"Pseudo-MPEC" for S510923
Created 2020 Jan 4 17:32:48 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 57.6 15.3 RqD0550Y00
S510923 C2016 09 05.08725 20 07 27.03 -32 58 29.2 15.2 RqD0550Y00
S510923 C2016 09 05.08836 20 07 44.27 -32 56 23.1 15.8 RqD0550Y00
S510923 C2016 09 05.08957 20 08 03.21 -32 54 05.7 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 25.7 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 21.0 13.5 RqD0557Y00
S510923 tC2017 07 18.16791 22 59 59.72 -04 57 18.4 13.5 RqD0557Y00
S510923 tC2017 07 18.16906 23 00 12.13 -04 54 12.3 13.5 RqD0557Y00
S510923 tC2017 08 03.14463 22 42 44.58 -07 40 10.6 15.4 RqD0557Y00
S510923 tC2017 08 03.14600 22 42 59.04 -07 36 32.0 15.8 RqD0557Y00
S510923 tC2017 08 03.14705 22 43 10.03 -07 33 43.3 15.7 RqD0557Y00
ZTF00HT C2018 03 07.25153 08 57 05.32 +21 14 42.8 15.30RUNEOCPI41
ZTF00HT C2018 03 07.25188 08 57 09.04 +21 14 00.3 15.30RUNEOCPI41
ZTF00HT C2018 03 07.25301 08 57 21.48 +21 11 40.9 15.35RUNEOCPI41
ZTF00HT C2018 03 07.25336 08 57 25.19 +21 10 58.6 15.35RUNEOCPI41
ZTF00HT C2018 03 07.27328 09 01 00.44 +20 30 00.1 UNEOCPI41
ZTF00HT C2018 03 07.27363 09 01 04.08 +20 29 17.9 UNEOCPI41
ZTF09k6* C2020 01 04.39717608 05 02.05 +18 45 28.0 ~14HK 17.83RUNEOCPI41
ZTF09k6 C2020 01 04.39752308 05 06.16 +18 44 49.3 ~14HK 17.83RUNEOCPI41
ZTF09k6 C2020 01 04.40093808 05 45.32 +18 38 38.0 ~14HK 17.05RUNEOCPI41
ZTF09k6 C2020 01 04.40128508 05 49.38 +18 37 59.7 ~14HK 17.05RUNEOCPI41
ZTF09k6 C2020 01 04.40229208 06 01.08 +18 36 07.8 ~14HK 17.84RUNEOCPI41
ZTF09k6 C2020 01 04.40263908 06 05.12 +18 35 28.5 ~14HK 17.84RUNEOCPI41
ZTF09k6 C2020 01 04.40373808 06 18.22 +18 33 22.7 ~14HK 17.77RUNEOCPI41
ZTF09k6 C2020 01 04.40408608 06 22.18 +18 32 44.1 ~14HK 17.77RUNEOCPI41
ZTF09k6 C2020 01 04.40419008 06 23.42 +18 32 32.0 ~14HK 17.84RUNEOCPI41
ZTF09k6 C2020 01 04.40453708 06 27.46 +18 31 52.7 ~14HK 17.84RUNEOCPI41
ZTF09k6 C2020 01 04.40655108 06 51.12 +18 28 04.9 ~14HK 17.78RUNEOCPI41
ZTF09k6 C2020 01 04.40689808 06 55.20 +18 27 25.8 ~14HK 17.78RUNEOCPI41
ZTF09k6 C2020 01 04.40844908 07 12.98 +18 24 34.5 ~14HK 17.80RUNEOCPI41
ZTF09k6 C2020 01 04.40879608 07 16.99 +18 23 55.5 ~14HK 17.80RUNEOCPI41
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 (N51.474969 W1.447003) 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 (S8.788708 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 2020 Jan 2.775201 +/- 0.000406 TT = 18:36:17 (JD 2458851.275201)
Epoch 2020 Jan 1.0 TT; AMR 0.014112 +/- 0.000584 m2/kg Gray
M 240.3108850449 +/- 0.027 (J2000 equator)
n 67.4228624157 +/- 1.98e-5 Peri. 27.9143966 +/- 0.026
a129042.28616 +/- 0.0253 Node 335.6203553 +/- 0.0007
e 0.041746342 +/- 1.14e-5 Incl. 32.3619466 +/- 0.00027
P7688.64m/5.339d H 31.3 G 0.15 U 5.5
