Hi Björn (and all readers of Seesat); Those obs could be perectly from the IGS-9 launch. But its strange the too-much accuracy of the elset. Here the search elements that I've made for IGS-9 mission: IGS 9 payload 505 X 511 km 1 71002U 15602A 15032.22709490 0.00030000 00000-0 00000+0 0 05 2 71002 97.5051 104.2119 0004046 301.2708 29.2542 15.18152820 09 IGS 9 rocket 426 X 518 km 1 71003U 15603A 15032.22709490 0.00070000 00000-0 00000+0 0 01 2 71003 97.4511 104.2022 0067098 145.2888 190.6828 15.29983957 09 Both derived mainly using Ted Molczan's method. The #71003 elset fits impressively well with Russell's obs: 2420 1504 0.211 1204 16 1500402 203823.70 165937+334007 3.7 3.7 0 S 1500402 203906.92 181102+410941 3.9 3.9 0 S 1500402 221116.28 085944+280553 1.8 1.8 0 S 1500402 221221.25 054144+520248 6.3 6.3 0 S 18 1500402 212158.31 141413+202108 1.9 1.9 0 S 1500402 212246.08 152345+460835 2.5 2.5 0 S 20 1500402 220648.47 101614+175723 2.4 2.4 0 S 1500402 220712.31 093353+312413 2.8 2.8 0 S 999 And with your obs: 99991 15 004B 5919 E 20150420203254000 18 25 1053601+092987 55 S 99991 15 004B 5919 E 20150420203317500 18 25 1026769+201822 55 S+021 03 99991 15 004B 5919 E 20150420203501000 18 25 0439393+580002 55 S 99991 15 004B 5919 E 20150420203550000 18 25 0244589+504795 55 S 99991 15 004B 5919 E 20150420203622000 18 25 0210050+455949 55 S All translated into IOD and sorted by obs time are: 99999 15 004B 2420 G 20150416203823700 17 14 1659370+334007 57 99999 15 004B 2420 G 20150416203906920 17 14 1811020+410941 57 99999 15 004B 2420 G 20150416221116280 17 14 0859440+280553 57 99999 15 004B 2420 G 20150416221221250 17 14 0541440+520248 57 99999 15 004B 2420 G 20150418212158310 17 14 1414130+202108 57 99999 15 004B 2420 G 20150418212246080 17 14 1523450+460835 57 99999 15 004B 5919 E 20150420203254000 18 25 1053601+092987 55 S 99999 15 004B 5919 E 20150420203317500 18 25 1026769+201822 55 S+021 03 99999 15 004B 5919 E 20150420203501000 18 25 0439393+580002 55 S 99999 15 004B 5919 E 20150420203550000 18 25 0244589+504795 55 S 99999 15 004B 5919 E 20150420203622000 18 25 0210050+455949 55 S 99999 15 004B 2420 G 20150420220648470 17 14 1016140+175723 57 99999 15 004B 2420 G 20150420220712310 17 14 0933530+312413 57 Applying differential correction gives me: IGS 9 r 1 40382U 15004B 15110.91168043 0.00015539 00000-0 58385-3 0 05 2 40382 97.4835 183.9850 0013067 114.5486 245.7116 15.27131483 06 vs the estimation: IGS 9 rocket 426 X 518 km 1 71003U 15603A 15032.22709490 0.00070000 00000-0 00000+0 0 01 2 71003 97.4511 104.2022 0067098 145.2888 190.6828 15.29983957 09 I think this object is definetively the rocket of the IGS-9 launch (2015-004). More observations are needed for refine this orbit, but I think its pretty accurate. Anyway lets see what experts say. Jon. -- Jon, COSPAR 6242, 42.9453, -2.82839, 623m, Bitoriano, Basque Country. _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Tue Apr 21 2015 - 09:41:07 UTC
This archive was generated by hypermail 2.3.0 : Tue Apr 21 2015 - 14:41:07 UTC