"Pseudo-MPEC" for S512009 = ZTF0D86
Created 2020 Apr 4 13:23:36 UT using Find_Orb
Click here for an explanation of pseudo-MPECs
TLEs are available for this object, and for some of the other objects on these pages.
This object was first found on 2020 February 7 as ZTF0D86, and removed five days later as "was not confirmed". However, it seemed reasonably likely (though not certain) to be space junk to me, and I put it on my list as something we might see again.
Almost two months later, on 2020 April 4, Cristóvão Jacques found an artsat with suspiciously similar orbital elements, which he designated as S512009. Fortunately, he tracked it for about 2.5 hours, long enough to reduce the uncertainty to the point where getting an orbit linking it to ZTF0D86 was unusually simple. (With less data, finding a linkage between two arcs months apart can be quite a bit of work.)
Armed with a much better orbit, I then did a search for possible instances of this object from January 2019 to the present, without success. However, now that we have decent elements for it, we should be able to recover it in the future.
Astrometry: ZTF0D86* C2020 02 07.45927112 10 06.30 -01 20 03.2 ~281q 13.38gUNEOCPI41 ZTF0D86 C2020 02 07.45961812 10 12.84 -01 19 29.6 ~281q 13.38gUNEOCPI41 ZTF0D86 C2020 02 07.50731512 25 36.03 -00 02 19.1 ~281q 12.74RUNEOCPI41 ZTF0D86 C2020 02 07.50766212 25 42.79 -00 01 46.3 ~281q 12.74RUNEOCPI41 S512009*tC2020 04 04.14758 13 53 33.72 +10 53 46.3 ~44DB 13.2 RqNEOCPY00 S512009 tC2020 04 04.14865 13 54 00.30 +10 55 53.9 ~44DB 13.3 RqNEOCPY00 S512009 tC2020 04 04.22096 14 27 49.47 +13 28 22.2 ~44DB 12.8 RqNEOCPY00 S512009 tC2020 04 04.22172 14 28 14.03 +13 30 05.2 ~44DB 12.1 RqNEOCPY00 S512009 tC2020 04 04.22206 14 28 24.93 +13 30 51.1 ~44DB 12.6 RqNEOCPY00 S512009 tC2020 04 04.22235 14 28 34.29 +13 31 30.2 ~44DB 13.4 RqNEOCPY00 S512009 tC2020 04 04.22290 14 28 52.00 +13 32 44.4 ~44DB 13.9 RqNEOCPY00 S512009 tC2020 04 04.22321 14 29 02.23 +13 33 27.3 ~44DB 13.2 RqNEOCPY00 S512009 tC2020 04 04.22408 14 29 30.46 +13 35 25.3 ~44DB 12.8 RqNEOCPY00 S512009 C2020 04 04.22435 14 29 39.41 +13 36 02.6 ~44DB 12.1 RqNEOCPY00 S512009 C2020 04 04.22457 14 29 46.44 +13 36 31.4 ~44DB 11.6 RqNEOCPY00 S512009 C2020 04 04.22478 14 29 53.32 +13 37 00.5 ~44DB 12.4 RqNEOCPY00 S512009 C2020 04 04.22501 14 30 00.98 +13 37 32.2 ~44DB 11.5 RqNEOCPY00 S512009 tC2020 04 04.24553 14 41 45.71 +14 25 12.4 ~44DB 12.2 RqNEOCPY00 S512009 tC2020 04 04.24604 14 42 03.94 +14 26 24.2 ~44DB 12.3 RqNEOCPY00 S512009 tC2020 04 04.24636 14 42 15.61 +14 27 10.3 ~44DB 12.4 RqNEOCPY00 S512009 