"Pseudo-MPEC" for ZTF0Dip = ZTF0DkY = ZTF0DcD
Created 2020 Jul 26 14:14:40 UT using Find_Orb
Click here for an explanation of pseudo-MPECs
The linkage between ZTF0DkY = ZTF0Dip, from consecutive nights, is quite solid. I am almost certain of the linkage to ZTF0DcD four weeks earlier, enough so that but won't mind if more data comes through to confirm it. I'm confident enough to post a pseudo-MPEC for it, though, and to post TLEs for the combined orbit.
Since this is an ETBO, the predictions of its orbit should be considered approximate; solar radiation pressure will make it move in odd and unpredictable ways.
Astrometry:
ZTF0DcD* C2020 06 30.45936321 25 44.28 -16 25 30.2 ~6UJ4 16.87RUNEOCPI41
ZTF0DcD C2020 06 30.45971021 25 48.68 -16 24 44.7 ~6UJ4 16.87RUNEOCPI41
ZTF0DcD C2020 06 30.48018921 30 23.37 -15 37 38.3 ~6UJ4 UNEOCPI41
ZTF0DcD C2020 06 30.48053621 30 27.91 -15 36 51.9 ~6UJ4 UNEOCPI41
ZTF0Dip* C2020 07 25.35517421 35 58.17 -14 42 24.2 ~7PNq 16.27RUNEOCPI41
ZTF0Dip C2020 07 25.35552121 36 01.49 -14 41 45.3 ~7PNq 16.27RUNEOCPI41
ZTF0Dip C2020 07 25.37687521 39 29.23 -14 00 34.5 ~7PNq 16.76gUNEOCPI41
ZTF0Dip C2020 07 25.37722221 39 32.58 -13 59 53.9 ~7PNq 16.76gUNEOCPI41
ZTF0DkY* C2020 07 26.37621521 19 52.26 -16 19 04.4 ~7QCx 16.18RUNEOCPI41
ZTF0DkY C2020 07 26.37656321 19 55.54 -16 18 23.6 ~7QCx 16.18RUNEOCPI41
ZTF0DkY C2020 07 26.39798621 23 21.46 -15 36 02.7 ~7QCx 16.68gUNEOCPI41
ZTF0DkY C2020 07 26.39833321 23 24.87 -15 35 20.4 ~7QCx 16.68gUNEOCPI41
ZTF0DkY C2020 07 26.47141221 35 33.99 -13 04 18.9 ~7QCx 16.19RUNEOCPI41
ZTF0DkY C2020 07 26.47175921 35 37.66 -13 03 33.8 ~7QCx 16.19RUNEOCPI41
Station data:
(I41) Palomar Mountain--ZTF (N33.357340 W116.859780) US/California. 1.2-m
f/2.44 Oschin Schmidt + CCD.
Orbital elements: ZTF0Dip = ZTF0DkY = ZTF0DcD
Perigee 2020 Jul 24.7702403 +/- 0.000176 TT = 18:29:08.75 (JD 2459055.2702403)
A1: 9.21e-6 +/- 2.3e-8 A2: -1.81e-9 +/- 1.34e-8 A3: 1.8e-7 +/- 1.11e-8 AU/day^2 [1/r^2]
Epoch 2020 Jul 25.0 TT = JDT 2459055.5 Find_Orb
M 76.8536915821 +/- 0.059 (J2000 equator)
n 334.4958899280 +/- 0.00115 Peri. 153.2516325 +/- 0.015
a 44361.849996 +/- 0.101 Node 344.0881978 +/- 0.006
e 0.769399269 +/- 6.87e-5 Incl. 29.3026760 +/- 0.0032
P1549.77m/1.076d H 32.2 G 0.15 U 8.2
q 10229.875036 +/- 3.03 Q 78493.824956 +/- 3.14
From 14 observations 2020 June 30-July 26; mean residual 2".132
Residuals in arcseconds: 200630 I41 1.67+ 1.25+ 200725 I41 3.61- 3.36- 200726 I41 .265+ .499+ 200630 I41 .907- .053+ 200725 I41 1.93- 2.99- 200726 I41 1.25+ 1.23+ 200630 I41 1.44+ 1.23+ 200725 I41 2.36- 3.19- 200726 I41 2.28+ 3.31+ 200630 I41 1.34- 1.45- 200726 I41 1.56+ 1.30+ 200726 I41 2.46+ 3.87+ 200725 I41 2.80- 2.76- 200726 I41 .603+ 1.21+ Ephemerides (geocentric): Date (UTC) HH RA Dec delta r elong mag rvel svel " sig PA ---- -------- -------------- ----------- ----- ------ ----- --- ----- ---- -------- 2020 07 25 00 19 44 08.053 -22 39 23.48 59621 1.0162 171.5 15.9 1.535 2.094 23.2 91 2020 07 25 01 20 02 30.113 -21 06 31.71 64664 1.0162 176.0 Sha 1.272 1.829 12.9 101 2020 07 25 02 20 18 06.238 -19 40 08.13 68815 1.0162 179.9 Sha 1.038 1.613 6.50 125 2020 07 25 03 20 31 50.791 -18 18 27.99 72160 1.0162 176.6 Sha 0.823 1.437 4.63 179 2020 07 25 04 20 44 18.292 -17 00 03.74 74760 1.0163 173.4 16.3 0.624 1.296 6.48 36 2020 07 25 05 20 55 52.323 -15 43 41.50 76662 1.0163 170.4 16.5 0.434 1.190 8.74 50 2020 07 25 06 21 06 50.205 -14 28 16.01 77893 1.0163 167.5 16.6 0.251 1.119 10.6 58 2020 07 25 07 21 17 25.621 -13 12 46.05 78472 1.0162 164.7 16.7 0.071 1.085 11.8 62 2020 07 25 08 21 27 50.263 -11 56 10.34 78407 1.0162 161.9 16.8 -0.107 1.088 12.6 66 2020 07 25 09 21 38 15.014 -10 37 23.17 77698 1.0162 159.0 16.9 -0.287 1.130 12.9 70 2020 07 25 10 21 48 50.975 -09 15 09.26 76334 1.0162 156.1 16.9 -0.472 1.208 12.6 74 2020 07 25 11 21 59 50.564 -07 47 56.78 74294 1.0162 153.1 17.0 -0.663 1.321 11.7 80 2020 07 25 12 22 11 28.968 -06 13 46.86 71547 1.0161 149.8 17.0 -0.865 1.468 10.1 90 2020 07 25 13 22 24 06.396 -04 29 56.51 68046 1.0161 146.3 17.0 -1.083 1.651 8.02 109 2020 07 25 14 22 38 12.057 -02 32 28.55 63726 1.0160 142.3 16.9 -1.322 1.876 7.22 152 2020 07 25 15 22 54 32.002 -00 15 14.15 58492 1.0160 137.7 16.9 -1.592 2.153 12.3 16 2020 07 25 16 23 14 26.645 +02 32 07.87 52211 1.0159 132.0 16.8 -1.907 2.504 25.6 37 2020 07 25 17 23 40 36.622 +06 08 56.62 44681 1.0159 124.6 16.7 -2.290 2.973 51.9 48 2020 07 25 18 00 19 34.477 +11 16 32.58 35594 1.0158 113.7 16.5 -2.780 3.659 111 55 2020 07 25 19 01 34 06.787 +19 37 28.54 24493 1.0157 94.0 16.4 -3.404 4.851 296 64 2020 07 25 20 05 58 55.981 +28 23 04.46 12011 1.0156 33.6 19?? -2.770 7.574 1437 97 2020 07 25 21 14 19 05.371 -23 29 07.62 16032 1.0157 97.1 15.3 3.581 6.381 828 109 2020 07 25 22 17 06 31.038 -29 16 34.23 28517 1.0158 134.8 15.4 3.183 4.354 238 93 2020 07 25 23 18 17 13.572 -27 45 47.31 38883 1.0159 150.4 15.6 2.600 3.392 110 87 2020 07 26 00 18 58 30.245 -25 46 58.82 47402 1.0160 159.7 15.8 2.152 2.797 59.7 86 2020 07 26 01 19 27 03.987 -23 55 52.29 54485 1.0160 166.4 15.9 1.795 2.375 34.3 88 2020 07 26 02 19 48 53.834 -22 14 58.47 60397 1.0161 171.7 15.9 1.497 2.052 19.4 94 2020 07 26 03 20 06 42.250 -20 42 31.79 65313 1.0161 176.1 Sha 1.239 1.794 10.1 108 2020 07 26 04 20 21 54.957 -19 16 28.88 69349 1.0161 179.8 Sha 1.007 1.584 5.21 146 2020 07 26 05 20 35 22.492 -17 55 03.61 72589 1.0161 176.7 Sha 0.795 1.412 5.52 21 2020 07 26 06 20 47 37.292 -16 36 48.39 75090 1.0161 173.5 16.3 0.597 1.276 7.98 44 2020 07 26 07 20 59 01.735 -15 20 29.44 76895 1.0161 170.5 16.5 0.408 1.175 10.2 54 2020 07 26 08 21 09 52.417 -14 05 01.47 78034 1.0161 167.7 16.6 0.225 1.109 11.9 60 