"Pseudo-MPEC" for 2018-045D = NORAD 43473 = Queqiao booster

Created 2018 May 28 17:23:31 UT using Find_Orb

Click here for an explanation of pseudo-MPECs

Click here for the pseudo-MPEC for the Queqiao payload

Click here for a more recent pseudo-MPEC for this booster, based on further observations of this object.

TLEs are available for this and other objects on these pages. Also, you can get ephems for this object from the Minor Planet Center's DASO Page.

With additional data, we have a well-defined lunar miss distance of 11931 +/- 1 km, as well as a good post-flyby geocentric orbit.. The new observations don't link well with the old observations; it's safe to assume that the booster released some leftover propellant. I won't be surprised if further observations show that we have to reject even more of the early observations.

You can click here for customized ephemerides for Queqiao, its booster, and some other objects, courtesy of the Minor Planet Center.

 
 Astrometry: 
     ZK1AE47  C2018 05 21.19239 11 33 48.28 -18 03 51.7         x13.0 GU     703
     ZK1AE47  C2018 05 21.19772 11 34 20.49 -17 54 51.8         x12.9 GU     703
     ZK1AE47  C2018 05 21.20304 11 34 52.20 -17 46 02.4         x13.0 GU     703
     ZK1AE47  C2018 05 21.20837 11 35 23.56 -17 37 21.8         x13.0 GU     703
     ZK1AE47 KC2018 05 21.92391112 25 39.65 -10 57 58.6         x15.3 G      J95
     ZK1AE47 KC2018 05 21.92510612 25 40.07 -10 57 35.1         x15.4 G      J95
     ZK1AE47 KC2018 05 21.92556612 25 40.24 -10 57 26.3         x15.3 G      J95
     ZK1AE47 KC2018 05 21.92601712 25 40.41 -10 57 17.3         x15.2 G      J95
     A106ZsZ  C2018 05 22)-Astrometryc2Y$qe3dxaPtsE!_2fo'Q[KT`icSrJp^]O/IOBg'T08
     A106ZsZ  C2018 05 22]q!1pVp(C?0NT5):$redacted;FHPqhTGwWvtD#1oYBe5mHXf2aAT08
     A106ZsZ  C2018 05 22Gj5%j]/aVQ#(MTr14Aj0-#U8jAy1hCFGsee4^VO:aEqisKFk]42'T08
     A106ZsZ  C2018 05 22DsaH(8IS#kQ#8?aHnU/:My3REXiYDqWX%2qJ@NoqR.6mV*#NEOCPT08
     queqia1  C2018 05 22.69634 12 42 42.68 -08 13 37.8          16.1 G      C42
     queqia1  C2018 05 22.69795 12 42 42.20 -08 13 21.1          16.1 G      C42
     queqia1  C2018 05 22.69951 12 42 41.74 -08 13 04.4          16.0 G      C42
     queqia1  C2018 05 22.70106 12 42 41.32 -08 12 48.9          16.2 G      C42
     queqia1  C2018 05 22.70267 12 42 40.89 -08 12 32.4          16.0 G      C42
     queqia1  C2018 05 22.70426 12 42 40.49 -08 12 15.8          16.0 G      C42
     queqia1  C2018 05 22.70588 12 42 40.05 -08 11 58.0          16.0 G      C42
     queqia1  C2018 05 22.70750 12 42 39.63 -08 11 41.8          16.0 G      C42
     queqia1  C2018 05 22.70913 12 42 39.27 -08 11 24.7          16.1 G      C42
     queqia1  C2018 05 22.71073 12 42 38.89 -08 11 08.2          16.0 G      C42
     ZK1AE47 KC2018 05 22.89616112 46 59.70 -07 52 22.6          16.1 GV     J95
     ZK1AE47 KC2018 05 22.89682812 46 59.48 -07 52 17.0          16.3 GV     J95
     ZK1AE47 KC2018 05 22.89750712 46 59.27 -07 52 11.4          16.2 GV     J95
     ZK1AE47 KC2018 05 22.89818412 46 59.09 -07 52 05.4          16.2 GV     J95
2018-045D    KC2018 05 23.84140 12 58 50.51 -06 02 41.2          16.9 Vq     C95
2018-045D    KC2018 05 23.85102 12 58 45.01 -06 01 47.6          16.6 Vq     C95
2018-045D    KC2018 05 23.86064 12 58 39.50 -06 00 52.9          17.0 Vq     C95
2018-045D    KC2018 05 23.87026 12 58 34.04 -05 59 57.1          17.0 Vq     C95
2018-045D    KC2018 05 23.87989 12 58 28.61 -05 59 00.8          16.9 Vq     C95
2018-045D    KC2018 05 23.88950 12 58 23.34 -05 58 03.2          17.1 Vq     C95
2018-045D    KC2018 05 27.94147413 58 07.37 +01 27 28.2          15.9 GV     J95
2018-045D    KC2018 05 27.94278013 58 08.90 +01 27 40.0          16.0 GV     J95
2018-045D    KC2018 05 27.94403313 58 10.41 +01 27 51.3          15.9 GV     J95

