"Pseudo-MPEC" for ZTF09oP = ZTF09mO = A10jyaB
Created 2020 Jan 21 15:58:33 UT using Find_Orb
Click here for an explanation of pseudo-MPECs
I had the two ZTF objects linked with eight orbits in between over the course of a week. However, I had to admit that seven or even five or six orbits could fit passably well, and that seven had the benefit of resulting in a nearly one-day orbit.
With the addition of the A10jyaB data, I see that it's definitely a one-day orbit. Residuals are still crummy, even with three non-grav parameters. (Not really all that surprising.) But I'm confident in the ID and the overall orbit (i.e., it really is a geosat.)
Astrometry:
ZTF09mO* C2020 01 05.44243107 30 46.04 +21 10 57.3 ~15LF 15.92gUNEOCPI41
ZTF09mO C2020 01 05.44277807 30 53.52 +21 11 25.4 ~15LF 15.92gUNEOCPI41
ZTF09mO C2020 01 05.45803207 36 36.45 +21 31 19.8 ~15LF 15.79gUNEOCPI41
ZTF09mO C2020 01 05.45838007 36 44.48 +21 31 46.7 ~15LF 15.79gUNEOCPI41
ZTF09oP C2020 01 12.25254006 56 56.14 +17 51 09.0 ~1DDY UNEOCPI41
ZTF09oP C2020 01 12.25288706 57 01.48 +17 51 48.0 ~1DDY UNEOCPI41
ZTF09oP* C2020 01 12.25902806 58 35.82 +18 03 17.5 ~1D45 15.69RUNEOCPI41
ZTF09oP C2020 01 12.25937506 58 41.03 +18 03 55.2 ~1D45 15.69RUNEOCPI41
ZTF09oP C2020 01 12.26177106 59 17.68 +18 08 20.2 ~1D45 15.66RUNEOCPI41
ZTF09oP C2020 01 12.26211806 59 22.96 +18 08 58.9 ~1D45 15.66RUNEOCPI41
A10jyaB* C2020 01 21pY(AstrometryIQLCredacted;ubm7qqclickTQmu2Lhere@bp,5T08
A10jyaB C2020 01 21,ymH\c\bk+nqforOCYB[+miex\`0b[LXAbe@UgI?c/g4^0HZE-'5T08
A10jyaB C2020 01 21r%K3j4nl5X1U3y1+*H1q]I\_explanation]'lddDBw4Vk*Zc4ivT08
Station data:
(I41) Palomar Mountain--ZTF (N33.357340 W116.859780) US/California. 1.2-m
f/2.44 Oschin Schmidt + CCD.
(T08) ATLAS-MLO, Mauna Loa (N19.536152 W155.576050) US/Hawaii. Observers
L. Denneau, A. Heinze, H. Weiland, J. Tonry, H. Flewelling, A.
Fitzsimmons, D. Young, B. Stalder. Measurers L. Denneau, A. Heinze, J.
Tonry. 0.5-m f/2.0 Schmidt + CCD.