2020 07 26 09 21 20 22.596 -12 49 22.95 78521 1.0161 164.9 16.7 0.046 1.080 13.1 64 2020 07 26 10 21 30 43.738 -11 32 31.90 78363 1.0161 162.1 16.8 -0.133 1.089 13.8 67 2020 07 26 11 21 41 06.658 -10 13 21.39 77560 1.0161 159.2 16.9 -0.314 1.136 14.0 71 2020 07 26 12 21 51 42.545 -08 50 34.19 76098 1.0161 156.3 16.9 -0.499 1.219 13.6 75 2020 07 26 13 22 02 44.088 -07 22 35.38 73956 1.0161 153.3 17.0 -0.692 1.338 12.6 80 2020 07 26 14 22 14 27.011 -05 47 21.21 71101 1.0160 150.0 17.0 -0.897 1.490 10.9 89 2020 07 26 15 22 27 12.504 -04 02 00.64 67482 1.0160 146.4 16.9 -1.117 1.679 8.70 107 2020 07 26 16 22 41 31.589 -02 02 22.56 63031 1.0159 142.3 16.9 -1.361 1.911 7.58 148 2020 07 26 17 22 58 13.877 +00 18 07.65 57648 1.0159 137.6 16.9 -1.637 2.198 12.6 15 2020 07 26 18 23 18 47.561 +03 10 43.57 51190 1.0158 131.7 16.8 -1.961 2.563 26.5 37 2020 07 26 19 23 46 13.312 +06 56 44.95 43444 1.0157 124.0 16.6 -2.358 3.057 54.8 48 2020 07 26 20 00 28 10.994 +12 22 56.72 34075 1.0157 112.3 16.4 -2.870 3.793 121 56 2020 07 26 21 01 53 34.417 +21 25 50.31 22612 1.0156 90.1 16.3 -3.505 5.122 345 66 2020 07 26 22 07 30 09.057 +23 41 56.98 10694 1.0155 13.6 25?? -1.777 8.095 1782 107 2020 07 26 23 15 01 26.349 -26 13 46.32 18016 1.0156 106.1 15.3 3.641 5.937 628 105 2020 07 27 00 17 23 37.755 -29 07 19.17 30266 1.0157 137.5 15.5 3.089 4.164 199 91 2020 07 27 01 18 27 22.392 -27 20 27.85 40326 1.0158 151.6 15.7 2.525 3.282 94.1 87 2020 07 27 02 19 05 48.428 -25 19 51.86 48608 1.0159 160.4 15.8 2.093 2.721 51.2 87 2020 07 27 03 19 32 53.665 -23 29 06.62 55498 1.0159 166.8 15.9 1.747 2.317 28.8 90 2020 07 27 04 19 53 50.536 -21 48 52.24 61249 1.0159 171.9 15.9 1.456 2.006 15.6 98 2020 07 27 05 20 11 04.204 -20 17 01.29 66023 1.0160 176.1 Sha 1.202 1.756 7.63 120 2020 07 27 06 20 25 52.693 -18 51 26.16 69932 1.0160 179.6 Sha 0.973 1.552 4.98 175 2020 07 27 07 20 39 02.660 -17 30 20.51 73053 1.0160 176.7 Sha 0.763 1.386 7.02 35 2020 07 27 08 20 51 04.412 -16 12 17.26 75442 1.0160 173.6 16.3 0.566 1.255 9.66 50 2020 07 27 09 21 02 19.090 -14 56 03.08 77140 1.0160 170.7 16.5 0.378 1.159 11.8 57 2020 07 27 10 21 13 02.554 -13 40 32.81 78174 1.0160 167.8 16.6 0.196 1.099 13.4 61 2020 07 27 11 21 23 27.629 -12 24 44.61 78557 1.0160 165.0 16.7 0.017 1.076 14.5 65 2020 07 27 12 21 33 45.564 -11 07 35.73 78296 1.0160 162.2 16.8 -0.162 1.091 15.1 68 2020 07 27 13 21 44 07.131 -09 47 57.82 77386 1.0160 159.4 16.9 -0.344 1.144 15.1 71 2020 07 27 14 21 54 43.650 -08 24 31.34 75814 1.0160 156.5 16.9 -0.530 1.234 14.7 75 2020 07 27 15 22 05 48.157 -06 55 37.67 73557 1.0159 153.4 16.9 -0.725 1.358 13.6 80 2020 07 27 16 22 17 37.041 -05 19 07.16 70578 1.0159 150.1 16.9 -0.932 1.516 11.8 89 2020 07 27 17 22 30 32.704 -03 31 58.94 66825 1.0159 146.4 16.9 -1.156 1.712 9.41 106 2020 07 27 18 22 45 08.415 -01 29 44.79 