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EUROPEAN SPACE AGENCY EUROPEAN SPACE OPERATIONS CENTRE GROUND SYSTEMS ENGINEERING DEPARTMENT Space Debris Office
CLASSIFICATION OF GEOSYNCHRONOUS OBJECTS
February 2008 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 | 82044F | Proton-K fourth stage (Block DM) | 2936 | 334.9 | 174.6 | 149.5 | 47 | 664 | 21175.916794 | 42186.00595 | 0.0015100 | 14.9833 | 8.2918 | 4.7193 | 306.1923 | L3 . 2 | 91054D | IUS stage 2 | 24-DEC-07 | 2936 | 334.7 | 174.7 | 149.4 | 48 | 603 | 21176.379826 | 42167.38879 | 0.0037746 | 12.3772 | 43.4044 | 168.8818 | 174.2060 |
| L3 . 3 | 71095B | OPS 9432 (DSCS II F-2) | 30-DEC-07 | 2936 | 335.2 | 174.5 | 149.6 | 48 | 726 | 21182.656887 | 42151.92729 | 0.0006997 | 13.1875 | 339.7873 | 267.3853 | 4.5300 |
| L3 . 4 | 91064A | Cosmos 2155 | 26-DEC-07 | 2942 | 332.8 | 175.7 | 148.5 | 48 | 792 | 21178.856539 | 42175.57172 | 0.0005372 | 10.7676 | 44.8184 | 206.5960 | 1.4645 |
| L3 . 5 | 97083A | Intelsat 804 | 26-DEC-07 | 2944 | 332.6 | 175.8 | 148.4 | 47 | 496 | 21178.797176 | 42131.03462 | 0.0008332 | 2.7534 | 79.9336 | 195.3031 | 57.5915 |
| L3 . 6 | 90094A | Gorizont 21 | 27-DEC-07 | 3103 | 326.2 | 179.1 | 145.3 | 46 | 845 | 21179.567616 | 42134.38752 | 0.0003657 | 11.0697 | 41.6372 | 142.7836 | 101.6533 |
| L3 . 7 | 97041A | Cosmos 2345 | 26-DEC-07 | 3172 | 325.2 | 179.6 | 144.8 | 47 | 501 | 21178.959896 | 42158.05498 | 0.0157437 | 7.5424 | 65.7829 | 116.4068 | 346.6795 |
| L3 . 8 | 87091D | Proton-K fourth stage (Block DM) | 27-DEC-07 | 3206 | 349.4 | 167.2 | 156.7 | 48 | 757 | 21179.283299 | 42181.45714 | 0.0018084 | 12.1848 | 28.0331 | 84.0090 | 190.8812 |
| L3 . 9 | 94067D | Proton-K fourth stage (Block DM-2M) | 24-DEC-07 | 3465 | 323.3 | 180.6 | 143.9 | 46 | 561 | 21176.136019 | 42195.81414 | 0.0006550 | 9.9962 | 51.9877 | 281.5921 | 270.6057 |
| L3 . 10 | 94030A | Gorizont 30 | 27-DEC-07 | 3488 | 323.3 | 180.6 | 143.9 | 47 | 694 | 21179.333727 | 42146.69371 | 0.0004374 | 9.4178 | 55.3836 | 161.6780 | 199.7851 |
| L3 . 11 | 91079A | Cosmos 2172 | 25-DEC-07 | 3596 | 323.0 | 180.7 | 143.7 | 48 | 754 | 21177.257280 | 42191.39830 | 0.0008192 | 10.6080 | 46.0888 | 207.8580 | 220.0082 |
| L3 . 12 | 85007A | Gorizont 11 | 26-DEC-07 | 3598 | 323.0 | 180.7 | 143.7 | 48 | 750 | 21178.906979 | 42181.63898 | 0.0003269 | 13.0314 | 17.9342 | 246.4813 | 316.3898 |
| L3 . 13 | 87084A | Cosmos 1888 | 27-DEC-07 | 3671 | 322.8 | 180.8 | 143.7 | 48 | 870 | 21179.279688 | 42178.36252 | 0.0002532 | 12.1125 | 28.3256 | 181.7826 | 192.2687 |
| L3 . 14 | 95045A | Cosmos 2319 | 26-DEC-07 | 3691 | 322.8 | 180.8 | 143.6 | 45 | 616 | 21178.076782 | 42188.82852 | 0.0003128 | 8.5980 | 60.7186 | 85.8988 | 298.8424 |
| L3 . 15 | 86027A | Cosmos 1738 | 27-DEC-07 | 3754 | 322.7 | 180.9 | 143.6 | 48 | 795 | 21179.240243 | 42183.26243 | 0.0011702 | 13.2246 | 22.9014 | 293.5173 | 200.9644 |
| L3 . 16 | 94060A | Cosmos 2291 | 24-DEC-07 | 3775 | 322.7 | 180.9 | 143.6 | 47 | 664 | 21176.397743 | 42167.54524 | 0.0001422 | 9.1473 | 57.0350 | 356.6461 | 181.2238 |
| 67026A | 02-DEC-07 | 3992 | 322.5 | 181.0 | 143.5 | 5 | 302 | 21154.644444 | 42150.19061 | 0.0038359 | 9.2769 | 319.1617 | 323.5989 | 15.2218 |
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