Station data:
(703) Catalina Sky Survey  (N32.417006 W110.732640)  US/Arizona.  Observer G.
   J. Leonard. Measurers B. M. Africano, E. J. Christensen, D. C. Fuls, A. R.
   Gibbs, A. D. Grauer, H. Groeller, J. A. Johnson, R. A. Kowalski, S. M.
   Larson, G. J. Leonard, R. L. Seaman, F. C. Shelly. 0.68-m Schmidt + 10K
   CCD.
(C42) Xingming Observatory,  Mt. Nanshan  (N43.471021 E87.177800)  China.
   Observers H. Tan, X. Gao, P. Sun. Measurers Z. Xu, P. Sun, M.-T. Hui.
   0.5-m f/4 reflector + CCD.
(C95) SATINO Remote Observatory, Haute Provence  (N43.932042 E5.712390)
   France.  Observer J. Jahn. 0.60-m f/3.2 Newton + CCD.
(J95) Great Shefford  (N51.474969 W1.447003)  UK.  Observer P. Birtwhistle.
   0.40-m f/6.0 Schmidt-Cassegrain + CCD.
(T08) ATLAS-MLO, Mauna Loa  (N19.535772 W155.576400)  US/Hawaii.

Orbital elements (geocentric):  2018-045D = NORAD 43473 = Queqiao booster
   Perigee 2018 May 29.379890 +/- 6.17e-5 TT =  9:07:02 (JD 2458267.879890)
Epoch 2018 May 28.0 TT = JDT 2458266.5                        Gray
M 322.62239 +/- 0.0016              (J2000 equator)
n  27.08737893 +/- 8.97e-5          Peri.  165.17331 +/- 0.00017
a237005.732 +/- 0.524               Node   200.19469 +/- 0.00031
e   0.9056983 +/- 3.76e-6           Incl.   15.40729 +/- 0.00042
P  13.29d                  H 28.3   G  0.15   U  6.5
q 22350.0295 +/- 0.912    Q 451661.435 +/- 1.04
23 of 35 observations 2018 May 22-27; mean residual 0".446

Orbital elements (lunicentric):  2018-045D = NORAD 43473 = Queqiao booster
   Perilune 2018 May 25.586655 +/- 1.74e-5 TT = 14:04:47 (JD 2458264.086655)
Epoch 2018 May 25.5 TT = JDT 2458264.0                        Gray
q 11931.2880 +/- 0.928              (J2000 ecliptic)
H   28.3  G 0.15                    Peri.  351.06767 +/- 0.0043
                                    Node   173.28636 +/- 0.0045
e   2.8937239 +/- 0.000121          Incl.  171.87030 +/- 0.00032
23 of 35 observations 2018 May 22-27; mean residual 0".446

Orbital elements (geocentric,  shortly after launch):  2018-045D = NORAD 43473 = Queqiao booster
   Perigee 2018 May 20.912543 +/- 0.00012 TT = 21:54:03 (JD 2458259.412543)
Epoch 2018 May 22.0 TT = JDT 2458260.5                        Gray
M  36.14764 +/- 0.010               (J2000 equator)
n  33.24054512 +/- 0.0106           Peri.  174.65323 +/- 0.0024
a206771.850 +/- 43.9                Node   204.66325 +/- 0.00007
e   0.9682628 +/- 5.68e-6           Incl.   28.46126 +/- 0.0006
P  10.83d                  H 28.1   G  0.15   U  9.7
q 6562.34720 +/- 1.93    Q 406981.353 +/- 86.2
22 of 26 observations 2018 May 21-22 (23.4 hr); mean residual 0".230

The object had some non-gravitational forces acting on it in the days after launch, probably remaining fuel boiling off. The final set of elements above is based on observations as the object went from the earth to the moon.

