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EUROPEAN SPACE AGENCY EUROPEAN SPACE OPERATIONS CENTRE GROUND SYSTEMS ENGINEERING DEPARTMENT Mission Analysis Office
CLASSIFICATION OF GEOSYNCHRONOUS OBJECTS
January 2005 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 |
| OPS 9432 (DSCS II F-2) | 2937 | 335.4 | 174.4 | 149.7 | 49 | 578 | 20087.181343 | 42175.73694 | 0.0002317 | 14.0469 | 347.9329 | 193.2743 | 183.7166 | |||
| L3 . 2 | 91054D | IUS stage 2 | 30-DEC-04 | 2938 | 333.9 | 175.1 | 149.0 | 40 | 465 | 20087.668542 | 42199.82324 | 0.0033649 | 10.1505 | 53.7249 | 132.9438 | 73.8937 |
| L3 . 3 | 91064A | Cosmos 2155 | 27-DEC-04 | 2943 | 332.7 | 175.7 | 148.4 | 50 | 651 | 20084.823600 | 42144.87190 | 0.0000876 | 8.5148 | 53.7845 | 151.9059 | 20.6081 |
| L3 . 4 | 90094A | Gorizont 21 | 29-DEC-04 | 3021 | 328.1 | 178.1 | 146.2 | 48 | 708 | 20086.301979 | 42144.25309 | 0.0005995 | 8.9243 | 50.2530 | 58.8245 | 203.4925 |
| L3 . 5 | 87091D | Proton-K fourth stage (Block DM) | 29-DEC-04 | 3145 | 347.8 | 168.0 | 155.9 | 47 | 617 | 20086.418275 | 42173.60485 | 0.0023111 | 10.5783 | 35.5765 | 51.5200 | 147.0200 |
| L3 . 6 | 97041A | Cosmos 2345 | 30-DEC-04 | 3314 | 324.0 | 180.2 | 144.2 | 47 | 355 | 20087.271806 | 42197.00528 | 0.0156530 | 4.8198 | 77.8407 | 80.4500 | 242.5209 |
| L3 . 7 | 95045A | Cosmos 2319 | 31-DEC-04 | 3512 | 323.2 | 180.6 | 143.8 | 48 | 479 | 20088.121632 | 42137.13989 | 0.0006079 | 5.9642 | 71.9189 | 19.2864 | 288.1692 |
| L3 . 8 | 94067D | Proton-K fourth stage (Block DM-2M) | 29-DEC-04 | 3728 | 322.7 | 180.9 | 143.6 | 41 | 428 | 20086.637870 | 42196.86513 | 0.0005374 | 7.5490 | 61.9079 | 280.3087 | 93.7206 |
| L3 . 9 | 91079A | Cosmos 2172 | 29-DEC-04 | 3771 | 322.7 | 180.9 | 143.6 | 44 | 614 | 20086.830729 | 42181.35555 | 0.0003739 | 8.3247 | 55.1363 | 179.2397 | 17.4328 |
| L3 . 10 | 85007A | Gorizont 11 | 29-DEC-04 | 3801 | 322.6 | 180.9 | 143.6 | 40 | 611 | 20086.439560 | 42181.13443 | 0.0001674 | 11.8870 | 25.3691 | 11.0590 | 128.9513 |
| L3 . 11 | 87084A | Cosmos 1888 | 30-DEC-04 | 3836 | 322.6 | 180.9 | 143.5 | 43 | 729 | 20087.829699 | 42170.13141 | 0.0003311 | 10.4962 | 35.8481 | 52.1095 | 357.6190 |
| L3 . 12 | 86027A | Cosmos 1738 | 28-DEC-04 | 3904 | 322.5 | 181.0 | 143.5 | 43 | 656 | 20085.814144 | 42171.56585 | 0.0012301 | 11.8320 | 30.9794 | 274.4658 | 0.1588 |
| 3929 | 322.5 | 181.0 | 143.5 | 49 | 550 | 20082.955706 | 42165.97826 | 0.0002956 | 6.8644 | 65.7045 | 63.8847 | 346.7402 |
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