q 123655.24269 +/- 1.47 Q 134429.32963 +/- 1.48
From 57 observations 2016 Apr. 1-2020 Jan. 4; mean residual 17".476
Residuals in arcseconds: 160401 F51 18.3- 13.1+ 160905 Y00 8.47- 4.01- 180307 I41 48.3+ 28.7- 160401 F51 16.8- 11.3+ 160906 Y28 15.3- 9.93- 180307 I41 51.0+ 30.6- 160401 F51 18.1- 12.9+ 160906 Y28 15.1- 9.45- 180307 I41 49.8+ 30.3- 160904 Y00 10.5- .804- 160906 Y28 15.2- 10.0- 180307 I41 50.2+ 31.4- 160904 Y00 10.3- 3.18- 160906 Y28 15.1- 9.76- 180307 I41 48.4+ 29.9- 160904 Y00 11.1- 3.58- 161002 J95 1.24- .081+ 200104 I41 14.2- 2.82+ 160905 Y00 7.42- 2.30- 161002 J95 1.80- .391+ 200104 I41 13.4- 2.68+ 160905 Y00 7.81- 1.56- 161002 J95 2.37- .146+ 200104 I41 23.2- 11.7+ 160905 Y00 8.78- 3.54- 161002 J95 1.99- .099- 200104 I41 23.1- 12.2+ 160905 Y00 9.16- 3.19- 161018 J95 .767+ 1.99+ 200104 I41 23.7- 12.8+ 160905 Y00 8.51- 2.13- 161018 J95 .275+ 1.95+ 200104 I41 23.8- 12.3+ 160905 Y00 10.1- 4.06- 161018 J95 .502+ 1.13+ 200104 I41 19.8- 9.51+ 160905 Y00 9.84- 2.83- 170718 Y00 8.27+ 7.37+ 200104 I41 21.1- 9.90+ 160905 Y00 7.96- 3.01- 170718 Y00 7.96+ 7.02+ 200104 I41 20.8- 9.46+ 160905 Y00 7.84- 2.93- 170718 Y00 9.44+ 8.46+ 200104 I41 20.8- 9.05+ 160905 Y00 8.86- 2.76- 170803 Y00 24.5+ 19.3+ 200104 I41 18.2- 7.33+ 160905 Y00 8.14- 3.04- 170803 Y00 24.9+ 18.7+ 200104 I41 17.7- 7.23+ 160905 Y00 8.13- 2.97- 170803 Y00 24.0+ 19.4+ 200104 I41 21.8- 10.5+ 160905 Y00 6.34- 2.36- 180307 I41 49.4+ 28.8- 200104 I41 22.3- 10.6+ Ephemerides (geocentric): Date (UTC) HH RA Dec delta elong mag " sig PA ---- -------- -------------- ----------- ----- ----- --- -------- 2020 01 04 00 06 18 17.663 +28 57 11.53 128832 169.6 16.6 59.6 105 2020 01 04 02 06 42 42.145 +27 21 40.50 129357 174.5 16.4 58.8 108 2020 01 04 04 07 06 10.607 +25 31 40.42 129877 176.5 16.3 57.9 111 2020 01 04 06 07 28 43.532 +23 29 07.10 130387 172.6 16.5 57.1 113 2020 01 04 08 07 50 23.352 +21 15 51.77 130883 167.6 16.7 56.3 115 2020 01 04 10 08 11 13.934 +18 53 38.60 131360 162.3 16.9 55.4 117 2020 01 04 12 08 31 20.123 +16 24 03.46 131814 157.1 17.1 54.6 118 2020 01 04 14 08 50 47.375 +13 48 33.69 132241 151.9 17.3 53.8 120 2020 01 04 16 09 09 41.483 +11 08 28.42 132638 146.7 17.4 53.0 121 2020 01 04 18 09 28 08.390 +08 24 59.40 133002 141.5 17.6 52.3 121 2020 01 04 20 09 46 14.061 +05 39 12.08 133329 136.3 17.7 51.6 122 2020 01 04 22 10 04 04.422 +02 52 06.77 133618 131.2 17.9 50.9 122 2020 01 05 00 10 21 45.320 +00 04 39.92 133865 126.0 18.0 50.3 122 2020 01 05 02 10 39 22.517 -02 42 14.67 134069 120.9 18.2 49.8 122 2020 01 05 04 10 57 01.690 -05 27 44.57 134228 115.8 18.3 49.3 122 2020 01 05 06 11 14 48.438 -08 10 57.57 134342 110.7 18.5 48.8 121 2020 01 05 08 11 32 48.276 -10 51 00.47 134409 105.6 18.7 48.4 