"Pseudo-MPEC" for S510923

Created 2018 Mar 7 21:56:48 UT using Find_Orb

Click here for an explanation of pseudo-MPECs

This is almost certainly hardware from the SOLRAD 11 mission. One of the two SOLRAD 11 satellites has been found, and we now have a very secure orbit for it. SOLRAD 11B is "awaiting survey recovery". There are several candidate identifications for S510923; we'll probably never puzzle out which one is right until somebody goes up there with a net and catches it.

 
 Astrometry: 
     S510923 tC2016 04 01.36297012 12 36.520-02 51 15.93         18.3 GU     F51
     S510923 tC2016 04 01.37784112 14 47.573-03 29 07.23         18.3 GU     F51
     S510923 tC2016 04 01.39015612 16 35.266-04 00 25.38         18.4 GU     F51
     S510923  C2016 09 04.96140 19 34 24.12 -36 12 26.3          16.3 RqD0550Y00
     S510923  C2016 09 04.96240 19 34 40.30 -36 11 18.6          16.3 RqD0550Y00
     S510923  C2016 09 04.96346 19 34 57.36 -36 10 04.3          16.2 RqD0550Y00
     S510923 tC2016 09 05.01043 19 47 26.09 -35 07 52.5          15.9 RqD0550Y00
     S510923  C2016 09 05.01071 19 47 30.47 -35 07 27.1          15.5 RqD0550Y00
     S510923  C2016 09 05.01153 19 47 43.31 -35 06 16.7          15.6 RqD0550Y00
     S510923  C2016 09 05.01189 19 47 48.95 -35 05 44.5          15.6 RqD0550Y00
     S510923 tC2016 09 05.01222 19 47 54.20 -35 05 14.2          15.9 RqD0550Y00
     S510923  C2016 09 05.01355 19 48 15.01 -35 03 17.9          15.4 RqD0550Y00
     S510923 tC2016 09 05.01383 19 48 19.44 -35 02 51.7          15.9 RqD0550Y00
     S510923  C2016 09 05.08700 20 07 23.12 -32 58 57.7          15.3 RqD0550Y00
     S510923  C2016 09 05.08725 20 07 27.03 -32 58 29.3          15.2 RqD0550Y00
     S510923  C2016 09 05.08836 20 07 44.27 -32 56 23.2          15.8 RqD0550Y00
     S510923  C2016 09 05.08957 20 08 03.21 -32 54 05.8          15.2 RqD0550Y00
     S510923  C2016 09 05.18283 20 32 36.16 -29 38 21.0          15.1 RqD0550Y00
     S510923  C2016 09 05.18315 20 32 41.44 -29 37 36.8          15.5 RqD0550Y00
     S510923  C2016 09 05.18346 20 32 46.26 -29 36 56.2          15.5 RqD0550Y00
     S510923 KC2016 09 06.09484000 31 43.089+08 18 48.89         17.7 RtD0550Y28
     S510923 KC2016 09 06.09513000 31 46.011+08 19 37.33         17.9 RtD0550Y28
     S510923 KC2016 09 06.09678000 32 02.523+08 24 09.56         18.0 RtD0550Y28
     S510923 KC2016 09 06.09707100 32 05.440+08 24 57.90         17.8 RtD0550Y28
     S510923 KC2016 10 02.90297700 46 50.41 +08 49 38.2          17.7 RqD0551J95
     S510923 KC2016 10 02.90611600 47 27.14 +08 57 59.9          18.2 RqD0551J95
     S510923 KC2016 10 02.92096400 50 20.38 +09 37 25.6          18.2 RqD0551J95
     S510923 KC2016 10 02.92374100 50 52.71 +09 44 46.8          17.6 RqD0551J95
     S510923 KC2016 10 18.92368900 39 31.35 +08 11 06.5          17.9 RqD0551J95
     S510923 KC2016 10 18.92720700 40 10.61 +08 20 22.0          18.3 RqD0551J95
     S510923 KC2016 10 18.93063900 40 48.96 +08 29 22.4          18.6 RqD0551J95
     S510923 tC2017 07 18.16677 22 59 47.52 -05 00 21.1          13.5 RqD0557Y00
     S510923 tC2017 07 18.16791 22 59 59.72 -04 57 18.5          13.5 RqD0557Y00
     S510923 tC2017 07 18.16906 23 00 12.13 -04 54 12.4          13.5 RqD0557Y00
     S510923 tC2017 08 03.14463 22 42 44.58 -07 40 10.7          15.4 RqD0557Y00
     S510923 tC2017 08 03.14600 22 42 59.04 -07 36 32.1          15.8 RqD0557Y00
     S510923 tC2017 08 03.14705 22 43 10.03 -07 33 43.3          15.7 RqD0557Y00
     S510923  C2018 03 07JcAstrometry/QPmZrGGvp,mbSi,?9yQqj3]41anOptZB6[:]\jTI41
     S510923  C2018 03 07h^puMofF7F4t4y5)N,W.`yyA:\W*6yB-uIcji?je$TTXj],Pno6nI41
     S510923  C2018 03 07n2bPiFAii(8Eb(eRbredacted;P1=*i-AO76DM^l9Fw)lL5j(ERdI41
     S510923  C2018 03 070^L;oiy^PA4g12oI%.ok;t=Qta3s9w*xseeIyGmx,Cste*,4SevgI41
     S510923  C2018 03 07h;_I5G\/:Ym8\l`OjFMd@lHVl23D*O*S+i'EN89@RheRo)La+RA;I41
     S510923  C2018 03 07xxNfBX;f31/o12C#KdUm)-c2Y$qe3dxaPtsE!_2fo'Q[KT`NEOCPI41

