - (0)5 61 28 25 95 31 401 TOULOUSE CEDEX 9 Email : Pascale.ferrage@cnes.fr _____________________________________________________ Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr