"Pseudo-MPEC" for XW99CEC = XV902A4
Created 2016 Nov 19 19:13:55 UT using Find_Orb
Note: Further analysis from later observations makes me reasonably sure that these were early observations of Multijunk, a piece of junk which gets its name because it's been seen many times and given many designations. Original analysis from when the object was found follows.
Further data from (H01) Magdalena Ridge and from (G96) Mt. Lemmon made it very clear that this object is in a two-day orbit and made four orbits between the first and second sets of observations. The link between those arcs is quite rough. Either the object is very light (like a piece of Mylar) and has some really serious non-gravs, or it's an active satellite.
The latter is a little difficult to believe. Not much is in two-day orbits. The main candidates are XMM-Newton (1999-066) and Vela 4a (1967-040). Except that it's not either of those objects, nor a catalogued piece of those objects. It's unlikely that uncatalogued bits would still be maneuvering. So a light bit of trash from one of those launches seems like the best candidate to me.
For customized ephemerides, cut-and-paste the 2016 November 19 observations shown below (you can leave out the November 11 arc) and put them into the big text box in the on-line version of Find_Orb, and set up your observatory code, time span, and so on.
Astrometry:
XV902A4 C2016 11 11.38964 04 28 16.69 +10 49 46.9 x19.3 VqNEOCPG96
XV902A4 C2016 11 11.39397 04 28 43.37 +10 52 03.2 x18.7 VqNEOCPG96
XV902A4 C2016 11 11.39825 04 29 09.79 +10 54 16.1 x18.3 VqNEOCPG96
XV902A4 C2016 11 11.40277 04 29 37.64 +10 56 33.5 x18.3 VqNEOCPG96
XV902A4 C2016 11 11.44967 04 34 57.96 +11 19 44.5 x G96
XV902A4 C2016 11 11.44991 04 34 59.85 +11 19 51.8 x18.1 V G96
XV902A4 C2016 11 11.45015 04 35 01.55 +11 19 58.3 x G96
XV902A4 C2016 11 11.45039 04 35 03.37 +11 20 05.1 x18.4 V G96
XW99CEC C2016 11 19.43356 03 54 56.57 +09 05 53.2 18.1 V D0552G96
XW99CEC C2016 11 19.43372 03 54 57.37 +09 05 57.1 18.2 V D0552G96
XW99CEC C2016 11 19.43388 03 54 58.13 +09 06 01.1 18.3 V D0552G96
XW99CEC C2016 11 19.43405 03 54 58.97 +09 06 04.7 18.2 V D0552G96
XW99CEC C2016 11 19.45396 03 56 40.74 +09 13 52.1 18.0 V D0552G96
XW99CEC C2016 11 19.45414 03 56 41.72 +09 13 56.3 18.1 V D0552G96
XW99CEC C2016 11 19.45431 03 56 42.58 +09 14 00.2 18.2 V D0552G96
XW99CEC C2016 11 19.45956803 56 57.82 +09 10 25.0 17.8 V D0552H01
XW99CEC C2016 11 19.46247103 57 14.19 +09 11 29.9 18.1 V D0552H01
XW99CEC C2016 11 19.46902603 57 51.81 +09 13 54.9 17.7 V D0552H01
XW99CEC C2016 11 19.47892 03 58 58.59 +09 23 08.9 18.1 V D0552G96
XW99CEC C2016 11 19.47908 03 58 59.55 +09 23 12.5 18.1 V D0552G96
XW99CEC C2016 11 19.47925 03 59 00.48 +09 23 16.1 18.0 V D0552G96
XW99CEC C2016 11 19.47941 03 59 01.38 +09 23 19.7 18.1 V D0552G96
XW99CEC KC2016 11 19.47953 03 59 03.64 +09 25 02.2 18.3 R D0552291
XW99CEC C2016 11 19.47993303 58 56.27 +09 17 52.4 17.8 V D0552H01
XW99CEC KC2016 11 19.48010 03 59 06.90 +09 25 14.7 18.3 R D0552291
XW99CEC KC2016 11 19.48070 03 59 10.38 +09 25 28.0 18.2 R D0552291
XW99CEC C2016 11 19.49818 04 00 53.43 +09 29 58.7 D0552G96
XW99CEC C2016 11 19.49834 04 00 54.48 +09 30 02.2 18.2 V D0552G96
XW99CEC C2016 11 19.49851 04 00 55.48 +09 30 05.8 18.1 V D0552G96
XW99CEC C2016 11 19.49870 04 00 56.73 +09 30 09.9 18.3 V D0552G96
Station data:
(291) LPL/Spacewatch II (N31.961626 W111.599100) US/Arizona. 1.8-m f/2.7
reflector + CCD.