Orbital elements: ZTF09oP = ZTF09mO = A10jyaB
Perigee 2020 Jan 11.755597 +/- 0.0159 TT = 18:08:03 (JD 2458860.255597)
A1: 3.53e-5 +/- 3.41e-6 A2: 8.53e-6 +/- 1.75e-6 A3: 2.32e-6 +/- 1.09e-6 AU/day^2
Epoch 2020 Jan 12.0 TT = JDT 2458860.5 Gray
M 87.641622580 +/- 5.7 (J2000 equator)
n 358.594347530 +/- 0.184 Peri. 227.625314 +/- 1.2
a 42351.41058 +/- 14.5 Node 58.677124 +/- 0.056
e 0.73702720 +/- 0.00389 Incl. 26.617356 +/- 0.16
P1445.62m/1.004d H 32.2 G 0.15 U 11.6
q 11137.26897 +/- 165 Q 73565.55219 +/- 168
From 13 observations 2020 Jan. 5-21; mean residual 38".818
Residuals in arcseconds: 200105 I41 53.4- 10.7- 200112 I41 81.3- 18.1- 200121 T08 20.1+ 17.8- 200105 I41 50.7- 9.74- 200112 I41 23.2+ 6.30+ 200121 T08 19.1- 2.37- 200105 I41 52.3+ 9.22+ 200112 I41 27.4+ 6.73+ 200121 T08 16.6- 13.9+ 200105 I41 52.5+ 9.74+ 200112 I41 66.3+ 15.2+ 200112 I41 87.2- 19.2- 200112 I41 71.5+ 16.9+ Ephemerides (geocentric): Date (UTC) HH RA Dec delta r elong mag " sig PA ---- -------- -------------- ----------- ----- ------ ----- --- -------- 2020 01 21 00 04 06 01.303 +02 35 02.61 35145 .98410 118.2 16.3 436' 65 2020 01 21 01 04 53 32.912 +08 12 59.67 43044 .98419 131.3 16.3 250' 67 2020 01 21 02 05 28 00.559 +12 00 32.08 49680 .98426 140.5 16.4 9892 68 2020 01 21 03 05 55 34.671 +14 47 13.89 55215 .98431 147.6 16.4 7174 70 2020 01 21 04 06 19 02.926 +16 56 28.73 59781 .98436 153.6 16.4 5592 72 2020 01 21 05 06 39 55.152 +18 40 42.42 63478 .98441 158.7 16.4 4634 73 2020 01 21 06 06 59 05.697 +20 07 07.29 66377 .98444 163.3 16.3 4059 74 2020 01 21 07 07 17 10.886 +21 20 09.60 68528 .98447 167.5 16.3 3743 75 2020 01 21 08 07 34 37.318 +22 22 39.46 69969 .98448 171.3 16.1 3619 76 2020 01 21 09 07 51 46.339 +23 16 26.27 70720 .98450 174.5 16.0 3651 77 2020 01 21 10 08 08 56.784 +24 02 37.32 70795 .98450 176.0 Sha 3824 79 2020 01 21 11 08 26 26.978 +24 41 46.68 70195 .98450 174.1 16.0 4138 80 2020 01 21 12 08 44 36.532 +25 13 57.73 68912 .98449 170.7 16.1 4608 82 2020 01 21 13 09 03 48.375 +25 38 39.46 66925 .98448 166.7 16.2 5266 84 2020 01 21 14 09 24 31.550 +25 54 34.66 64205 .98445 162.2 16.3 6170 86 2020 01 21 15 09 47 25.644 +25 59 14.19 60706 .98442 157.2 16.3 7419 88 2020 01 21 16 10 13 28.626 +25 48 02.30 56364 .98438 151.5 16.3 9192 91 2020 01 21 17 10 44 12.166 +25 12 14.78 51089 .98433 144.6 16.3 197' 95 2020 01 21 18 11 22 15.214 +23 53 58.30 44764 .98428 136.0 16.3 268' 99 2020 01 21 19 12 12 49.283 +21 11 53.38 37239 .98420 124.1 16.2 394' 104 2020 01 21 20 13 28 06.573 +15 11 58.72 28399 .98412 105.4 16.2 665' 111 2020 01 21 21 15 46 46.421 -00 24 01.27 18804 .98402 67.9 17.0 24d 116 2020 01 21 22 21 20 10.468 -25 53 04.93 14498 .98398 16.5 24?? 