"Pseudo-MPEC" for 'Multijunk' = C05GHG1 = C04W5Q1 = C073CX1 = C0F9L02
Created 2019 Apr 7 1:49:03 UT using Find_Orb
Click here for an explanation of pseudo-MPECs
It is now clear that this object is also ZTF02Rj = ZTF02Rn, observed on 2019 January 31. There is also a decent match for orbital elements for ZTF01a9 = ZV2F779 = ZTF01nS, an ETBO tracked in November 2018; and a good match to elements for YS18A5C = YS16534 = A104ayW = A104lks = YT273BF = A104shw = YUA31FA = YU3F416, the "mystery object" that showed up frequently on NEOCP in late 2017. In those cases, there is ambiguity as to how many orbits occurred in between, and the unpredictable nature of the orbit means we'll never really know what happened in between the arcs. But it's definitely one object seen at different times, and it'll probably crop up again and again.
It is also likely, though not conclusively proven, that this is XW99CEC = XV902A4, a bit of junk found in November 2016.
Because it keeps getting found (it was probably recovered as C0F3591 in September 2019), I've taken to calling it 'Multijunk'. It's easier to remember than the various temporary designations.
Astrometry:
ZTF02Rj C2019 01 31.21893108 00 33.23 +19 24 19.4 ~1V6mx17.62RUNEOCPI41
ZTF02Rj C2019 01 31.21927808 00 35.99 +19 24 03.8 ~1V6mx17.62RUNEOCPI41
ZTF02Rj C2019 01 31.22136908 00 53.05 +19 22 29.4 ~1V6mx17.76RUNEOCPI41
ZTF02Rj C2019 01 31.22171608 00 55.89 +19 22 13.3 ~1V6mx17.76RUNEOCPI41
ZTF02Rj C2019 01 31.23866208 03 11.22 +19 09 05.0 ~1V73x17.86RUNEOCPI41
ZTF02Rj C2019 01 31.23900908 03 13.91 +19 08 48.9 ~1V73x17.86RUNEOCPI41
ZTF02Rj C2019 01 31.24622308 04 10.04 +19 03 02.2 ~1V7Xx17.77RUNEOCPI41
ZTF02Rj C2019 01 31.24657008 04 12.68 +19 02 45.6 ~1V7Xx17.77RUNEOCPI41
ZTF02Rn C2019 01 31.28164008 08 35.12 +18 33 12.9 ~1VI1x17.68RUNEOCPI41
ZTF02Rn C2019 01 31.28198708 08 37.61 +18 32 54.3 ~1VI1x17.68RUNEOCPI41
ZTF02Rj CK190131:07100474 122.16835 +18.25611 x17.7 GV H01
ZTF02Rj CK190131:07201509 122.38189 +18.14251 x17.7 GV H01
ZTF02Rj KC2019 01 31.30970 08 10 51.11 +18 12 06.0 x18.8 R 291
ZTF02Rj KC2019 01 31.31093 08 10 59.78 +18 10 55.4 x18.3 R 291
ZTF02Rj KC2019 01 31.31223 08 11 08.94 +18 09 40.2 x18.0 R 291
ZTF02Rj CK190131:07301405 122.59107 +18.02970 x17.7 GV H01
ZTF02Rj CK190131:07400200 122.79620 +17.91766 x17.8 GV H01
ZTF02Rj CK190131:08344721 123.94830 +17.26987 x17.9 GV H01
ZTF02Rj CK190131:08440253 124.14531 +17.15710 x17.6 GV H01
ZTF02Rn C2019 01 31.36924208 18 54.62 +17 09 23.7 ~1VI1x17.79RUNEOCPI41
ZTF02Rn C2019 01 31.36958908 18 57.05 +17 09 02.6 ~1VI1x17.79RUNEOCPI41
ZTF02Rj CK190131:08594591 124.48257 +16.96335 x17.6 GV H01