tC2020 04 04.24690 14 42 35.25 +14 28 27.6 ~44DB 11.7 RqNEOCPY00 S512009 tC2020 04 04.24717 14 42 45.17 +14 29 06.8 ~44DB 13.8 RqNEOCPY00 S512009 tC2020 04 04.24753 14 42 57.94 +14 29 56.9 ~44DB 13.6 RqNEOCPY00 S512009 tC2020 04 04.24787 14 43 10.49 +14 30 46.5 ~44DB 13.1 RqNEOCPY00 S512009 tC2020 04 04.24816 14 43 21.00 +14 31 28.2 ~44DB 12.7 RqNEOCPY00 S512009 tC2020 04 04.24981 14 44 21.92 +14 35 26.1 ~44DB 12.2 RqNEOCPY00 Station data: (I41) Palomar Mountain--ZTF (N33.357340 W116.859780) US/California. 1.2-m f/2.44 Oschin Schmidt + CCD. (Y00) SONEAR Observatory, Oliveira (S20.715082 W44.784960) Brazil. Observers C. Jacques, E. Pimentel, J. Barros. Measurer C. Jacques. 0.28-m f/2.2 astrograph + CCD. Orbital elements: S512009 = ZTF0D86 Perigee 2020 Apr 4.484165 +/- 3.02e-5 TT = 11:37:11 (JD 2458943.984165) Epoch 2020 Apr 4.0 TT = JDT 2458943.5 Find_Orb M 196.4224885691 +/- 0.010 (J2000 equator) n 337.8548440163 +/- 5.31e-5 Peri. 192.2505193 +/- 0.0034 a 44067.330172 +/- 0.00462 Node 174.3257549 +/- 0.00010 e 0.607894150 +/- 2.52e-5 Incl. 14.1821059 +/- 0.00031 P1534.36m/1.066d H 29.0 G 0.15 U 6.2 q 17279.057926 +/- 1.11 Q 70855.602419 +/- 1.11 From 26 observations 2020 Feb. 7-Apr. 4; mean residual 1".259
Residuals in arcseconds: 200207 I41 1.05+ .480+ 200404 Y00 .880- .332- 200404 Y00 1.41- .509- 200207 I41 1.13- .267- 200404 Y00 2.10- .674- 200404 Y00 .362- .155- 200207 I41 .167+ .049- 200404 Y00 .543+ .173+ 200404 Y00 5.7m+ .132- 200207 I41 .273- .308- 200404 Y00 .124- 6.8m+ 200404 Y00 1.34+ .392+ 200404 Y00 3.41+ 1.18+ 200404 Y00 2.09+ .590+ 200404 Y00 3.82- 1.12- 200404 Y00 2.61+ 1.12+ 200404 Y00 .042- .543- 200404 Y00 1.88- .270- 200404 Y00 1.53- .327- 200404 Y00 .293+ .028- 200404 Y00 3.37- .260- 200404 Y00 .117+ .053- 200404 Y00 2.37+ .349+ 200404 Y00 .172+ .151+ 200404 Y00 .813- .162- 200404 Y00 1.70+ .525+Residuals in seconds along-track, arcseconds across-track: 200207 I41 +.32s .116- 200404 Y00 -.17s .076+ 200404 Y00 -.24s .121+ 200207 I41 -.33s .114- 200404 Y00 -.39s .067+ 200404 Y00 -62ms .055+ 200207 I41 +40ms .098+ 200404 Y00 +.10s .017- 200404 Y00 -05ms .129+ 200207 I41 -.10s .208+ 200404 Y00 -21ms .041- 200404 Y00 +.22s .027- 200404 Y00 +.81s .064- 200404 Y00 +.38s 9.1m+ 200404 Y00 -.63s .080+ 200404 Y00 +.63s .255- 200404 Y00 -33ms .510+ 200404 Y00 -.30s .229- 200404 Y00 -.28s .109- 200404 Y00 +48ms .108+ 200404 Y00 -.52s .629- 200404 Y00 +17ms .083+ 200404 Y00 +.41s .316+ 200404 Y00 +32ms .101- 200404 Y00 -.15s .069- 200404 Y00 +.28s .060- Ephemerides (geocentric): Date (UTC) HH RA Dec delta r elong mag LuElo " sig PA ---- -------- -------------- ----------- ----- ------ ----- --- ----- -------- 2020 04 04 00 12 44 52.636 +04 12 12.32 70416 1.0006 169.9 13.0 51.7 .144 24 2020 04 04 01 13 02 12.328 +05 13 51.26 69354 1.0006 168.8 13.0 54.8 .526 55 2020 04 04 02 13 20 18.022 +06 16 07.04 67649 1.0006 166.3 13.1 58.1 .707 53 2020 04 04 03 13 39 36.031 +07 19 41.90 65277 1.0006 162.6 13.1 61.8 .637 42 2020 04 04 04 14 00 41.204 +08 25 18.08 62207 1.0006 158.1 13.2 65.9 .469 168 2020 04 04 05 14 24 23.233 +09 33 34.59 58398 1.0005 152.7 13.2 70.6 1.24 107 2020 04 04 06 14 51 58.430 +10 44 54.74 53794 1.0005 146.3 13.2 76.2 3.19 93 2020 04 04 07 15 25 33.884 +11 58 44.28 48325 1.0004 138.4 13.2 83.2 6.82 89 2020 04 04 08 16 09 02.446 +13 11 07.47 41917 1.0004 128.1 13.2 92.4 13.7 89 2020 04 04 09 17 10 23.570 +14 05 34.43 34532 1.0003 113.5 13.2 105.5 28.2 90 2020 04 04 10 18 48 18.919 +13 32 11.03 26379 1.0002 90.2 13.4 126.2 63.1 95 2020 04 04 11 21 45 51.954 +06 44 13.84 19025 1.0002 46.9 15?? 155.9 149 103 2020 04 04 12 02 15 43.355 -09 09 06.91 18084 1.0002 25.1 18?? 115.3 188 101 2020 04 04 13 05 39 55.188 -14 10 44.15 24740 1.0002 73.4 14.1 69.9 106 89 2020 04 04 14 07 29 10.469 -12 34 36.43 32949 1.0003 99.5 13.5 46.7 58.8 82 2020 04 04 15 08 34 33.631 -10 14 32.66 40521 1.0004 115.4 13.5 34.0 36.9 79 2020 04 04 16 09 19 38.253 -08 07 13.78 47125 1.0005 126.4 13.5 26.6 25.0 76 2020 04 04 17 09 53 55.393 -06 16 39.13 52776 1.0006 134.8 13.5 22.7 17.7 75 2020 04 04 18 10 21 49.466 -04 39 45.11 57548 1.0006 141.7 13.5 21.2 12.8 74 2020 04 04 19 10 45 39.975 -03 13 14.76 61512 1.0007 147.4 13.5 21.3 9.35 73 2020 04 04 20 11 06 48.671 -01 54 31.84 64726 1.0007 152.4 13.4 22.5 6.77 73 2020 04 04 21 11 26 07.824 -00 41 37.73 67235 1.0008 156.9 13.4 24.4 4.78 73 2020 04 04 22 11 44 13.574 +00 26 58.59 69073 1.0008 160.9 13.3 26.6 3.22 72 2020 04 04 23 12 01 32.893 +01 32 29.00 70263 1.0008 164.3 13.2 29.1 1.98 73 2020 04 05 00 12 18 27.603 +02 35 52.48 70820 1.0009 167.1 13.2 31.7 1.01 75 2020 04 05 01 12 35 16.969 +03 37 59.67 70751 1.0009 168.9 13.1 34.6 .275 90 2020 04 05 02 12 52 19.657 +04 39 36.10 70054 1.0009 169.2 13.1 37.7 .296 47 2020 04 05 03 13 09 55.545 +05 41 24.70 68721 1.0009 167.8 13.1 40.9 .604 54 2020 04 05 04 13 28 27.805 +06 44 07.62 66736 1.0009 165.0 13.1 44.6 .681 50 2020 04 05 05 13 48 25.786 +07 48 27.11 64073 1.0009 161.1 13.1 48.6 .520 26 2020 04 05 06 14 10 29.608 +08 55 04.64 60696 1.0008 156.4 13.2 53.1 .656 130 2020 04 05 07 14 35 38.287 +10 04 34.87 56557 1.0008 150.7 13.2 58.4 1.94 98 2020 04 05 08 15 05 25.506 +11 17 04.70 51594 1.0008 