"Pseudo-MPEC" for C0Z1JL1 = ZTF0Csc = C21KXA2 = ZTF0Czu = 'Multijunk'

Click here for an updated pseudo-MPEC. Since this one was issued, the object was picked up again as ZTF0D8Q and ZTF0D8g.

TLEs are available for this object, and for some of the other objects on these pages. Be warned that, for reasons discussed below, the TLEs for this particular object may not be all that good. In fact, they're probably decent for a few days around the observations shown below, and garbage before and after that.

This is a recrudescence of 'Multijunk' = C05GHG1 = many other designations, an unidentified Empty Trash Bag Object (ETBO). We last saw it in April, but sightings go back to 2017 and possibly 2016; it can be hard to link one appearance with another, because it gets blown around a lot by solar radiation. If it wasn't "anchored" by being in Earth orbit, the sun's light pressure would be considerably more forceful on it than the sun's gravity, and it would fly away from the sun in an (outward-curved) hyperbola, as if it were some sort of antigravity.

It has now been on NEOCP more than twenty times, having been found multiple times each by Catalina, ATLAS, and ZTF.

As with other ETBOs, it can't be tracked with any degree of certainty more than a few days in advance. It will probably move around a bit such that apogee is on the daylit side of the earth; we'll lose it for another few months or a year, and then it'll start showing up on NEOCP again. With luck, those semi-random changes will cause the perigee to drop into the earth's atmosphere; with such a high area/mass ratio, it wouldn't last very long.

Created 2020 Feb 3 13:19:58 UT using Find_Orb

Click here for an explanation of pseudo-MPECs

 
 Astrometry: 
     C0Z1JL1* C2020 01 30.32531 09 07 24.87 +05 27 27.0    ~1U8bx17.6 GVNEOCP703
     C0Z1JL1  C2020 01 30.33058 09 07 50.41 +05 24 27.6    ~1U8bx18.1 GVNEOCP703
     C0Z1JL1  C2020 01 30.34114 09 08 42.85 +05 18 05.3    ~1U8bx18.8 GVNEOCP703
     C0Z1JL1  C2020 01 30.38473 09 12 27.51 +04 50 27.6    ~1U9bx17.7 GVNEOCPI52
     C0Z1JL1  C2020 01 30.38512 09 12 29.61 +04 50 11.9    ~1U9bx17.7 GVNEOCPI52
     C0Z1JL1  C2020 01 30.38551 09 12 31.71 +04 49 56.5    ~1U9bx17.6 GVNEOCPI52
     C0Z1JL1  C2020 01 30.38590 09 12 33.81 +04 49 41.0    ~1U9bx17.8 GVNEOCPI52
     ZTF0Csc* C2020 02 01.20989608 26 39.39 +08 11 17.8    ~21J7 17.84RUNEOCPI41
     ZTF0Csc  C2020 02 01.21024308 26 40.95 +08 11 11.2    ~21J7 17.84RUNEOCPI41
     C21KXA2* C2020 02 01.24362 08 28 10.71 +08 03 18.3    ~21Dj 18.6 GVNEOCPG96
     C21KXA2  C2020 02 01.24922 08 28 32.83 +08 01 16.5    ~21Dj 18.0 GVNEOCPG96
     ZTF0Csc  C2020 02 01.25237308 29 42.50 +07 56 55.5    ~21J7 18.29gUNEOCPI41
     ZTF0Csc  C2020 02 01.25272008 29 43.89 +07 56 47.8    ~21J7 18.29gUNEOCPI41
     C21KXA2  C2020 02 01.25606 08 28 59.75 +07 58 45.1    ~21Dj 17.8 GVNEOCPG96
     C21KXA2  C2020 02 01.26166 08 29 21.70 +07 56 37.5    ~21Dj 18.0 GVNEOCPG96
     C21KXA2  C2020 02 01.28714908 30 22.26 +07 42 24.0    ~21Dj 17.7 GVNEOCPH01
     ZTF0Csc  C2020 02 01.28994208 32 12.68 +07 42 42.7    ~21J7 17.84RUNEOCPI41
     ZTF0Csc  C2020 02 01.29028908 32 14.01 +07 42 35.4    ~21J7 17.84RUNEOCPI41
     C21KXA2  C2020 02 01.29042008 30 34.93 +07 41 02.6    ~21Dj 17.7 GVNEOCPH01
     C21KXA2  C2020 02 01.29403 08 31 26.17 +07 43 47.4    ~21Dj 17.8 GVNEOCPI52
     C21KXA2  C2020 02 01.29416 08 31 26.68 +07 43 44.2    ~21Dj 17.7 GVNEOCPI52
     C21KXA2  C2020 02 01.29429 08 31 27.16 +07 43 40.7    ~21Dj 17.7 GVNEOCPI52
     C21KXA2  C2020 02 01.29443 08 31 27.69 +07 43 38.0    ~21Dj 17.8 GVNEOCPI52
     C21KXA2  C2020 02 01.30191308 31 19.49 +07 36 11.9    ~21Dj 17.8 GVNEOCPH01
     C21KXA2  C2020 02 01.30899508 31 47.08 +07 33 08.6    ~21Dj 17.7 GVNEOCPH01
     C21KXA2  C2020 02 01.37469 08 36 44.73 +07 07 26.5    ~21Dj       VNEOCPI52
     C21KXA2  C2020 02 01.37494 08 36 45.80 +07 07 19.4    ~21Dj 17.7 GVNEOCPI52
     C21KXA2  C2020 02 01.37518 08 36 46.78 +07 07 12.4    ~21Dj 17.7 GVNEOCPI52
     C21KXA2  C2020 02 01.48180 08 45 39.58 +06 10 57.4    ~21Dj 18.2 GVNEOCPG96
     C21KXA2  C2020 02 01.48189 08 45 40.11 +06 10 54.1    ~21Dj 18.0 GVNEOCPG96
     C21KXA2  C2020 02 01.48199 08 45 40.70 +06 10 51.0    ~21Dj 17.9 GVNEOCPG96
     C21KXA2  C2020 02 01.48208 08 45 41.24 +06 10 47.9    ~21Dj 18.0 GVNEOCPG96
     ZTF0Czu* C2020 02 03.20172507 53 38.83 +09 45 48.9    ~23DD 17.57RUNEOCPI41
     ZTF0Czu  C2020 02 03.20207207 53 40.51 +09 45 42.4    ~23DD 17.57RUNEOCPI41
     ZTF0Czu  C2020 02 03.20217607 53 40.93 +09 45 41.0    ~23DD 17.52RUNEOCPI41
     ZTF0Czu  C2020 02 03.20252307 53 42.65 +09 45 34.8    ~23DD 17.52RUNEOCPI41

