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REVOSAT
1 juin 2008

Summary of 2005-2008 Revosat activity

Revosat_june_recap_sat_2006_2008Revosat_june_Summary_2005_2008_REVO Revosat has gathered all the photographied satellites over AUFFARGIS (France).With these photos, their trajectories have been determined ie height, inclination orbit, ascending node.We...
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7 mai 2008

THE LAST REVOLUTIONS OF USA 193

pres_avril_polaires_de_USA_193 pres_avril_THE_LAST_REVOLUTIONS_OF_USA_193 pres_avril_USA_193_Honolulu On march 2008, we computed the spells of visibility and the unusual movement of perigee of USA 193(the argument of perigee had been kept ~100° to destroy...
Posté par revosat à 01:18 - Commentaires […] - Permalien [#]

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2 avril 2008

PRECESSION OF ATV AND ISS BEFORE DOCKING

PRECESSION OF ATV AND ISS BEFORE DOCKING
revosat_mai_PRECESSION_OF_ATV_AND_ISS__BEFORE_DOCKINGrevosat_maiDocking_ATV During march ATV jules Verne(ESA) has been launched to be docked to ISS. (Inclination 51.6°)See photo of ISS. The dashed trajectory on the photo allowed to get the time elapsed...
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7 mars 2008

INCLINATION OF THE TRACK OF MOLNIYA TYPICAL AND MOLNIYA-1_11474

fevrier_I_and_dI_OF_MOLNIYA_TYPICAL_and_11474 fevrier_Moniya_1_11474inclination_caract fevrier_Moniya_typical_inclination_caracteristique The elements of Molniya typical are 40000kms*500kms*63.4°.Those of 11474 15642*433*62.7°. Molniya typical is very...
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7 février 2008

ABOUT USA 193-

ABOUT USA 193-
march_revosatspell_visibility_USA_193 march_revosatABOUT_USA_193 march_revosat_perigee_de_USA_193 We got photos of that satellite on 30 October 2007.19h18(1). Then we computed orbital elements with fast Kepler soft. and drew the last two spells of visibility...
Posté par revosat à 10:21 - Commentaires […] - Permalien [#]

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7 janvier 2008

INCLINATION OF THE GROUND TRACK OF A SATELLITE VERSUS LATITUDE

revosatjanvierinclination_of_iridium revosatjanvieriridium_pente_au_sol_versus_latitude The inclination of the trajectory of a satellite in the sky is sometimes quite different from that we expect, considering (i) inclination of the orbit. Two cases.I)Quasi...
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7 novembre 2007

ABOUT MOLNIYA-3

about_molniyaprec_molniyarho_theta_molniya_3 The elements of typical Molniya are 40000/500 kms/63.4°.Such elements give a semi major axis A=(40000+500)/2+6378=26628kmsC=26628-(6378+500)=19750 kmsExcentricity=C/A=19750/26628=.7417Period T=26628^1.5/6028.9/60...
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7 octobre 2007

AUREOLE-2 rocket

aureole_resonances polaire_aureole_2 resonance_nr_np_aureole resume_aureole tab_complet_resonance On the beginning of 2007, we studied the predictions of transits of aureole-2 roc. By now we computed the height versus anomaly and the main resonance 15/1...
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7 septembre 2007

ABOUT USA 129

about_usa_129 chute_du_perigee_usa_129 passage_usa_129 usa129_polaires We saw that spy satellite only when it is near the perigee because when apart, it is too high (See Revosat on 31 may 07).So we drew the visibility diagram with the argument of perigee...
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