143.8 13.2 64.9 4.50 91 2020 04 05 09 15 42 33.364 +12 31 03.17 45736 1.0007 135.1 13.2 73.1 9.24 88 2020 04 05 10 16 32 13.073 +13 39 11.12 38911 1.0007 123.3 13.1 84.2 18.6 89 2020 04 05 11 17 45 41.962 +14 11 18.69 31139 1.0006 105.9 13.2 100.9 39.2 92 2020 04 05 12 19 50 22.002 +11 56 25.41 22953 1.0005 76.1 13.8 129.5 91.8 98 2020 04 05 13 23 35 33.634 +00 06 12.47 17425 1.0004 21.6 19?? 163.4 190 104 2020 04 05 14 03 57 40.552 -12 55 20.23 20378 1.0005 48.4 15?? 106.0 153 96 2020 04 05 15 06 34 34.573 -13 45 51.34 28233 1.0006 85.6 13.8 69.6 81.2 86 2020 04 05 16 08 00 43.367 -11 34 28.32 36272 1.0007 106.3 13.5 49.8 47.7 81 2020 04 05 17 08 55 44.157 -09 17 41.13 43444 1.0007 119.7 13.5 37.3 31.0 78 2020 04 05 18 09 35 27.637 -07 17 29.89 49637 1.0008 129.4 13.5 28.6 21.5 76 2020 04 05 19 10 06 38.650 -05 33 01.52 54907 1.0009 137.0 13.5 22.1 15.4 75 2020 04 05 20 10 32 35.901 -04 00 48.77 59330 1.0010 143.3 13.5 17.2 11.2 74 2020 04 05 21 10 55 09.286 -02 37 49.89 62970 1.0010 148.7 13.5 13.7 8.19 73 2020 04 05 22 11 15 25.733 -01 21 45.23 65881 1.0011 153.4 13.4 11.7 5.89 73 2020 04 05 23 11 34 09.501 -00 10 48.78 68103 1.0011 157.6 13.4 11.4 4.10 72 2020 04 06 00 11 51 52.193 +00 56 21.63 69664 1.0011 161.4 13.3 12.4 2.68 73 2020 04 06 01 12 08 58.195 +02 00 51.85 70585 1.0012 164.6 13.2 14.5 1.56 73 2020 04 06 02 12 25 47.964 +03 03 36.92 70877 1.0012 167.1 13.2 17.1 .694 77 2020 04 06 03 12 42 40.272 +04 05 24.94 70543 1.0012 168.5 13.1 20.2 .107 141 2020 04 06 04 12 59 54.056 +05 07 00.06 69579 1.0012 168.4 13.1 23.5 .426 52 2020 04 06 05 13 17 50.283 +06 09 04.63 67973 1.0012 166.7 13.1 27.1 .640 53 2020 04 06 06 13 36 54.292 +07 12 20.70 65705 1.0012 163.6 13.1 31.2 .611 42 2020 04 06 07 13 57 39.249 +08 17 30.34 62746 1.0012 159.6 13.1 35.6 .450 174 2020 04 06 08 14 20 51.921 +09 25 13.13 59053 1.0011 154.6 13.2 40.8 1.10 109 2020 04 06 09 14 47 43.297 +10 35 55.80 54575 1.0011 148.5 13.2 46.8 2.88 94 2020 04 06 10 15 20 10.036 +11 49 17.32 49244 1.0011 141.0 13.2 54.2 6.19 89 2020 04 06 11 16 01 42.495 +13 02 10.38 42985 1.0010 131.3 13.1 63.8 12.4 88 2020 04 06 12 16 59 25.499 +14 01 16.27 35745 1.0009 117.6 13.1 77.2 25.2 90 2020 04 06 13 18 29 35.471 +13 50 51.69 27663 1.0009 96.3 13.3 98.5 55.5 94 2020 04 06 14 21 11 01.344 +08 33 53.03 19928 1.0008 57.3 14?? 137.6 133 102 2020 04 06 15 01 34 19.055 -07 03 43.87 17567 1.0008 15.8 22?? 