Station data:
(703) Catalina Sky Survey  (N32.417006 W110.732640)  US/Arizona.  Observer D.
   C. Fuls. Measurers E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R.
   Gibbs, A. D. Grauer, H. Gröller, R. A. Kowalski, S. M. Larson, G. J.
   Leonard, T. A. Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W.
   Wierzchos. 0.68-m Schmidt + 10K CCD.
(G96) Mt. Lemmon Survey  (N32.442754 W110.788720)  US/Arizona.  Observer D.
   Rankin. Measurers E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R.
   Gibbs, A. D. Grauer, H. Gröller, R. A. Kowalski, S. M. Larson, G. J.
   Leonard, T. A. Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W.
   Wierzchos. 1.5-m reflector + 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. 2.4-m
   f/8.9 reflector + CCD.
(I41) Palomar Mountain--ZTF  (N33.357340 W116.859780)  US/California. 1.2-m
   f/2.44 Oschin Schmidt + CCD.
(I52) Steward Observatory, Mt. Lemmon Station  (N32.442547 W110.788920)
   US/Arizona.  Observers T. A. Pruyne, B. M. Africano, E. J. Christensen, G.
   A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Gröller, J. A.
   Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, D. Rankin, R. L.
   Seaman, F. C. Shelly. 1.0-m reflector + CCD.