(G96) Mt. Lemmon Survey (N32.442751 W110.788720) US/Arizona. Observers E.
J. Christensen, A. R. Gibbs, A. D. Grauer, R. E. Hill, J. A. Johnson, R. A.
Kowalski, S. M. Larson, F. C. Shelly. 1.5-m reflector + CCD.
(H01) Magdalena Ridge Observatory, Socorro (N33.985148 W107.189200) US/New Mexico.
Observers W. H. Ryan, E. V. Ryan. Measurer W. H. Ryan. 2.4-m f/8.9
reflector + CCD.
Orbital elements: XV902A4
Perigee 2016 Nov 18.323245 +/- 0.00669 TT = 7:45:28 (JD 2457710.823245)
Epoch 2016 Nov 19.0 TT = JDT 2457711.5 Find_Orb
M 116.874202 +/- 0.9 (J2000 equatorial)
n 172.697909557 +/- 0.301 Peri. 213.327817 +/- 0.12
a 68930.60957 +/- 80.1 Node 26.376258 +/- 0.044
e 0.80239288 +/- 0.000305 Incl. 18.052713 +/- 0.0031
P3001.72m/2.085d H 33.0 G 0.15 U 11.9
q 13621.17907 +/- 36 Q 124240.0400 +/- 126
22 of 30 observations 2016 Nov. 19 (93.8 min); mean residual 0".290
Residuals in arcseconds: 161111 G96(9720- 2473-) 161119 G96 .251- .203+ 161119 G96 .030- .156- 161111 G96(9657- 2454-) 161119 G96 .249- .282- 161119 G96 .384- .026- 161111 G96(9598- 2437-) 161119 G96 .091- .193- 161119 291 .497- .129- 161111 G96(9539- 2420-) 161119 G96 .326+ .120- 161119 H01 .405+ .118+ 161111 G96(8738- 2197-) 161119 G96 .258- .117- 161119 291 .582- 6.7m+ 161111 G96(8732- 2195-) 161119 H01 .247+ .125+ 161119 291 .060- .307+ 161111 G96(8729- 2194-) 161119 H01 3.5m+ .083+ 161119 G96 .460- .254- 161111 G96(8723- 2193-) 161119 H01 .291+ .104- 161119 G96 .471+ .092- 161119 G96 .040+ 4.2m- 161119 G96 .177+ .196- 161119 G96 .259- .039- 161119 G96 .194+ .049+ 161119 G96 .726+ .068- 161119 G96 .871+ .099+ Ephemerides (geocentric): Date (UTC) HH RA Dec delta r elong mag " sig PA ---- -- -- -- ------------ ------------ ------ ------ ----- --- ---- --- 2016 11 19 19 04 51 55.655 +13 19 38.63 109641 .98878 162.0 18.3 108 75 2016 11 19 20 04 58 57.475 +13 41 37.37 106516 .98875 160.6 18.2 142 75 2016 11 19 21 05 06 27.731 +14 04 11.41 103041 .98871 159.0 18.2 184 76 2016 11 19 22 05 14 32.829 +14 27 27.11 99195 .98867 157.3 18.2 235 77 2016 11 19 23 05 23 21.096 +14 51 31.15 94954 .98863 155.4 18.2 299 78 2016 11 20 00 05 33 03.647 +15 16 30.21 90288 .98858 153.3 18.1 381 79 2016 11 20 01 05 43 55.776 +15 42 30.07 85160 .98853 150.9 18.1 485 80 2016 11 20 02 05 56 19.289 +16 09 33.50 79525 .98848 148.1 18.0 624 81 2016 11 20 03 06 10 46.670 +16 37 35.15 73325 .98842 144.8 17.9 814 82 2016 11 20 04 06 28 09.010 +17 06 08.74 66484 .98836 140.9 17.8 1085 83 2016 11 20 05 06 49 52.508 +17 33 52.56 58905 .98829 135.9 17.7 1500 85 2016 11 20 06 07 18 36.970 +17 56 44.61 50455 .98821 129.3 17.5 2191 87 2016 11 20 07 08 00 00.679 +18 01 45.19 40965 .98812 119.7 17.3 3513 91 2016 11 20 08 09 08 35.184 +16 57 37.29 30267 .98803 103.7 17.2 6668 96 2016 11 20 09 11 33 54.828 +10 02 57.91 18838 .98792 68.4 17.8 289' 105 2016 11 20 10 17 29 01.090 -15 06 24.58 14196 .98788 25.4 22?? 