Station data:
(F51) Pan-STARRS 1, Haleakala  (N20.707235 W156.255910)  US/Hawaii.
   Observers B. Gibson, T. Goggia, N. Primak, A. Schultz, M. Willman.
   Measurer M. Micheli. 1.8-m Ritchey-Chrétien + CCD.
(I41) Palomar Mountain--ZTF  (N33.357340 W116.859780)  US/California. 1.2-m
   f/2.44 Oschin Schmidt + CCD.
(J95) Great Shefford  (N51.474970 W1.447000)  UK.  Observer P. Birtwhistle.
   0.40-m f/6.0 Schmidt-Cassegrain + CCD.
(Y00) SONEAR Observatory, Oliveira  (S20.715082 W44.784960)  Brazil.
   Observers C. Jacques, E. Pimentel, J. Barros. Measurer C. Jacques. 0.28-m
   f/2.2 astrograph + CCD.
(Y28) OASI, Nova Itacuruba  (S8.788707 W38.687400)  Brazil.  Observers F.
   Monteiro, H. Medeiros, P. Arcoverde, D. Lazzaro, R. Souza, T. Rodrigues.
   Measurers M. Micheli, F. Monteiro. 1.0-m f/7 reflector + CCD.

Orbital elements:  S510923
   Perigee 2016 Oct 18.041209 +/- 0.000158 TT =  0:59:20 (JD 2457679.541209)
Epoch 2016 Oct 18.0 TT; AMR 0.018392 +/- 0.000169 m2/kg      Gray
M 357.21931 +/- 0.010               (body frame)
n  67.47804093 +/- 1.84e-6          Peri.  313.96209 +/- 0.010
a128971.929 +/- 0.00234             Node   267.85651 +/- 0.00019
e   0.0306382 +/- 2.95e-6           Incl.   38.31232 +/- 0.00008
P7682.35m/5.335d           H 30.8   G  0.15   U  3.9
q 125020.451 +/- 0.379    Q 132923.407 +/- 0.383
From 43 observations 2016 Apr. 1-2018 Mar. 7; mean residual 3".514
Residuals in arcseconds: 
160401 F51 1.75+ 1.32-    160905 Y00 3.52- 1.38-    161018 J95 .148- .736-
160401 F51 3.42+ 3.26-    160905 Y00 2.80- 1.66-    170718 Y00 7.66- 6.17-
160401 F51 2.30+ 1.79-    160905 Y00 2.63- 1.25-    170718 Y00 7.97- 6.52-
160904 Y00 5.46- .164+    160905 Y00 .847- .639-    170718 Y00 6.49- 5.09-
160904 Y00 5.27- 2.21-    160905 Y00 2.97- 2.28-    170803 Y00 5.20+ 3.49+
160904 Y00 6.02- 2.61-    160906 Y28 7.34- 5.12-    170803 Y00 5.61+ 2.90+
160905 Y00 2.25- 1.18-    160906 Y28 7.10- 4.63-    170803 Y00 4.70+ 3.60+
160905 Y00 2.64- .436-    160906 Y28 7.20- 5.18-    180307 I41 1.97- 2.15+
160905 Y00 3.61- 2.41-    160906 Y28 7.11- 4.93-    180307 I41 3.01- 2.20+
160905 Y00 3.98- 2.06-    161002 J95 1.54+ .761+    180307 I41 .324- .306+
160905 Y00 3.34- 1.00-    161002 J95 .990+ 1.08+    180307 I41 1.48- .638+
160905 Y00 4.94- 2.93-    161002 J95 .463+ .874+    180307 I41 .644- .323-
160905 Y00 4.66- 1.70-    161002 J95 .861+ .637+    180307 I41 2.50- 1.19+
160905 Y00 2.62- 1.64-    161018 J95 .100+ .104+
160905 Y00 2.51- 1.55-    161018 J95 .383- .071+