Orbital elements:  C0Z1JL1 = ZTF0Csc = C21KXA2 = ZTF0Czu = 'Multijunk'
   Perigee 2020 Feb 2.353775 +/- 0.00289 TT =  8:29:26 (JD 2458881.853775)
A1: 2.67e-6 +/- 1.07e-7   A2: -7.45e-6 +/- 1.94e-6 AU/day^2
Epoch 2020 Feb  3.0 TT = JDT 2458882.5                        Find_Orb
M 102.421997702 +/- 0.25            (J2000 equator)
n 158.492801936 +/- 0.354           Peri.  321.483647 +/- 0.038
a 72990.07513 +/- 109               Node   343.489197 +/- 0.11
e   0.79627821 +/- 0.00196          Incl.   15.006623 +/- 0.0034
P3270.75m/2.271d           H 32.9   G  0.15   U 12.0
q 14869.66849 +/- 121    Q 131110.4817 +/- 338
29 of 36 observations 2020 Feb. 1-3 (47.8 hr); mean residual 1".761
Residuals in arcseconds: 
200130 703(2432-  612+)   200201 I41 4.13- 1.08+    200201 H01 1.80+ .110+
200130 703(2443-  620+)   200201 G96 .948- .768+    200201 I52 .285+ 1.98-
200130 703(2452-  619+)   200201 G96 .531- .139-    200201 I52 .491+ 1.77-
200130 I52(2511-  634+)   200201 H01 2.37+ .638+    200201 I52 .023- 1.75-
200130 I52(2512-  634+)   200201 I41 3.87- 1.88-    200201 G96 .786+ 1.36+
200130 I52(2512-  634+)   200201 I41 4.25- .939-    200201 G96 .694+ 1.10+
200130 I52(2513-  635+)   200201 H01 2.37+ .573+    200201 G96 .606+ 1.38+
200201 I41 4.32+ 1.01+    200201 I52 1.53- 1.33-    200201 G96 .658+ 1.32+
200201 I41 3.99+ 1.05+    200201 I52 1.33- 1.32-    200203 I41 .866- .932+
200201 G96 3.56+ .817-    200201 I52 1.57- 1.60-    200203 I41 .310+ .054-
200201 G96 .398+ .052-    200201 I52 1.64- .838-    200203 I41 .568- .199+
200201 I41 3.55- 1.31+    200201 H01 1.91+ .539+    200203 I41 1.23+ .479-

