EUROPEAN SPACE AGENCY EUROPEAN SPACE OPERATIONS CENTRE GROUND SYSTEMS ENGINEERING DEPARTMENT Space Debris Office
CLASSIFICATION OF GEOSYNCHRONOUS OBJECTS
February 2009 3.6 Objects in a libration orbit around both stable pointsIn 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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