62225 1.0158 142.3 16.9 -1.405 1.952 7.98 145 2020 07 27 19 23 02 18.261 +00 54 42.02 56671 1.0157 137.4 16.8 -1.688 2.250 12.9 14 2020 07 27 20 23 23 40.419 +03 53 41.48 50011 1.0157 131.4 16.7 -2.023 2.633 27.6 37 2020 07 27 21 23 52 42.149 +07 51 09.52 42013 1.0156 123.2 16.6 -2.437 3.157 58.6 49 2020 07 27 22 00 38 38.020 +13 41 01.25 32316 1.0155 110.5 16.4 -2.976 3.956 134 57 2020 07 27 23 02 20 01.440 +23 34 58.81 20443 1.0154 84.6 16.4 -3.604 5.475 420 69 2020 07 28 00 09 20 25.009 +12 46 09.14 10047 1.0154 13.6 25?? -0.084 8.387 1974 117 2020 07 28 01 15 40 29.588 -27 59 06.37 20246 1.0155 113.9 15.3 3.611 5.511 472 101 2020 07 28 02 17 40 23.582 -28 50 03.97 32156 1.0156 140.2 15.5 2.986 3.973 164 90 2020 07 28 03 18 37 37.210 -26 51 44.97 41886 1.0157 152.9 15.7 2.445 3.167 79.4 87 2020 07 28 04 19 13 16.833 -24 50 25.07 49911 1.0157 161.2 15.9 2.029 2.640 42.9 88 2020 07 28 05 19 38 53.723 -23 00 27.68 56594 1.0158 167.3 15.9 1.694 2.256 23.4 93 2020 07 28 06 19 58 57.001 -21 21 07.66 62168 1.0158 172.1 15.9 1.410 1.956 11.9 105 2020 07 28 07 20 15 35.247 -19 50 02.01 66787 1.0159 176.3 Sha 1.161 1.715 5.79 143 2020 07 28 08 20 29 58.957 -18 25 01.14 70555 1.0159 179.4 Sha 0.936 1.518 6.03 20 2020 07 28 09 20 42 50.940 -17 04 19.45 73546 1.0159 176.7 Sha 0.728 1.358 8.88 44 2020 07 28 10 20 54 39.371 -15 46 30.91 75812 1.0159 173.7 16.3 0.533 1.233 11.5 54 2020 07 28 11 21 05 44.146 -14 30 22.90 77392 1.0159 170.7 16.5 0.346 1.143 13.5 59 2020 07 28 12 21 16 20.385 -13 14 50.48 78310 1.0159 167.9 16.6 0.164 1.089 14.9 63 2020 07 28 13 21 26 40.488 -11 58 51.54 78578 1.0159 165.1 16.7 -0.015 1.073 15.9 66 2020 07 28 14 21 36 55.501 -10 41 22.43 78201 1.0159 162.4 16.8 -0.195 1.095 16.4 68 2020 07 28 15 21 47 16.182 -09 21 13.16 77173 1.0159 159.5 16.9 -0.377 1.155 16.4 71 2020 07 28 16 21 57 54.034 -07 57 01.44 75480 1.0158 156.6 16.9 -0.565 1.251 15.8 75 2020 07 28 17 22 09 02.525 -06 27 04.32 73094 1.0158 153.5 16.9 -0.762 1.381 14.6 80 2020 07 28 18 22 20 58.859 -04 49 05.03 69978 1.0158 150.1 16.9 -0.972 1.547 12.7 88 2020 07 28 19 22 34 06.916 -02 59 50.92 66075 1.0157 146.4 16.9 -1.200 1.750 10.2 104 2020 07 28 20 22 49 02.733 -00 54 32.86 61306 1.0157 142.2 16.9 -1.454 2.000 8.43 143 2020 07 28 21 23 06 46.000 +01 34 35.65 55559 1.0156 137.1 16.8 -1.746 2.311 13.3 13 2020 07 28 22 23 29 07.721 +04 41 18.42 48669 1.0156 130.8 16.7 -2.094 2.715 29.1 37 2020 07 28 23 00 00 10.750 +08 52 53.99 40382 1.0155 122.1 16.5 -2.528 3.275 63.4 49 2020 07 29 00 00 51 25.932 +15 12 48.72 30304 1.0154 108.1 16.3 -3.097 4.158 153 58 2020 07 29 01 02 57 28.424 +26 02 06.79 17998 1.0153 76.8 16.5 -3.670 5.939 537 74 2020 07 29 02 11 12 16.619 -02 22 10.03 10603 1.0153 44.2 17?? 1.830 8.135 1717 120 2020 07 29 03 16 15 41.819 -28 56 21.76 22659 1.0154 120.7 15.3 3.522 5.116 353 98