Ephemerides (geocentric):
Date (UTC) HH   RA              Dec         delta   r     elong  mag " sig PA
---- -- -- --  ------------   ------------  ------ ------ -----  --- ---- ---
2018 03 07 00  07 54 40.915   +29 05 36.24  132480 0.9928 128.5 17.4  4.0 115
2018 03 07 01  08 05 44.271   +28 00 18.15  132639 0.9928 131.1 17.4  4.1 116
2018 03 07 02  08 16 32.530   +26 51 54.90  132789 0.9929 133.7 17.3  4.1 117
2018 03 07 03  08 27 06.186   +25 40 40.18  132931 0.9929 136.3 17.2  4.2 118
2018 03 07 04  08 37 25.824   +24 26 47.16  133064 0.9929 138.9 17.2  4.2 119
2018 03 07 05  08 47 32.104   +23 10 28.41  133187 0.9930 141.4 17.1  4.3 120
2018 03 07 06  08 57 25.740   +21 51 55.88  133301 0.9930 144.0 17.0  4.3 121
2018 03 07 07  09 07 07.492   +20 31 20.95  133406 0.9931 146.6 16.9  4.4 122
2018 03 07 08  09 16 38.154   +19 08 54.40  133500 0.9931 149.1 16.9  4.4 123
2018 03 07 09  09 25 58.539   +17 44 46.44  133585 0.9931 151.7 16.8  4.5 124
2018 03 07 10  09 35 09.479   +16 19 06.76  133659 0.9931 154.2 16.7  4.6 124
2018 03 07 11  09 44 11.812   +14 52 04.53  133723 0.9932 156.7 16.7  4.6 125
2018 03 07 12  09 53 06.382   +13 23 48.48  133776 0.9932 159.2 16.6  4.7 125
2018 03 07 13  10 01 54.034   +11 54 26.91  133819 0.9932 161.7 16.5  4.8 126
2018 03 07 14  10 10 35.609   +10 24 07.74  133851 0.9933 164.2 16.4  4.8 126
2018 03 07 15  10 19 11.948   +08 52 58.57  133872 0.9933 166.6 16.3  4.9 127
2018 03 07 16  10 27 43.887   +07 21 06.73  133883 0.9933 169.0 16.2  5.0 127
2018 03 07 17  10 36 12.259   +05 48 39.30  133883 0.9933 171.2 16.1  5.0 127
2018 03 07 18  10 44 37.893   +04 15 43.16  133871 0.9933 173.2 16.1  5.1 127
2018 03 07 19  10 53 01.615   +02 42 25.08  133850 0.9933 174.7 16.0  5.2 127
2018 03 07 20  11 01 24.251   +01 08 51.71  133817 0.9933 175.2 16.0  5.2 127
2018 03 07 21  11 09 46.626   -00 24 50.33  133774 0.9934 174.4 16.0  5.3 127
2018 03 07 22  11 18 09.569   -01 58 34.44  133720 0.9934 172.8 16.1  5.4 127
2018 03 07 23  11 26 33.908   -03 32 13.94  133656 0.9934 170.7 16.2  5.5 127
2018 03 08 00  11 35 00.478   -05 05 42.08  133582 0.9934 168.4 16.3  5.5 127
2018 03 08 01  11 43 30.121   -06 38 51.96  133497 0.9934 166.0 16.3  5.6 127
2018 03 08 02  11 52 03.683   -08 11 36.47  133402 0.9934 163.5 16.4  5.7 126
2018 03 08 03  12 00 42.021   -09 43 48.26  133298 0.9934 161.0 16.5  5.7 126
2018 03 08 04  12 09 26.000   -11 15 19.70  133184 0.9934 158.5 16.6  5.8 125
