Ground track for UDA34A3 = UW8551D = WT1190F
The following is based on all 2015 data received as of 31 October. The uncertainty is itself uncertain, since leftover rocket bodies have non-gravitational forces that are not entirely predictable. But it should be good to within a dozen kilometers or so.
The speed is in km/s, relative to the nominal impact point. You'll notice the rather sudden decrease at about 6:19:00 UTC, as the object plows into the atmosphere. (In computing the object's trajectory from its observations, I had to figure out how much solar radiation pressure was pushing it around; that gives you the "AMR", or area/mass ratio. By a lucky coincidence, that's exactly the parameter that tells you how much the object will decelerate at a given altitude and velocity.)
However, that area/mass ratio is only roughly determined. It could easily be wrong by a factor of two. The drag follows standard formulae that involve a coefficient of drag, which is a function of an object's shape. I'm using Cd=0.47, the drag coefficient of a sphere. But the object probably has some other shape.
The following ephemeris also assumes the object will remain intact. In reality, the object will presumably break into bits and pieces about then, which will have a higher level of atmospheric drag. So they'll take a bit longer to flutter down, probably mostly as bits too small to notice. I'm rather hoping somebody on Sri Lanka points a video camera at the object, on a tripod, so that positions can be measured and the object's actual deceleration can be computed.
Date (UT) HH:MM:SS lon lat alt (km) svel ---- -- -- -------- -------- -------- ---------- ----- 2015 11 13 06:10:00 46.6890 +11.7199 2607.795 8.899 2015 11 13 06:10:10 47.1348 +11.6675 2551.844 8.928 2015 11 13 06:10:20 47.5866 +11.6135 2496.027 8.958 2015 11 13 06:10:30 48.0444 +11.5580 2440.352 8.989 2015 11 13 06:10:40 48.5084 +11.5009 2384.824 9.019 2015 11 13 06:10:50 48.9786 +11.4422 2329.449 9.050 2015 11 13 06:11:00 49.4551 +11.3818 2274.233 9.080 2015 11 13 06:11:10 49.9380 +11.3197 2219.183 9.112 2015 11 13 06:11:20 50.4275 +11.2559 2164.305 9.143 2015 11 13 06:11:30 50.9236 +11.1903 2109.607 9.174 2015 11 13 06:11:40 51.4264 +11.1229 2055.095 9.206 2015 11 13 06:11:50 51.9360 +11.0536 2000.777 9.238 2015 11 13 06:12:00 52.4525 +10.9823 1946.660 9.270 2015 11 13 06:12:10 52.9761 +10.9092 1892.751 9.302 2015 11 13 06:12:20 53.5067 +10.8339 1839.059 9.335 2015 11 13 06:12:30 54.0446 +10.7567 1785.593 9.367 2015 11 13 06:12:40 54.5899 +10.6773 1732.359 9.400 2015 11 13 06:12:50 55.1425 +10.5957 1679.367 9.433 2015 11 13 06:13:00 55.7027 +10.5119 1626.625 9.466 2015 11 13 06:13:10 56.2705 +10.4259 1574.143 9.500 2015 11 13 06:13:20 56.8460 +10.3375 1521.931 9.533 2015 11 13 06:13:30 57.4294 +10.2468 1469.997 9.567 2015 11 13 06:13:40 58.0207 +10.1536 1418.351 9.601 2015 11 13 06:13:50 58.6201 +10.0580 1367.004 9.635 2015 11 13 06:14:00 59.2276 +09.9598 1315.966 9.669 2015 11 13 06:14:10 59.8434 +09.8591 1265.247 9.703 2015 11 13 06:14:20 60.4675 +09.7557 1214.859 9.738 2015 11 13 06:14:30 61.1001 +09.6496 1164.813 9.772 2015 11 13 06:14:40 61.7412 +09.5408 1115.120 9.807 2015 11 13 06:14:50 62.3909 +09.4291 1065.792 9.842 2015 11 13 06:15:00 63.0494 +09.3146 1016.841 9.877 2015 11 13 06:15:10 63.7167 +09.1972 968.279 9.912 2015 11 13 06:15:20 64.3929 +09.0768 920.120 9.947 2015 11 13 06:15:30 65.0782 +08.9533 872.375 9.982 2015 11 13 06:15:40 65.7725 +08.8268 825.059 10.02 2015 11 13 06:15:50 66.4760 +08.6972 778.185 10.05 2015 11 13 06:16:00 67.1887 +08.5644 731.767 10.09 2015 11 13 06:16:10 67.9108 +08.4283 685.818 10.12 2015 11 13 06:16:20 68.6423 +08.2890 640.354 10.16 2015 11 13 06:16:30 69.3833 +08.1464 595.388 10.19 2015 11 13 06:16:40 70.1338 +08.0003 550.937 10.23 2015 11 13 06:16:50 70.8939 +07.8509 507.015 10.26 2015 11 13 06:17:00 71.6636 +07.6980 463.637 10.30 2015 11 13 06:17:10 72.4430 +07.5416 420.820 10.33 2015 11 13 06:17:20 73.2322 +07.3817 378.580 10.37 2015 11 13 06:17:30 74.0311 +07.2182 336.933 10.40 2015 11 13 06:17:40 74.8399 +07.0511 295.896 10.44 2015 11 13 06:17:50 75.6584 +06.8804 255.485 10.47 2015 11 13 06:18:00 76.4868 +06.7061 215.718 10.51 2015 11 13 06:18:10 77.3251 +06.5281 176.611 10.54 2015 11 13 06:18:20 78.1731 +06.3464 138.183 10.57 2015 11 13 06:18:30 79.0310 +06.1610 100.450 10.61 2015 11 13 06:18:40 79.8970 +05.9723 63.503 10.52 2015 11 13 06:18:50 80.6357 +05.8084 32.756 5.479 2015 11 13 06:19:00 80.8375 +05.7551 23.897 1.005 2015 11 13 06:19:10 80.8843 +05.7340 20.992 0.427 2015 11 13 06:19:20 80.9032 +05.7187 18.899 0.286 2015 11 13 06:19:30 80.9120 +05.7055 16.981 0.240 2015 11 13 06:19:40 80.9156 +05.6934 15.166 0.217 2015 11 13 06:19:50 80.9165 +05.6819 13.485 0.202 2015 11 13 06:20:00 80.9160 +05.6707 11.953 0.189 2015 11 13 06:20:10 80.9148 +05.6596 10.559 0.179 2015 11 13 06:20:20 80.9134 +05.6486 9.278 0.172 2015 11 13 06:20:30 80.9119 +05.6377 8.077 0.168 2015 11 13 06:20:40 80.9104 +05.6267 6.935 0.164 2015 11 13 06:20:50 80.9089 +05.6158 5.844 0.161 2015 11 13 06:21:00 80.9073 +05.6048 4.800 0.158 2015 11 13 06:21:10 80.9058 +05.5939 3.796 0.155 2015 11 13 06:21:20 80.9043 +05.5830 2.830 0.153 2015 11 13 06:21:30 80.9027 +05.5721 1.899 0.151 2015 11 13 06:21:40 80.9012 +05.5612 0.998 0.149 2015 11 13 06:21:50 80.8997 +05.5503 0.126 0.147