Ephemerides (geocentric):
Date (UTC) HH   RA              Dec         delta   r     elong  mag " sig PA
---- --------  --------------  -----------  -----  ------ -----  --- --------
2020 02 03 00  07 19 56.018   +12 09 43.32  114004 .98616 154.6 18.4  391 102
2020 02 03 01  07 26 22.823   +11 54 42.04  116894 .98619 156.0 18.5  351 103
2020 02 03 02  07 32 31.001   +11 39 52.40  119493 .98622 157.4 18.5  316 103
2020 02 03 03  07 38 23.504   +11 25 12.12  121813 .98624 158.6 18.5  285 104
2020 02 03 04  07 44 02.807   +11 10 38.92  123861 .98627 159.9 18.5  256 104
2020 02 03 05  07 49 31.023   +10 56 10.54  125646 .98629 161.0 18.5  230 105
2020 02 03 06  07 54 49.981   +10 41 44.73  127175 .98631 162.1 18.4  207 105
2020 02 03 07  08 00 01.291   +10 27 19.24  128451 .98633 163.2 18.4  185 105
2020 02 03 08  08 05 06.395   +10 12 51.80  129480 .98635 164.2 18.4  165 106
2020 02 03 09  08 10 06.602   +09 58 20.10  130265 .98636 165.1 18.4  147 106
2020 02 03 10  08 15 03.125   +09 43 41.77  130809 .98638 166.0 18.4  130 107
2020 02 03 11  08 19 57.108   +09 28 54.33  131112 .98639 166.9 18.3  114 107
2020 02 03 12  08 24 49.647   +09 13 55.17  131176 .98640 167.7 18.3 99.8 107
2020 02 03 13  08 29 41.818   +08 58 41.53  131001 .98640 168.4 18.3 86.5 107
2020 02 03 14  08 34 34.693   +08 43 10.41  130586 .98641 169.1 18.3 74.3 107
2020 02 03 15  08 39 29.366   +08 27 18.52  129930 .98641 169.6 18.2 63.1 107
2020 02 03 16  08 44 26.970   +08 11 02.28  129031 .98641 170.1 18.2 53.1 107
2020 02 03 17  08 49 28.707   +07 54 17.63  127885 .98641 170.4 18.2 44.1 107
2020 02 03 18  08 54 35.874   +07 37 00.04  126488 .98641 170.6 18.1 36.3 106
2020 02 03 19  08 59 49.893   +07 19 04.31  124835 .98640 170.6 18.1 29.7 104
2020 02 03 20  09 05 12.359   +07 00 24.43  122921 .98640 170.4 18.1 24.5 101
2020 02 03 21  09 10 45.082   +06 40 53.40  120738 .98639 170.1 18.0 20.9  97
2020 02 03 22  09 16 30.161   +06 20 22.95  118277 .98638 169.5 18.0 19.2  92
2020 02 03 23  09 22 30.064   +05 58 43.18  115528 .98636 168.8 18.0 19.7  88
2020 02 04 00  09 28 47.748   +05 35 42.08  112479 .98635 167.9 18.0 22.7  86
2020 02 04 01  09 35 26.815   +05 11 04.90  109116 .98633 166.8 18.0 28.7  87
2020 02 04 02  09 42 31.740   +04 44 33.22  105422 .98630 165.5 17.9 38.5  89
2020 02 04 03  09 50 08.195   +04 15 43.62  101377 .98628 163.9 17.9 53.3  91
2020 02 04 04  09 58 23.533   +03 44 05.77   96957 .98625 162.2 17.9 75.0  93
2020 02 04 05  10 07 27.532   +03 08 59.44   92133 .98622 160.3 17.8  106  96
2020 02 04 06  10 17 33.591   +02 29 29.90   86870 .98619 158.0 17.7  150  97
2020 02 04 07  10 29 00.724   +01 44 20.35   81123 .98615 155.3 17.7  214  99
2020 02 04 08  10 42 17.104   +00 51 38.92   74839 .98610 152.2 17.6  309 100
2020 02 04 09  10 58 06.784   -00 11 24.83   67947 .98605 148.3 17.5  455 101
2020 02 04 10  11 17 43.634   -01 29 25.44   60355 .98600 143.5 17.4  691 102
2020 02 04 11  11 43 23.776   -03 10 16.52   51943 .98593 137.2 17.2 1106 103
2020 02 04 12  12 19 54.054   -05 28 42.34   42557 .98586 128.1 17.1 1936 103
2020 02 04 13  13 19 34.991   -08 53 30.42   32051 .98577 113.2 16.9 3985 101
2020 02 04 14  15 25 51.010   -13 48 03.66   20754 .98568  82.3 17.1 184'  95
2020 02 04 15  20 53 35.446   -07 39 00.17   14214 .98561   9.5 30?? 422'  77
2020 02 04 16  01 35 41.059   +09 43 04.92   22288 .98566  70.7 17.9 181'  79
2020 02 04 17  03 27 57.499   +13 51 19.75   33578 .98575  98.0 17.5 5103  85
2020 02 04 18  04 25 50.295   +14 45 35.70   43938 .98583 111.8 17.6 3100  89
2020 02 04 19  05 02 34.716   +14 52 06.73   53195 .98591 120.5 17.8 2162  92
2020 02 04 20  05 28 50.598   +14 43 21.88   61503 .98598 126.7 17.9 1633  94
2020 02 04 21  05 49 03.721   +14 29 03.78   69013 .98604 131.5 18.0 1296  95
2020 02 04 22  06 05 25.489   +14 12 43.38   75839 .98611 135.3 18.1 1064  97
2020 02 04 23  06 19 09.083   +13 55 46.29   82071 .98616 138.5 18.2  894  98
2020 02 05 00  06 30 58.909   +13 38 49.33   87774 .98621 141.2 18.3  764  99
2020 02 05 01  06 41 23.710   +13 22 08.30   93004 .98626 143.7 18.3  661  99
2020 02 05 02  06 50 43.052   +13 05 49.40   97801 .98631 145.8 18.4  578 100
2020 02 05 03  06 59 10.804   +12 49 54.19  102200 .98635 147.8 18.4  509 101
2020 02 05 04  07 06 57.135   +12 34 22.02  106229 .98639 149.5 18.4  450 101
2020 02 05 05  07 14 09.710   +12 19 11.12  109912 .98643 151.2 18.5  399 102
2020 02 05 06  07 20 54.454   +12 04 19.25  113268 .98647 152.7 18.5  355 103
2020 02 05 07  07 27 16.043   +11 49 43.98  116312 .98650 154.1 18.5  317 103
2020 02 05 08  07 33 18.240   +11 35 22.82  119060 .98653 155.5 18.5  282 104
2020 02 05 09  07 39 04.129   +11 21 13.33  121523 .98656 156.8 18.5  251 104
2020 02 05 10  07 44 36.278   +11 07 13.11  123709 .98659 158.0 18.5  224 105
2020 02 05 11  07 49 56.862   +10 53 19.82  125629 .98661 159.1 18.5  198 105