Updated information on high altitude HAMR objects tracking by ISON Vladimir Agapov, Igor Molotov Roscosmos delegation Presentation for the WG1 session.

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Presentation transcript:

Updated information on high altitude HAMR objects tracking by ISON Vladimir Agapov, Igor Molotov Roscosmos delegation Presentation for the WG1 session 32 nd IADC meeting, Beijing

KIAM/ISON Database Current Status «High orbit» is defined as having period more than 200 min 4031 tracking high orbit objects with orbit epoch age not older than 1 year as of May 13, 2014:  3059 (75.9%) observing by ISON and having orbital data published at SpaceTrack  972 (24.1%) observing by ISON and partner teams only (no other public sources of orbital data) Total number of high orbit objects with A/m > 0.1 sq.m/kg: 704 (225 with orbital data available from both sources/ 479 with orbital data producing by ISON and partner teams only):  A/m between 0.1 and 1 sq.m/kg: 420 (222/198)  A/m more than 1 sq.m/kg (HAMR): 284 (3/281) – 7.04% of total tracking high orbit objects population and 28.91% of tracking by ISON only population Maximal A/m – 57.9 sq.m/kg 2

High orbit objects distribution (1) 3

High orbit objects distribution (2) 4

High orbit objects distribution (3) 5

High orbit objects distribution (4) 6

High orbit objects distribution (5) 7

High orbit objects distribution (6) 8

High orbit objects epoch age distribution 9

High orbit objects brightness distribution (1) 10

High orbit objects brightness distribution (2) 11

High orbit objects brightness distribution (3) 12

High orbit objects brightness distribution (4) 13

High orbit objects brightness vs. A/m distribution (1) 14

High orbit objects brightness vs. A/m distribution (2) 15

Conclusion ISON tracks nearly 25% more objects at high orbits (T>200 min) than it is published at SpaceTrack High orbit objects discovered by ISON are usually more faint than those included into the U.S. STRATCOM catalogue Due to more complex properties of ISON-discovered high orbit objects the orbital updated period is usually longer than for bright U.S SSN objects 16