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REVOSAT

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...
Posté par revosat à 16:16 - Commentaires […] - Permalien [#]

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14 août 2007

VISIBILITIES OF AUREOLE 2 ROCKET

VISIBILITIES OF AUREOLE 2 ROCKET
visibility_of_aureole_2_rocketdiag_aureole2_roc Aureole 2 rocket is the more visible of series Aureole. Its orbit is very elliptic 364*987 Kms*74°(ESA-NASA) so its visibility is function of the shift of the ascending node and also the rotation of perigee....
Posté par revosat à 06:15 - Commentaires […] - Permalien [#]

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14 juillet 2007

SEASAT 1 ALWAYS MAJESTUOUS

SEASAT 1 ALWAYS MAJESTUOUS
seasat_majestic seasat_1_always_majestuous Since its launch , its altitude decreased from 800 kms on 1978 to 750kms on 2007 so it became brighter every year. Its transit seems to be that of a mere heliosynchronous(98°) one but the computer gives with...
Posté par revosat à 06:26 - Commentaires […] - Permalien [#]

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14 juin 2007

Resurs 1-4 rocket and Envisat

Resurs 1-4 rocket and Envisat
recap_sat_2006_2007resurs_1_4_and_envisat tableau__precession On this spring, the precession of this satellite had been –23mn/year, function of its altitude, inclination and excentricity. Its RA of ascending node (RAAN) had been the same that of Envisat...
Posté par revosat à 06:30 - Commentaires […] - Permalien [#]

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14 mai 2007

METOP-A FLARING AND KEYHOLE USA 129

METOP-A FLARING AND KEYHOLE USA 129
tableau__precession These two satellites are heliosynchronous and the time of their trajectory zenithal ascending transit ZAT are at present quasi the same.22H45(2).So regularly they transit together see photo with Metop-A flaring and USA 129 mag4.4 on...
Posté par revosat à 06:34 - Commentaires […] - Permalien [#]

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14 avril 2007

How to identify WEAK satellite tracks on photos

How to identify WEAK satellite tracks on photos
metop_abrixasmetop_a_and_abrixas_traces Sometimes we got weak or short track lines on photos and the chopping of the line enabling to get the time elapsed is hardly perceptible. See photo here after(Canes venatici CVN) and ground track on 5 April 07,...
Posté par revosat à 06:35 - Commentaires […] - Permalien [#]

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14 mars 2007

Resonance 16 periods and crash of COSMOS 1025

Resonance 16 periods and crash of COSMOS 1025
c1025_decayingc1025_last_revc1025_resonance From photos jan 2006, we determined the diagram of zenital visibility of cosmos 1025 till the beginning of march 2007 to see eventually its decay because its height was very low. We computed that its last ascending...
Posté par revosat à 06:39 - Commentaires […] - Permalien [#]

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7 avril 2003

How to observe satellites

How to observe satellites
Today, with using REVOSAT’s software it is easy to know the decreasing height of the station, then the increasing height by the boosting of the shuttle or supply vehicle.But also after the departure of the shuttles from the Cape Canaveral, their passage...
Posté par revosat à 10:04 - Commentaires […] - Permalien [#]

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