120 2020 01 05 10 11 51 06.622 -13 26 58.04 134429 100.5 18.8 48.1 119 2020 01 05 12 12 09 48.756 -15 57 52.00 134402 95.5 19.0 47.9 118 2020 01 05 14 12 28 59.742 -18 22 40.09 134328 90.4 19.2 47.7 116 2020 01 05 16 12 48 44.315 -20 40 15.44 134208 85.3 19.4 47.5 115 2020 01 05 18 13 09 06.712 -22 49 26.08 134042 80.2 19.7 47.5 113 2020 01 05 20 13 30 10.449 -24 48 54.99 133833 75.0 19.9 47.5 111 2020 01 05 22 13 51 58.041 -26 37 20.53 133582 69.9 20.2 47.6 108 2020 01 06 00 14 14 30.691 -28 13 17.73 133291 64.7 20.5 47.8 106 2020 01 06 02 14 37 47.957 -29 35 20.21 132963 59.6 20?? 48.0 103 2020 01 06 04 15 01 47.471 -30 42 03.13 132600 54.3 21?? 48.3 100 2020 01 06 06 15 26 24.763 -31 32 06.83 132205 49.1 21?? 48.7 97 2020 01 06 08 15 51 33.253 -32 04 21.11 131782 43.8 22?? 49.1 93 2020 01 06 10 16 17 04.493 -32 17 49.52 131334 38.5 23?? 49.6 90 2020 01 06 12 16 42 48.646 -32 11 53.31 130865 33.2 23?? 50.2 87 2020 01 06 14 17 08 35.186 -31 46 14.30 130380 27.8 24?? 50.8 83 2020 01 06 16 17 34 13.709 -31 00 56.22 129882 22.4 26?? 51.5 80 2020 01 06 18 17 59 34.733 -29 56 24.40 129377 17.0 28?? 52.3 77 2020 01 06 20 18 24 30.361 -28 33 23.87 128869 11.5 31?? 53.1 74 2020 01 06 22 18 48 54.719 -26 52 56.37 128363 6.2 38?? 53.9 71 2020 01 07 00 19 12 44.141 -24 56 16.70 127863 2.6 55?? 54.7 68 2020 01 07 02 19 35 57.137 -22 44 49.06 127375 6.2 38?? 55.6 66 2020 01 07 04 19 58 34.191 -20 20 03.86 126903 11.6 31?? 56.5 64 2020 01 07 06 20 20 37.465 -17 43 35.05 126452 17.3 28?? 57.4 62 2020 01 07 08 20 42 10.487 -14 56 58.30 126026 23.0 25?? 58.3 61 2020 01 07 10 21 03 17.836 -12 01 49.85 125630 28.8 24?? 59.2 60 2020 01 07 12 21 24 04.883 -08 59 46.04 125268 34.6 23?? 60.1 59 2020 01 07 14 21 44 37.579 -05 52 23.24 124944 40.5 22?? 61.0 58 2020 01 07 16 22 05 02.285 -02 41 18.27 124660 46.4 22?? 61.8 58 2020 01 07 18 22 25 25.652 +00 31 50.99 124421 52.3 21?? 62.5 58 2020 01 07 20 22 45 54.514 +03 45 24.87 124228 58.3 20?? 63.2 58 2020 01 07 22 23 06 35.795 +06 57 41.02 124084 64.3 20.4 63.8 59 2020 01 08 00 23 27 36.407 +10 06 53.63 123990 70.3 20.0 64.3 59 2020 01 08 02 23 49 03.103 +13 11 12.72 123947 76.2 19.7 64.8 61 2020 01 08 04 00 11 02.293 +16 08 43.73 123956 82.2 19.4 65.1 62 2020 01 08 06 00 33 39.774 +18 57 27.50 124016 88.2 19.1 65.4 64 2020 01 08 08 00 57 00.378 +21 35 20.87 124127 94.2 18.9 65.6 66 2020 01 08 10 01 21 07.528 +24 00 18.23 124289 100.2 18.7 65.6 68 2020 01 08 12 01 46 02.722 +26 10 14.11 124498 106.2 18.5 65.6 71 2020 01 08 14 02 11 45.010 +28 03 07.12 124755 112.1 18.3 65.4 74 2020 01 08 16 02 38 10.545 +29 37 05.16 125054 118.0 18.1 65.2 77 2020 01 08 18 03 05 12.348 +30 50 31.65 125395 123.9 17.9 64.9 80 2020 01 08 20 03 32 40.404 +31 42 12.09 125774 129.7 17.8 64.4 84 2020 01 08 22 04 00 22.195 +32 11 19.97 126187 135.5 17.6 63.9 88 2020 01 09 00 04 28 03.641 +32 17 40.89 126631 141.3 17.5 63.4 91 2020 01 09 02 04 55 30.333 +32 01 33.93 127101 147.0 17.3 62.7 95 2020 01 09 04 05 22 28.814 +31 23 49.90 127593 152.7 17.2 62.0 99 2020 01 09 06 05 48 47.683 +30 25 46.77 128102 158.3 17.0 61.2 102 2020 01 09 08 06 14 18.316 +29 09 03.07 128623 163.9 16.8 60.4 105 2020 01 09 10 06 38 55.157 +27 35 30.61 129151 169.4 16.6 59.6 108 2020 01 09 12 07 02 35.618 +25 47 07.48 129682 174.7 16.4 58.7 111 2020 01 09 14 07 25 19.707 +23 45 52.15 130210 178.0 Sha 57.8 113 2020 01 09 16 07 47 09.518 +21 33 39.05 130729 173.8 16.5 56.9 115 2020 01 09 18 08 08 08.703 +19 12 15.74 131235 168.6 16.7 56.0 117 2020 01 09 20 08 28 21.990 +16 43 21.31 131722 163.3 16.9 55.2 118 2020 01 09 22 08 47 54.785 +14 08 25.91 132186 158.0 17.1 54.3 119 2020 01 10 00 09 06 52.881 +11 28 50.94 132622 152.8 17.2 53.5 120 2020 01 10 02 09 25 22.242 +08 45 49.87 133026 147.6 17.4 52.7 121 2020 01 10 04 09 43 28.873 +06 00 29.22 133394 142.4 17.6 51.9 122 2020 01 10 06 10 01 18.735 +03 13 49.82 133722 137.3 17.7 51.2 122 2020 01 10 08 10 18 57.712 +00 26 48.05 134008 132.1 17.8 50.6 122 2020 01 10 10 10 36 31.594 -02 19 42.85 134249 127.0 18.0 50.0 122 2020 01 10 12 10 54 06.078 -05 04 51.50 134442 121.9 18.1 49.4 122 2020 01 10 14 11 11 46.779 -07 47 47.14 134585 116.8 18.3 48.9 121 2020 01 10 16 11 29 39.227 -10 27 38.43 134678 111.8 18.5 48.5 120 2020 01 10 18 11 47 48.859 -13 03 32.33 134719 106.7 18.6 48.2 119 2020 01 10 20 12 06 20.987 -15 34 33.01 134708 101.7 18.8 47.9 118 2020 01 10 22 12 25 20.734 -17 59 40.91 134645 96.6 19.0 47.7 117 2020 01 11 00 12 44 52.931 -20 17 51.94 134531 91.5 19.2 47.6 115 2020 01 11 02 13 05 01.969 -22 27 56.96 134365 86.4 19.4 47.5 113 2020 01 11 04 13 25 51.590 -24 28 41.59 134150 81.3 19.6 47.5 111 2020 01 11 06 13 47 24.625 -26 18 46.51 133888 76.2 19.9 47.6 109 2020 01 11 08 14 09 42.690 -27 56 48.40 133579 71.1 20.1 47.8 106 2020 01 11 10 14 32 45.862 -29 21 21.67 133229 65.9 20.5 48.1 103 2020 01 11 12 14 56 32.373 -30 31 01.08 132838 60.7 20.8 48.4 100 2020 01 11 14 15 20 58.396 -31 24 25.14 132411 55.5 21?? 48.8 97 2020 01 11 16 15 45 57.989 -32 00 20.19 131951 50.2 21?? 49.3 94 2020 01 11 18 16 11 23.249 -32 17 44.83 131463 44.9 22?? 49.8 91 2020 01 11 20 16 37 04.729 -32 15 53.99 130951 39.6 22?? 50.5 87 2020 01 11 22 17 02 52.073 -31 54 22.28 130420 34.2 23?? 51.1 84 2020 01 12 00 17 28 34.805 -31 13 05.84 129875 28.8 24?? 51.9 81 2020 01 12 02 17 54 03.143 -30 12 22.69 129321 23.3 25?? 52.7 77 2020 01 12 04 18 19 08.711 -28 52 51.36 128764 17.8 27?? 53.5 74 2020 01 12 06 18 43 45.046 -27 15 28.28 128209 12.2 30?? 54.4 71