543' 100 2016 11 20 11 21 55 42.244 -15 22 06.09 23909 .98795 87.4 17.3 182' 81 2016 11 20 12 23 32 27.414 -10 08 15.46 35212 .98803 111.1 17.3 4514 75 2016 11 20 13 00 21 55.879 -06 37 47.87 45358 .98811 123.6 17.5 2383 74 2016 11 20 14 00 53 37.070 -04 10 57.24 54360 .98817 131.6 17.6 1421 73 2016 11 20 15 01 16 32.443 -02 20 57.81 62401 .98823 137.4 17.8 898 73 2016 11 20 16 01 34 24.097 -00 54 00.88 69636 .98828 141.8 17.9 577 74 2016 11 20 17 01 49 01.578 +00 17 30.34 76179 .98833 145.5 18.0 364 75 2016 11 20 18 02 01 25.991 +01 18 07.64 82118 .98837 148.5 18.0 214 77 2016 11 20 19 02 12 14.535 +02 10 43.47 87519 .98840 151.1 18.1 104 81 2016 11 20 20 02 21 51.392 +02 57 13.10 92434 .98843 153.4 18.2 24 108 2016 11 20 21 02 30 33.106 +03 38 56.87 96905 .98846 155.5 18.2 46 56 2016 11 20 22 02 38 31.471 +04 16 52.84 100965 .98849 157.3 18.2 96 65 2016 11 20 23 02 45 55.191 +04 51 44.17 104641 .98851 159.0 18.3 138 68 2016 11 21 00 02 52 50.877 +05 24 03.79 107956 .98853 160.5 18.3 172 69 2016 11 21 01 02 59 23.682 +05 54 17.38 110929 .98855 161.9 18.3 200 70 2016 11 21 02 03 05 37.718 +06 22 45.38 113574 .98856 163.1 18.3 223 71 2016 11 21 03 03 11 36.340 +06 49 44.31 115906 .98857 164.3 18.3 243 71 2016 11 21 04 03 17 22.334 +07 15 27.78 117935 .98858 165.4 18.3 260 72 2016 11 21 05 03 22 58.072 +07 40 07.15 119670 .98859 166.4 18.3 274 72 2016 11 21 06 03 28 25.603 +08 03 52.05 121118 .98859 167.2 18.3 286 73 2016 11 21 07 03 33 46.743 +08 26 50.76 122285 .98859 168.0 18.3 296 73 2016 11 21 08 03 39 03.128 +08 49 10.51 123176 .98859 168.6 18.3 304 73 2016 11 21 09 03 44 16.271 +09 10 57.69 123795 .98859 169.2 18.3 311 74 2016 11 21 10 03 49 27.598 +09 32 18.04 124143 .98859 169.5 18.3 316 74 2016 11 21 11 03 54 38.486 +09 53 16.79 124223 .98858 169.8 18.3 321 74 2016 11 21 12 03 59 50.299 +10 13 58.79 124034 .98857 169.9 18.3 324 75 2016 11 21 13 04 05 04.414 +10 34 28.59 123576 .98856 169.8 18.2 326 75 2016 11 21 14 04 10 22.260 +10 54 50.57 122846 .98855 169.5 18.2 327 76 2016 11 21 15 04 15 45.351 +11 15 08.97 121843 .98853 169.1 18.2 327 76 2016 11 21 16 04 21 15.326 +11 35 28.01 120562 .98851 168.6 18.2 326 76 2016 11 21 17 04 26 54.001 +11 55 51.92 118998 .98849 167.9 18.2 324 77 2016 11 21 18 04 32 43.420 +12 16 25.06 117144 .98847 167.1 18.2 321 77 2016 11 21 19 04 38 45.941 +12 37 11.94 114993 .98844 166.1 18.2 316 78 2016 11 21 20 04 45 04.326 +12 58 17.33 112535 .98842 165.0 18.2 310 78 2016 11 21 21 04 51 41.874 +13 19 46.33 109757 .98839 163.8 18.2 302 79 2016 11 21 22 04 58 42.608 +13 41 44.39 106647 .98835 162.5 18.2 293 79 2016 11 21 23 05 06 11.521 +14 04 17.43 103187 .98832 161.0 18.2 281 80 2016 11 22 00 05 14 14.952 +14 27 31.79 99356 .98828 159.3 18.1 266 81 2016 11 22 01 05 23 01.137 +14 51 34.17 95132 .98824 157.4 18.1 248 82 2016 11 22 02 05 32 41.051 +15 16 31.26 90484 .98819 155.4 18.1 224 83 2016 11 22 03 05 43 29.781 +15 42 28.92 85375 .98814 153.0 18.0 194 85 2016 11 22 04 05 55 48.805 +16 09 30.14 79761 .98809 150.2 17.9 155 87 2016 11 22 05 06 10 10.058 +16 37 30.07 