"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