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EUROPEAN SPACE AGENCY
EUROPEAN SPACE OPERATIONS CENTRE
GROUND SYSTEMS ENGINEERING DEPARTMENT
Space Debris Office

CLASSIFICATION OF GEOSYNCHRONOUS OBJECTS
ISSUE 11

by R. Choc and R. Jehn

Produced with the DISCOS Database

February 2009
ESOC Robert-Bosch-Str. 5, 64293 Darmstadt, Germany


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3.6 Objects in a libration orbit around both stable points

In the case where the object is in a libration orbit around both stable points, the following data are given:

It is important to note that this category is special and only a very small number of objects is concerned. It is a borderline case, just between a libration around one stable point and a drift around the Earth. Thus, some perturbations which could be neglected in the other cases have a strong influence here. The main consequence is that this category is more sensitive to errors in the measurements than the others and the libration period may have a low accuracy.

The longitude history of these objects is plotted in Figures 1.

L3.nn COSPAR NAME Date Plib Δλ λmin λmax Nly Ntot MJD a e i Ω ω λ
L3 . 1 71095B OPS 9432 (DSICS II F-2) 24-DEC-08 2936 334.9 174.6 149.5 47 773 21542.327500 42144.29901 0.0007063 12.9059 337.1876 300.3145 125.9948
L3 . 2 82044F Proton-K fourth stage (Block DM) 26-DEC-08 2936 334.9 174.6 149.5 50 714 21544.228542 42175.39134 0.0014332 15.1945 5.1926 3.2670 187.8508
L3 . 3 91054D IUS stage 2 25-DEC-08 2936 334.7 174.7 149.4 49 653 21543.235069 42136.56643 0.0037533 13.0957 39.5878 179.4979 220.8403
L3 . 4 91064A Cosmos 2155 24-DEC-08 2942 332.9 175.7 148.5 49 842 21542.000532 42186.63190 0.0005128 11.4900 41.3682 234.5474 308.1986
L3 . 5 97083A Intelsat 804 21-DEC-08 2944 332.5 175.9 148.3 50 546 21539.542384 42162.88900 0.0006784 3.6676 75.3408 196.6607 149.2725
L3 . 6 90094A Gorizont 21 29-DEC-08 3104 326.2 179.1 145.3 50 896 21547.445197 42173.89824 0.0004174 11.7645 38.2442 150.2453 139.7606
L3 . 7 00029A Gorizont 33 31-DEC-08 3113 326.1 179.2 145.2 52 435 21549.797755 42199.07544 0.0001972 6.2738 67.5645 275.5483 68.4286
L3 . 8 97041A Cosmos 2345 22-DEC-08 3162 325.4 179.5 144.9 49 551 21540.765150 42132.05752 0.0159191 8.4163 61.5048 127.5247 55.7095
L3 . 9 87091D Proton-K fourth stage (Block DM) 31-DEC-08 3230 350.0 166.9 156.9 49 807 21549.342245 42166.59029 0.0016685 12.7181 25.0251 89.0302 161.9166
L3 . 10 94067D Proton-K fourth stage (Block DM-2M) 22-DEC-08 3403 323.6 180.4 144.0 49 611 21540.379977 42166.35618 0.0006691 10.7902 48.2365 292.3566 180.0239
L3 . 11 95045A Cosmos 2319 31-DEC-08 3519 323.2 180.6 143.8 50 667 21549.366169 42172.30009 0.0002992 9.4692 56.5565 94.7262 184.6117
L3 . 12 91079A Cosmos 2172 22-DEC-08 3537 323.1 180.7 143.8 50 805 21540.348681 42155.66735 0.0007989 11.3448 42.5856 219.4726 185.6965
L3 . 13 85007A Gorizont 11 25-DEC-08 3551 323.1 180.7 143.8 49 800 21543.238252 42180.25896 0.0003638 13.4013 15.1414 271.8515 195.2194
L3 . 14 87084A Cosmos 1888 31-DEC-08 3636 322.9 180.8 143.7 50 921 21549.215787 42142.71654 0.0001933 12.6494 25.3269 236.0750 207.6561
L3 . 15 94030A Gorizont 30 23-DEC-08 3653 322.9 180.8 143.7 49 744 21541.994838 42149.49151 0.0003584 10.2316 51.5303 181.6778 320.4339
L3 . 16 86027A Cosmos 1738 31-DEC-08 3691 322.8 180.8 143.6 50 846 21549.229132 42147.93460 0.0014346 13.6814 19.8090 297.5067 197.1922
L3 . 17 94060A Cosmos 2291 26-DEC-08 3925 322.5 181.0 143.5 49 714 21544.184352 42132.55024 0.0002034 9.9861 53.0562 5.3543 251.5895


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