Residuals in arcseconds: 
180521 703( 112+ 16.1+)   180522 C42 .917+ .729-    180522 J95 .434- .040-
180521 703( 108+ 12.4+)   180522 C42 .749+ .646-    180522 J95 .178- .227+
180521 703( 105+ 10.9+)   180522 C42 .498+ .073-    180523 C95 .182+ .251+
180521 703( 103+ 10.6+)   180522 C42 .634+ .621-    180523 C95 .257+ .085+
180521 J95(8.97+ 3.85-)   180522 C42 .694+ .816-    180523 C95 .297+ .057+
180521 J95(8.73+ 3.58-)   180522 C42 .941+ .728-    180523 C95 .579+ .177+
180521 J95(8.74+ 3.73-)   180522 C42 .526+ .222+    180523 C95 .277+ .199-
180521 J95(8.78+ 3.49-)   180522 C42 .219+ .453-    180523 C95 .476+ .073-
180522 T08(2.38+ 2.10-)   180522 C42 .646+ .357-    180527 J95 .197+ .184-
180522 T08(2.48+ 1.96-)   180522 C42 .477+ .572-    180527 J95 .190- .014+
180522 T08(2.37+ 1.60-)   180522 J95 .098+ .144+    180527 J95 5.8m- .178+
180522 T08(2.23+ 1.81-)   180522 J95 .264- .105+