ZTF02Rj CK190131:09101092 124.70780 +16.83377 x17.8 GV H01
C04W5Q1 C2019 03 06.33243 11 30 09.28 -06 39 20.6 ~369I 17.5 GVNEOCP703
C04W5Q1 C2019 03 06.33772 11 30 35.66 -06 46 03.0 ~369I 18.0 GVNEOCP703
C04W5Q1 C2019 03 06.34300 11 31 02.24 -06 52 45.4 ~369I VNEOCP703
C04W5Q1 C2019 03 06.34828 11 31 28.61 -06 59 30.0 ~369I VNEOCP703
C05GHG1 C2019 03 15.32034 12 07 27.06 -11 50 20.5 ~3FBP 17.9 GVNEOCP703
C05GHG1 C2019 03 15.33736 12 08 55.17 -12 11 38.9 ~3FBP 18.6 GVNEOCP703
C05GHG1 C2019 03 15.40592 12 15 14.17 -13 37 08.2 ~3FBP 18.3 GVNEOCP703
C05GHG1 C2019 03 15.40644 12 15 17.29 -13 37 46.9 ~3FBP 18.4 GVNEOCP703
C05GHG1 C2019 03 15.40696 12 15 20.35 -13 38 25.1 ~3FBP 18.3 GVNEOCP703
C05GHG1 C2019 03 15.47978 12 23 26.15 -15 06 47.6 ~3FCK 18.3 GVNEOCP703
C05GHG1 C2019 03 15.48012 12 23 28.70 -15 07 12.6 ~3FCK VNEOCP703
C05GHG1 C2019 03 15.48030 12 23 30.08 -15 07 25.6 ~3FCK 17.9 GVNEOCP703
C073CX1 C2019 04 06.24723 12 24 50.92 -13 53 33.6 ~46CX 17.3 GVNEOCP703
C073CX1 C2019 04 06.25257 12 25 15.06 -13 59 08.7 ~46CX 17.8 GVNEOCP703
C073CX1 C2019 04 06.25790 12 25 38.76 -14 04 35.7 ~46CX 17.6 GVNEOCP703
C073CX1 C2019 04 06.26323 12 26 02.26 -14 10 02.7 ~46CX 17.7 GVNEOCP703
C073CX1 KC2019 04 07.01881114 32 21.031-26 23 58.73 17.8 GV J04
C073CX1 KC2019 04 07.01923114 32 25.672-26 24 36.33 17.9 GV J04
C073CX1 KC2019 04 07.01965414 32 30.397-26 25 13.17 17.9 GV J04
C073CX1 KC2019 04 07.02007514 32 35.068-26 25 50.23 17.9 GV J04
C073CX1 KC2019 04 07.02049914 32 39.759-26 26 27.36 17.9 GV J04
C073CX1 KC2019 04 07.02110514 32 46.523-26 27 20.78 17.8 GV J04
C073CX1 KC2019 04 07.02194814 32 55.914-26 28 35.18 17.8 GV J04
C073CX1 KC2019 04 07.02237014 33 00.603-26 29 12.05 18.0 GV J04
Station data:
(291) LPL/Spacewatch II (N31.961669 W111.599905) US/Arizona. Observers J.
V. Scotti, R. S. McMillan. 1.8-m f/2.7 reflector + CCD.
(703) Catalina Sky Survey (N32.417006 W110.732640) US/Arizona. Observer R.
A. Kowalski. Measurers B. M. Africano, E. J. Christensen, G. A. Farneth,
D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A. Kowalski, S. M.
Larson, G. J. Leonard, T. A. Pruyne, R. L. Seaman, F. C. Shelly. 0.68-m
Schmidt + 10K CCD.
(H01) Magdalena Ridge Observatory, Socorro (N33.984833 W107.189333) US/New
Mexico. Observers W. H. Ryan, E. V. Ryan. Measurer W. H. Ryan.
(I41) Palomar Mountain--ZTF (N33.357340 W116.859780) US/California. 1.2-m
f/2.44 Oschin Schmidt + CCD.
(J04) ESA Optical Ground Station, Tenerife (N28.300924 W16.511830) Canary
Islands (Spain). Observer D. Abreu. Measurers M. Micheli, D. Koschny, A.
Knöfel, M. Busch, E. Schwab. 1.0-m f/4.4 reflector + CCD.