154.7 197 102 2020 04 06 16 05 16 49.906 -14 08 42.99 23490 1.0008 66.3 14.4 100.6 117 91 2020 04 06 17 07 16 48.453 -12 55 06.58 31700 1.0009 94.8 13.6 72.0 64.0 83 2020 04 06 18 08 26 49.277 -10 34 17.14 39416 1.0010 111.7 13.5 55.3 39.5 79 2020 04 06 19 09 14 10.363 -08 23 48.13 46175 1.0011 123.2 13.5 43.9 26.5 77 2020 04 06 20 09 49 43.668 -06 30 29.00 51970 1.0012 131.9 13.5 35.4 18.7 75 2020 04 06 21 10 18 24.212 -04 51 29.98 56874 1.0012 138.9 13.5 28.6 13.5 74 2020 04 06 22 10 42 44.749 -03 23 26.82 60960 1.0013 144.7 13.5 22.9 9.87 73 2020 04 06 23 11 04 13.461 -02 03 35.27 64287 1.0013 149.8 13.5 17.8 7.17 73 2020 04 07 00 11 23 46.014 -00 49 50.75 66904 1.0014 154.3 13.5 13.3 5.10 73 2020 04 07 01 11 42 00.438 +00 19 21.85 68844 1.0014 158.3 13.4 9.1 3.48 72 2020 04 07 02 11 59 24.779 +01 25 17.15 70134 1.0014 161.8 13.3 5.1 2.20 73 2020 04 07 03 12 16 21.436 +02 28 55.95 70788 1.0015 164.8 13.2 1.3 1.19 74 2020 04 07 04 12 33 09.906 +03 31 09.94 70816 1.0015 167.0 13.2 2.7 .424 83 2020 04 07 05 12 50 08.809 +04 32 45.23 70217 1.0015 168.0 13.1 6.5 .188 32 2020 04 07 06 13 07 37.686 +05 34 24.92 68985 1.0015 167.5 13.1 10.5 .515 52 2020 04 07 07 13 25 59.006 +06 36 50.97 67103 1.0015 165.5 13.1 14.7 .628 49 2020 04 07 08 13 45 40.877 +07 40 45.33 64548 1.0015 162.2 13.1 19.2 .507 27 2020 04 07 09 14 07 21.281 +08 46 49.33 61286 1.0015 158.0 13.1 24.2 .595 134 2020 04 07 10 14 31 55.441 +09 55 38.78 57271 1.0014 152.6 13.2 29.9 1.75 100 2020 04 07 11 15 00 49.934 +11 07 26.48 52443 1.0014 146.1 13.2 36.6 4.09 91 2020 04 07 12 15 36 32.378 +12 21 04.06 46731 1.0013 137.8 13.1 44.9 8.39 89 2020 04 07 13 16 23 41.139 +13 30 38.03 40062 1.0013 126.8 13.1 55.9 16.7 89 2020 04 07 14 17 32 09.521 +14 11 58.16 32426 1.0012 110.7 13.1 72.0 34.8 91 2020 04 07 15 19 25 42.285 +12 41 10.28 24208 1.0011 83.8 13.5 99.1 80.1 97 2020 04 07 16 22 53 02.013 +02 45 30.67 17832 1.0011 33.5 17?? 150.5 178 104 2020 04 07 17 03 22 55.210 -11 54 46.34 19380 1.0011 38.8 16?? 140.8 168 98 2020 04 07 18 06 16 40.322 -13 59 24.98 26918 1.0012 79.7 13.9 99.2 89.6 87 2020 04 07 19 07 50 27.688 -11 55 23.48 35050 1.0012 102.1 13.6 76.9 51.6 81 2020 04 07 20 08 48 56.572 -09 36 02.60 42377 1.0013 116.2 13.5 63.0 33.1 78 2020 04 07 21 09 30 28.900 -07 32 45.29 48723 1.0014 126.3 13.6 53.1 22.8 76 2020 04 07 22 10 02 43.556 -05 45 48.64 54135 1.0015 134.1 13.6 45.6 16.3 75 2020 04 07 23 10 29 20.942 -04 11 45.18 58686 1.0015 140.5 13.6 39.4 11.9 74 2020 04 08 00 10 52 20.870 -02 47 24.67 62446 1.0016 146.0 13.5 34.2 8.66 73 2020 04 08 01 11 12 55.282 -01 30 20.22 65469 1.0017 150.8 13.5 29.7 6.26 73 2020 04 08 02 11 31 51.164 -00 18 40.60 67797 1.0017 155.1 13.5 25.6 4.40 73 2020 04 08 03 11 49 41.667 +00 48 59.86 69461 1.0017 158.8 13.4 22.0 2.93 73