Ephemerides (geocentric):
Date (UTC) HH   RA              Dec         delta  elong  mag " sig PA
---- -- -- --  -------------   -----------  ------ -----  --- ---- ---
2018 05 27 00  13 29 12.512   +00 30 05.53  319154 134.3 16.7  .47 117
2018 05 27 01  13 30 12.486   +00 34 39.42  316200 134.4 16.7  .46 116
2018 05 27 02  13 31 13.737   +00 39 16.96  313204 134.6 16.7  .45 116
2018 05 27 03  13 32 16.313   +00 43 58.42  310163 134.7 16.6  .44 115
2018 05 27 04  13 33 20.264   +00 48 44.05  307077 134.8 16.6  .43 115
2018 05 27 05  13 34 25.644   +00 53 34.13  303946 135.0 16.6  .42 115
2018 05 27 06  13 35 32.511   +00 58 28.95  300768 135.2 16.6  .41 115
2018 05 27 07  13 36 40.929   +01 03 28.80  297542 135.3 16.5  .40 114
2018 05 27 08  13 37 50.966   +01 08 33.99  294267 135.5 16.5  .38 114
2018 05 27 09  13 39 02.695   +01 13 44.84  290942 135.6 16.5  .37 114
2018 05 27 10  13 40 16.195   +01 19 01.71  287567 135.8 16.5  .35 114
2018 05 27 11  13 41 31.552   +01 24 24.95  284139 136.0 16.4  .34 114
2018 05 27 12  13 42 48.858   +01 29 54.95  280658 136.2 16.4  .32 115
2018 05 27 13  13 44 08.212   +01 35 32.12  277122 136.3 16.4  .30 115
2018 05 27 14  13 45 29.723   +01 41 16.91  273530 136.5 16.3  .28 116
2018 05 27 15  13 46 53.507   +01 47 09.77  269881 136.7 16.3  .26 117
2018 05 27 16  13 48 19.691   +01 53 11.22  266173 136.9 16.3  .24 119
2018 05 27 17  13 49 48.413   +01 59 21.78  262405 137.1 16.2  .21 121
2018 05 27 18  13 51 19.825   +02 05 42.05  258575 137.4 16.2  .18 125
2018 05 27 19  13 52 54.088   +02 12 12.66  254681 137.6 16.1  .16 130
2018 05 27 20  13 54 31.384   +02 18 54.27  250721 137.8 16.1  .13 138
2018 05 27 21  13 56 11.908   +02 25 47.63  246695 138.0 16.1  .11 152
2018 05 27 22  13 57 55.876   +02 32 53.55  242598 138.3 16.0  .09 174
2018 05 27 23  13 59 43.526   +02 40 12.91  238430 138.5 16.0  .10  21
2018 05 28 00  14 01 35.121   +02 47 46.66  234189 138.8 15.9  .12  43
2018 05 28 01  14 03 30.950   +02 55 35.86  229871 139.0 15.9  .16  57
2018 05 28 02  14 05 31.338   +03 03 41.68  225473 139.3 15.8  .22  65
2018 05 28 03  14 07 36.643   +03 12 05.40  220995 139.6 15.8  .28  71
2018 05 28 04  14 09 47.267   +03 20 48.44  216431 139.9 15.7  .35  74
2018 05 28 05  14 12 03.663   +03 29 52.40  211780 140.2 15.7  .43  77
2018 05 28 06  14 14 26.340   +03 39 19.04  207037 140.5 15.6  .52  78
2018 05 28 07  14 16 55.873   +03 49 10.34  202199 140.8 15.6  .61  80
2018 05 28 08  14 19 32.918   +03 59 28.54  197262 141.2 15.5  .73  80
2018 05 28 09  14 22 18.225   +04 10 16.16  192222 141.5 15.4  .85  81
2018 05 28 10  14 25 12.655   +04 21 36.07  187074 141.9 15.4  1.0  81
2018 05 28 11  14 28 17.202   +04 33 31.54  181812 142.3 15.3  1.2  82
2018 05 28 12  14 31 33.027   +04 46 06.33  176431 142.6 15.2  1.3  82
2018 05 28 13  14 35 01.488   +04 59 24.77  170924 143.1 15.1  1.5  82
2018 05 28 14  14 38 44.189   +05 13 31.90  165286 143.5 15.0  1.8  82
2018 05 28 15  14 42 43.041   +05 28 33.60  159508 143.9 14.9  2.1  82
2018 05 28 16  14 47 00.344   +05 44 36.79  153582 144.4 14.9  2.4  82
2018 05 28 17  14 51 38.890   +06 01 49.70  147498 144.8 14.8  2.8  82
2018 05 28 18  14 56 42.116   +06 20 22.17  141246 145.3 14.6  3.2  82
2018 05 28 19  15 02 14.301   +06 40 26.07  134813 145.8 14.5  3.8  82
2018 05 28 20  15 08 20.858   +07 02 15.86  128187 146.3 14.4  4.4  82
2018 05 28 21  15 15 08.750   +07 26 09.36  121352 146.8 14.3  5.2  82
2018 05 28 22  15 22 47.110   +07 52 28.71  114290 147.2 14.1  6.2  82
2018 05 28 23  15 31 28.196   +08 21 41.76  106981 147.6 14.0  7.5  82
2018 05 29 00  15 41 28.896   +08 54 23.75   99401 148.0 13.8  9.1  82