Orbital elements: C05GHG1 = C04W5Q1 = C073CX1
Perigee 2019 Mar 13.946701 +/- 0.000594 TT = 22:43:14 (JD 2458556.446701)
A1: 1.51e-5 +/- 2.79e-8 A2: -1.28e-6 +/- 1.34e-8 A3: -1.83e-6 +/- 7.67e-9 AU/day^2
Epoch 2019 Mar 15.0 TT = JDT 2458557.5 Gray
M 170.52100444 +/- 0.09 (J2000 equator)
n 161.89226331 +/- 0.00595 Peri. 9.68899 +/- 0.015
a 71964.6873 +/- 1.76 Node 344.03164 +/- 0.014
e 0.7159131 +/- 7.24e-5 Incl. 29.45836 +/- 0.0016
P3202.07m/2.224d H 33.0 G 0.15 U 9.3
q 20444.2217 +/- 4.83 Q 123485.152 +/- 7.82
24 of 47 observations 2019 Mar. 6-Apr. 7; mean residual 4".993
Residuals in arcseconds: 190131 I41(1301+ 3754-) 190131 H01(1192+ 3377-) 190315 703 4.66+ 4.15- 190131 I41(1299+ 3753-) 190131 H01(1138+ 3215-) 190315 703 4.66+ 4.75- 190131 I41(1297+ 3746-) 190131 H01(1128+ 3186-) 190315 703 5.08+ 4.83- 190131 I41(1297+ 3745-) 190131 I41(1115+ 3177-) 190406 703 .228- .144- 190131 I41(1280+ 3688-) 190131 I41(1115+ 3175-) 190406 703 1.66+ 2.01- 190131 I41(1279+ 3686-) 190131 H01(1111+ 3138-) 190406 703 .181+ .779+ 190131 I41(1272+ 3662-) 190131 H01(1100+ 3105-) 190406 703 2.14- .722+ 190131 I41(1271+ 3660-) 190306 703 6.93+ 12.6- 190407 J04 1.38- 1.19+ 190131 I41(1231+ 3532-) 190306 703 1.83+ 3.81- 190407 J04 1.31- .313+ 190131 I41(1230+ 3531-) 190306 703 1.07- 4.24+ 190407 J04 .579- .458+ 190131 H01(1220+ 3462-) 190306 703 8.95- 10.1+ 190407 J04 .307- .208+ 190131 H01(1210+ 3434-) 190315 703 9.85+ 9.20- 190407 J04 .240- .149+ 190131 291(1203+ 3423-) 190315 703 1.86- 6.16+ 190407 J04 .604+ .289- 190131 291(1201+ 3418-) 190315 703 9.42- 6.76+ 190407 J04 1.43+ .990- 190131 291(1199+ 3413-) 190315 703 8.99- 6.42+ 190407 J04 1.64+ .968- 190131 H01(1201+ 3405-) 190315 703 9.50- 6.56+ Ephemerides (geocentric): Date (UTC) HH RA Dec delta elong mag " sig PA ---- -- -- -- ------------- ----------- ------ ----- --- ---- --- 2019 04 06 00 11 47 02.534 -07 17 45.88 113287 162.4 18.3 73.1 119 2019 04 06 01 11 53 24.782 -08 07 38.66 115661 163.9 18.3 69.7 118 2019 04 06 02 11 59 34.093 -08 55 16.97 117761 165.3 18.3 66.8 118 2019 04 06 03 12 05 32.863 -09 40 59.76 119593 166.5 18.3 64.3 118 2019 04 06 04 12 11 23.168 -10 25 03.15 121167 167.7 18.3 62.1 118 2019 04 06 05 12 17 06.839 -11 07 41.05 122486 168.7 18.3 60.2 118 2019 04 06 06 12 22 45.528 -11 49 05.60 123556 169.6 18.2 58.5 117 2019 04 06 07 12 28 20.749 -12 29 27.51 124380 170.3 18.2 57.1 117 2019 04 06 08 12 33 53.927 -13 08 56.34 124960 170.8 18.2 55.8 117 2019 04 06 09 12 39 26.422 -13 47 40.76 125300 171.1 18.2 54.8 116 2019 04 06 10 12 44 59.567 -14 25 48.67 125400 171.2 18.2 54.0 116 2019 04 06 11 12 50 34.696 -15 03 27.43 125259 171.0 18.2 53.4 116 2019 04 06 12 12 56 13.168 -15 40 43.90 124879 170.6 18.2 52.9 115 2019 04 06 13 13 01 56.403 -16 17 44.65 124257 170.1 18.2 52.7 115 2019 04 06 14 13 07 45.908 -16 54 35.98 123391 169.3 18.3 52.7 115 2019 04 06 15 13 13 43.317 -17 31 24.03 122279 168.4 