2018 03 08 05  12 18 16.492   -12 46 02.81  133060 0.9934 156.0 16.7  5.9 125
2018 03 08 06  12 27 14.379   -14 15 49.20  132928 0.9934 153.4 16.7  6.0 124
2018 03 08 07  12 36 20.549   -15 44 30.04  132787 0.9934 150.9 16.8  6.0 124
2018 03 08 08  12 45 35.894   -17 11 56.01  132637 0.9933 148.3 16.9  6.1 123
2018 03 08 09  12 55 01.306   -18 37 57.24  132479 0.9933 145.7 17.0  6.2 122
2018 03 08 10  13 04 37.674   -20 02 23.28  132313 0.9933 143.1 17.0  6.2 121
2018 03 08 11  13 14 25.876   -21 25 03.03  132140 0.9933 140.5 17.1  6.3 121
2018 03 08 12  13 24 26.770   -22 45 44.74  131959 0.9933 137.9 17.2  6.3 120
2018 03 08 13  13 34 41.183   -24 04 15.96  131772 0.9933 135.3 17.2  6.4 118
2018 03 08 14  13 45 09.902   -25 20 23.53  131579 0.9932 132.6 17.3  6.5 117
2018 03 08 15  13 55 53.653   -26 33 53.57  131380 0.9932 130.0 17.4  6.5 116
2018 03 08 16  14 06 53.087   -27 44 31.52  131175 0.9932 127.3 17.4  6.6 115
2018 03 08 17  14 18 08.758   -28 52 02.14  130965 0.9932 124.6 17.5  6.6 113
2018 03 08 18  14 29 41.101   -29 56 09.57  130751 0.9932 122.0 17.6  6.7 112
2018 03 08 19  14 41 30.404   -30 56 37.46  130533 0.9931 119.3 17.7  6.7 111
2018 03 08 20  14 53 36.788   -31 53 09.03  130312 0.9931 116.6 17.7  6.7 109
2018 03 08 21  15 06 00.176   -32 45 27.28  130088 0.9931 113.9 17.8  6.8 107
2018 03 08 22  15 18 40.270   -33 33 15.15  129861 0.9931 111.2 17.9  6.8 105
2018 03 08 23  15 31 36.529   -34 16 15.73  129633 0.9930 108.4 18.0  6.8 104
2018 03 09 00  15 44 48.152   -34 54 12.59  129403 0.9930 105.7 18.1  6.9 102
2018 03 09 01  15 58 14.067   -35 26 49.97  129173 0.9930 103.0 18.2  6.9 100
2018 03 09 02  16 11 52.930   -35 53 53.19  128942 0.9929 100.2 18.3  6.9  98
2018 03 09 03  16 25 43.135   -36 15 08.90  128712 0.9929  97.4 18.4  6.9  96
2018 03 09 04  16 39 42.832   -36 30 25.40  128483 0.9929  94.7 18.5  7.0  94
2018 03 09 05  16 53 49.961   -36 39 32.96  128255 0.9928  91.9 18.6  7.0  91
2018 03 09 06  17 08 02.296   -36 42 24.05  128030 0.9928  89.1 18.7  7.0  89
2018 03 09 07  17 22 17.499   -36 38 53.55  127807 0.9928  86.3 18.8  7.0  87
2018 03 09 08  17 36 33.175   -36 28 58.88  127587 0.9928  83.5 18.9  7.0  85
2018 03 09 09  17 50 46.942   -36 12 40.08  127372 0.9927  80.6 19.0  7.0  83
2018 03 09 10  18 04 56.488   -35 49 59.78  127160 0.9927  77.8 19.2  6.9  81
2018 03 09 11  18 18 59.633   -35 21 03.11  126954 0.9927  75.0 19.3  6.9  79