2018 05 29 01  15 53 13.233   +09 31 19.56   91523 148.1 13.6 11.3  82
2018 05 29 02  16 07 16.700   +10 13 25.89   83317 148.0 13.4 14.4  82
2018 05 29 03  16 24 34.220   +11 01 51.78   74751 147.4 13.2 18.7  82
2018 05 29 04  16 46 35.781   +11 57 50.59   65790 146.0 13.0 25.3  83
2018 05 29 05  17 15 59.675   +13 01 56.06   56417 143.0 12.7 36.1  84
2018 05 29 06  17 57 49.407   +14 10 48.26   46667 137.4 12.5 55.2  86
2018 05 29 07  19 02 42.101   +15 02 41.82   36770 126.4 12.3 93.0  90
2018 05 29 08  20 53 06.438   +13 53 05.60   27683 105.0 12.3  171  96
2018 05 29 09  23 53 21.986   +05 37 56.05   22588  67.1 13.6  268 104
2018 05 29 10  03 05 01.247   -06 50 36.08   25577  34.4 17??  217 103
2018 05 29 11  05 10 44.250   -12 51 16.11   33987  36.3 17??  128  97
2018 05 29 12  06 25 04.058   -14 40 42.45   43809  46.9 16?? 79.3  93
2018 05 29 13  07 12 28.679   -15 04 20.82   53642  55.2 16?? 54.6  89
2018 05 29 14  07 45 24.412   -14 59 03.76   63132  61.4 16.2 40.5  86
2018 05 29 15  08 09 49.754   -14 43 40.20   72210  66.1 16.2 31.8  84
2018 05 29 16  08 28 50.588   -14 24 59.38   80887  69.8 16.2 26.0  82
2018 05 29 17  08 44 11.683   -14 05 41.24   89193  72.9 16.2 21.9  81
2018 05 29 18  08 56 56.435   -13 46 50.32   97161  75.4 16.3 18.8  79
2018 05 29 19  09 07 45.492   -13 28 51.76  104822  77.6 16.3 16.5  78
2018 05 29 20  09 17 06.181   -13 11 53.59  112205  79.5 16.4 14.7  77
2018 05 29 21  09 25 17.594   -12 55 56.28  119334  81.2 16.4 13.2  76
2018 05 29 22  09 32 33.514   -12 40 57.03  126230  82.6 16.5 12.0  75
2018 05 29 23  09 39 04.161   -12 26 51.74  132911  84.0 16.5 11.0  74
2018 05 30 00  09 44 57.295   -12 13 35.99  139394  85.2 16.6 10.2  73
2018 05 30 01  09 50 18.923   -12 01 05.42  145692  86.2 16.6  9.5  72
2018 05 30 02  09 55 13.782   -11 49 15.98  151818  87.2 16.7  8.9  72
2018 05 30 03  09 59 45.658   -11 38 03.95  157783  88.1 16.7  8.3  71
2018 05 30 04  10 03 57.625   -11 27 26.01  163596  89.0 16.7  7.8  70
2018 05 30 05  10 07 52.204   -11 17 19.15  169267  89.8 16.8  7.4  70
2018 05 30 06  10 11 31.485   -11 07 40.70  174802  90.5 16.8  7.0  69
2018 05 30 07  10 14 57.222   -10 58 28.28  180210  91.2 16.9  6.7  68
2018 05 30 08  10 18 10.894   -10 49 39.76  185496  91.8 16.9  6.4  68
2018 05 30 09  10 21 13.762   -10 41 13.23  190666  92.4 16.9  6.1  67
2018 05 30 10  10 24 06.908   -10 33 06.99  195726  93.0 17.0  5.8  67
2018 05 30 11  10 26 51.264   -10 25 19.52  200680  93.6 17.0  5.6  66
2018 05 30 12  10 29 27.643   -10 17 49.43  205533  94.1 17.0  5.4  65
2018 05 30 13  10 31 56.753   -10 10 35.49  210289  94.6 17.1  5.2  65
2018 05 30 14  10 34 19.217   -10 03 36.58  214952  95.0 17.1  5.0  64
2018 05 30 15  10 36 35.583   -09 56 51.67  219524  95.5 17.1  4.8  64
2018 05 30 16  10 38 46.339   -09 50 19.85  224010  95.9 17.2  4.7  63
2018 05 30 17  10 40 51.918   -09 44 00.28  228413  96.3 17.2  4.5  63
2018 05 30 18  10 42 52.707   -09 37 52.18  232735  96.7 17.2  4.4  62
2018 05 30 19  10 44 49.054   -09 31 54.86  236979  97.1 17.2  4.3  62
2018 05 30 20  10 46 41.272   -09 26 07.68  241147  97.4 17.3  4.2  62
2018 05 30 21  10 48 29.642   -09 20 30.05  245242  97.8 17.3  4.0  61
2018 05 30 22  10 50 14.420   -09 15 01.42  249265  98.1 17.3  3.9  61
2018 05 30 23  10 51 55.838   -09 09 41.29  253220  98.4 17.3  3.8  60
2018 05 31 00  10 53 34.107   -09 04 29.20  257107  98.7 17.4  3.7  60
2018 05 31 01  10 55 09.422   -08 59 24.72  260929  99.0 17.4  3.6  59
2018 05 31 02  10 56 41.957   -08 54 27.46  264687  99.3 17.4  3.6  59
2018 05 31 03  10 58 11.876   -08 49 37.05  268383  99.6 17.4  3.5  59