18.3 52.8 114 2019 04 06 16 13 19 50.431 -18 08 14.84 120916 167.3 18.3 53.3 114 2019 04 06 17 13 26 09.274 -18 45 14.46 119298 166.2 18.3 54.0 113 2019 04 06 18 13 32 42.152 -19 22 28.94 117419 164.9 18.3 54.9 113 2019 04 06 19 13 39 31.741 -20 00 04.41 115272 163.5 18.3 56.3 112 2019 04 06 20 13 46 41.189 -20 38 07.03 112849 162.0 18.3 58.0 111 2019 04 06 21 13 54 14.265 -21 16 43.05 110139 160.4 18.3 60.2 111 2019 04 06 22 14 02 15.546 -21 55 58.63 107131 158.6 18.3 63.1 110 2019 04 06 23 14 10 50.692 -22 35 59.62 103811 156.8 18.3 66.6 109 2019 04 07 00 14 20 06.824 -23 16 51.16 100164 154.7 18.3 71.1 108 2019 04 07 01 14 30 13.076 -23 58 36.80 96170 152.5 18.3 76.8 107 2019 04 07 02 14 41 21.427 -24 41 16.91 91806 150.0 18.2 84.1 106 2019 04 07 03 14 53 47.969 -25 24 45.75 87045 147.3 18.2 93.6 104 2019 04 07 04 15 07 54.934 -26 08 45.58 81856 144.2 18.1 106 103 2019 04 07 05 15 24 14.063 -26 52 35.02 76199 140.6 18.1 123 101 2019 04 07 06 15 43 32.456 -27 34 44.33 70026 136.4 18.0 148 98 2019 04 07 07 16 07 03.320 -28 11 59.80 63280 131.4 17.9 183 96 2019 04 07 08 16 36 46.993 -28 37 08.02 55894 125.0 17.9 239 92 2019 04 07 09 17 16 15.029 -28 32 49.21 47798 116.5 17.8 334 87 2019 04 07 10 18 12 09.226 -27 12 55.98 38955 104.3 17.7 516 81 2019 04 07 11 19 38 11.096 -22 18 10.25 29547 84.5 17.9 926 71 2019 04 07 12 22 02 40.433 -06 43 52.31 20923 47.0 19?? 1914 62 2019 04 07 13 02 02 06.378 +21 55 49.39 18581 20.8 24?? 2509 71 2019 04 07 14 05 49 55.853 +27 54 59.62 25334 70.6 18.3 1397 97 2019 04 07 15 07 43 39.050 +21 52 03.68 34716 96.7 17.7 769 109 2019 04 07 16 08 43 26.433 +16 16 24.55 43872 111.6 17.7 496 114 2019 04 07 17 09 21 05.389 +11 59 18.90 52312 121.5 17.8 357 116 2019 04 07 18 09 47 50.539 +08 39 15.08 60017 128.7 17.9 277 118 2019 04 07 19 10 08 23.511 +05 58 08.03 67049 134.3 18.0 226 118 2019 04 07 20 10 25 02.111 +03 44 16.85 73479 138.9 18.1 190 119 2019 04 07 21 10 39 02.196 +01 50 11.49 79369 142.7 18.1 165 119 2019 04 07 22 10 51 09.323 +00 10 53.84 84770 146.0 18.2 146 119 2019 04 07 23 11 01 52.737 -01 17 00.76 89725 148.8 18.2 131 119 2019 04 08 00 11 11 32.220 -02 35 57.54 94270 151.4 18.3 119 119 2019 04 08 01 11 20 21.730 -03 47 42.65 98434 153.7 18.3 110 119 2019 04 08 02 11 28 31.469 -04 53 35.70 102241 155.9 18.3 102 119 2019 04 08 03 11 36 09.120 -05 54 37.77 105712 157.8 18.3 94.9 119 2019 04 08 04 11 43 20.619 -06 51 36.66 108864 159.6 18.3 89.3 119 2019 04 08 05 11 50 10.666 -07 45 10.44 111712 161.3 18.3 84.5 118 2019 04 08 06 11 56 43.057 -08 35 49.94 114269 162.8 18.3 80.4 118 2019 04 08 07 12 03 00.923 -09 24 00.48 116545 164.2 18.3 76.8 118 2019 04 08 08 12 09 06.896 -10 10 03.15 118549 165.5 18.3 73.7 118 2019 04 08 09 12 15 03.229 -10 54 15.74 120289 166.8 18.3 71.1 117 2019 04 08 10 12 20 51.891 -11 36 53.44 121772 167.9 18.3 68.7 117 2019 04 08 11 12 26 34.635 -12 18 09.35 123001 168.8 18.3 66.7 117