50d 92 2020 01 21 23 01 59 51.351 -12 01 12.12 22064 .98406 82.8 16.5 26d 67 2020 01 22 00 03 44 22.401 +00 07 15.04 31592 .98416 111.4 16.2 621' 65 2020 01 22 01 04 41 27.134 +06 58 11.60 39962 .98425 127.0 16.3 331' 66 2020 01 22 02 05 20 42.964 +11 21 39.56 47036 .98432 137.6 16.3 210' 68 2020 01 22 03 05 51 10.294 +14 27 59.42 52961 .98439 145.5 16.4 8919 70 2020 01 22 04 06 16 34.420 +16 48 40.82 57877 .98444 152.0 16.4 6835 71 2020 01 22 05 06 38 49.560 +18 39 45.18 61894 .98449 157.5 16.4 5586 73 2020 01 22 06 06 59 01.985 +20 10 11.81 65091 .98452 162.3 16.3 4830 74 2020 01 22 07 07 17 54.405 +21 25 24.95 67525 .98455 166.6 16.3 4394 76 2020 01 22 08 07 35 57.018 +22 28 48.34 69237 .98457 170.6 16.2 4185 77 2020 01 22 09 07 53 33.178 +23 22 32.06 70255 .98459 173.9 16.0 4156 78 2020 01 22 10 08 11 02.699 +24 07 56.86 70595 .98459 175.6 Sha 4281 79 2020 01 22 11 08 28 44.090 +24 45 46.41 70261 .98459 174.2 16.0 4555 81 2020 01 22 12 08 46 56.384 +25 16 12.00 69250 .98459 170.9 16.1 4986 82 2020 01 22 13 09 06 01.026 +25 38 50.93 67547 .98457 167.0 16.2 5602 84 2020 01 22 14 09 26 24.288 +25 52 37.67 65126 .98455 162.7 16.3 6449 86 2020 01 22 15 09 48 40.880 +25 55 23.50 61947 .98453 157.8 16.4 7614 89 2020 01 22 16 10 13 40.092 +25 43 13.85 57957 .98449 152.3 16.4 9247 92 2020 01 22 17 10 42 37.303 +25 08 56.64 53076 .98444 145.9 16.4 194' 95 2020 01 22 18 11 17 38.053 +23 58 28.13 47203 .98439 138.0 16.3 255' 99 2020 01 22 19 12 02 35.474 +21 41 26.36 40203 .98432 127.5 16.3 359' 103 2020 01 22 20 13 05 55.076 +17 01 39.62 31941 .98424 111.9 16.2 565' 109 2020 01 22 21 14 50 59.239 +06 07 28.02 22556 .98415 84.2 16.5 18d 115 2020 01 22 22 18 47 45.645 -19 25 44.29 14883 .98408 21.1 22?? 42d 107 2020 01 22 23 00 47 18.742 -18 33 35.14 18485 .98412 63.3 17.3 40d 72 2020 01 23 00 03 15 32.790 -03 11 15.63 27881 .98422 102.5 16.3 918' 65 2020 01 23 01 04 26 15.603 +05 21 13.16 36693 .98431 122.0 16.2 447' 66 2020 01 23 02 05 11 44.802 +10 32 07.99 44223 .98439 134.3 16.3 269' 67 2020 01 23 03 05 45 44.251 +14 03 14.68 50557 .98446 143.2 16.3 185' 69 2020 01 23 04 06 13 25.273 +16 37 54.78 55840 .98452 150.2 16.4 8312 71 2020 01 23 05 06 37 16.019 +18 37 09.78 60190 .98457 156.1 16.3 6684 73 2020 01 23 06 06 58 38.587 +20 12 21.72 63695 .98461 161.2 16.3 5697 74 2020 01 23 07 07 18 23.932 +21 30 09.63 66419 .98464 165.7 16.3 5111 76 2020 01 23 08 07 37 06.829 +22 34 39.50 68410 .98466 169.8 16.2 4799 77 2020 01 23 09 07 55 13.222 +23 28 26.91 69699 .98468 173.2 16.1 4696 78 2020 01 23 10 08 13 04.288 +24 13 08.94 70305 .98469 175.1 Sha 4764 80 2020 01 23 11 08 30 59.019 +24 49 40.61 70239 .98469 174.1 16.0 4990 81