73584 .98803 147.0 17.8 102 92 2016 11 22 06 06 27 23.654 +17 06 03.76 66769 .98797 143.1 17.7 30 119 2016 11 22 07 06 48 53.882 +17 33 53.01 59220 .98790 138.2 17.6 91 73 2016 11 22 08 07 17 16.363 +17 57 06.28 50806 .98782 131.7 17.5 276 83 2016 11 22 09 07 57 58.566 +18 03 21.24 41357 .98774 122.3 17.3 623 89 2016 11 22 10 09 04 56.749 +17 04 16.87 30702 .98764 106.6 17.1 1431 95 2016 11 22 11 11 25 15.694 +10 37 33.15 19246 .98753 72.6 17.6 4058 104 2016 11 22 12 17 13 18.589 -14 24 59.63 14016 .98748 20.0 23?? 7388 101 2016 11 22 13 21 50 26.391 -15 35 39.44 23464 .98754 84.1 17.4 1935 82 2016 11 22 14 23 30 18.464 -10 17 20.59 34805 .98762 108.5 17.3 416 79 2016 11 22 15 00 20 45.382 -06 43 27.77 45001 .98770 121.2 17.5 70 51 2016 11 22 16 00 52 52.061 -04 14 43.45 54045 .98776 129.3 17.7 276 67 2016 11 22 17 01 16 00.953 -02 23 36.09 62121 .98782 135.2 17.8 386 69 2016 11 22 18 01 34 00.698 -00 55 55.27 69385 .98787 139.7 17.9 452 69 2016 11 22 19 01 48 43.426 +00 16 06.10 75953 .98792 143.4 18.0 494 70 2016 11 22 20 02 01 11.433 +01 17 05.12 81915 .98796 146.5 18.1 524 70 2016 11 22 21 02 12 02.537 +02 09 57.17 87336 .98800 149.1 18.2 545 70 2016 11 22 22 02 21 41.269 +02 56 39.25 92270 .98803 151.4 18.2 561 71 2016 11 22 23 02 30 24.379 +03 38 32.82 96758 .98806 153.5 18.3 573 71 2016 11 23 00 02 38 23.796 +04 16 36.61 100834 .98808 155.4 18.3 583 71 2016 11 23 01 02 45 48.308 +04 51 34.29 104525 .98811 157.1 18.3 590 71 2016 11 23 02 02 52 44.586 +05 23 59.10 107854 .98813 158.7 18.3 597 72 2016 11 23 03 02 59 17.823 +05 54 16.99 110841 .98814 160.1 18.3 603 72 2016 11 23 04 03 05 32.163 +06 22 48.54 113500 .98816 161.5 18.4 608 72 2016 11 23 05 03 11 30.977 +06 49 50.42 115845 .98817 162.7 18.4 612 72 2016 11 23 06 03 17 17.071 +07 15 36.34 117886 .98818 163.9 18.4 616 73 2016 11 23 07 03 22 52.824 +07 40 17.72 119634 .98819 164.9 18.4 620 73 2016 11 23 08 03 28 20.296 +08 04 04.26 121094 .98819 165.9 18.3 623 73 2016 11 23 09 03 33 41.305 +08 27 04.29 122274 .98820 166.8 18.3 627 74 2016 11 23 10 03 38 57.493 +08 49 25.06 123177 .98820 167.6 18.3 630 74 2016 11 23 11 03 44 10.372 +09 11 12.99 123808 .98820 168.3 18.3 634 74 2016 11 23 12 03 49 21.368 +09 32 33.85 124169 .98819 168.9 18.3 637 74 2016 11 23 13 03 54 31.858 +09 53 32.87 124261 .98819 169.4 18.3 641 75 2016 11 23 14 03 59 43.200 +10 14 14.91 124085 .98818 169.8 18.3 645 75 2016 11 23 15 04 04 56.768 +10 34 44.55 123640 .98817 170.0 18.2 650 75 2016 11 23 16 04 10 13.984 +10 55 06.14 122924 .98816 170.0 18.2 655 76 2016 11 23 17 04 15 36.354 +11 15 23.95 121934 .98814 169.9 18.2 660 76 2016 11 23 18 04 21 05.506 +11 35 42.17 120667 .98813 169.5 18.2 666 76 2016 11 23 19 04 26 43.239 +11 56 05.04 119117 .98811 169.1 18.2 673 77 2016 11 23 20 04 32 31.582 +12 16 36.89 117278 .98808 168.4 18.2 681 77 2016 11 23 21 04 38 32.868 +12 37 22.25 115142 .98806 167.6 18.2 690 77 2016 11 23 22 04 44 49.829 +12 58 25.84 112700 .98803 166.7 18.2 700 78