"Pseudo-MPEC" for C3R7AC1 = A10VD8Z = C3R7C51
Created 2023 Jun 7 14:15:30 UT using Find_Orb
Click here for an explanation of pseudo-MPECs
A few days ago, ATLAS reported a tracklet for A10VD8z, short enough that I couldn't even be sure that it was an artsat. However, if it was one, it would have an inclination of about 31 degrees and ascending node around 288 degrees.
Five days later, Catalina reported data for C3R7AC1, with a sufficient arc to say that it was geocentric with a matching inclination and ascending node. This enabled an easy linkage. Solving for solar radiation pressure gets you AMR = 0.9 +/- 0.9 m2/kg, so this isn't an ETBO.
A search through the MPC's artsat file and through NEOCP objects didn't turn up additional tracklets. Since it's not an ETBO, we ought to have been able to identify it going back a while. It's fairly bright. My guess is that this is a relatively new object. There's nothing in the Space-Track TLEs with matching inclination and eccentricity, so I can't associate it with a known launch.
As usual, I've computed TLEs for the object and they are posted to the GitHub repository and will be used by Sat_ID.
Astrometry:
A10VD8Z C2023 05 31.58361000 26 15.636+29 24 30.56 .50 13.86oV T05
A10VD8Z C2023 05 31.58691000 27 39.269+29 29 26.41 .50 15.12oV T05
A10VD8Z C2023 05 31.59311600 30 17.674+29 38 34.44 .50 13.89oV T05
C3R7AC1*1C2023 06 05.43202322 49 38.096+24 16 54.77 ~65FF VNEOCP703
C3R7AC1 1C2023 06 05.43327922 49 51.812+24 18 55.84 ~65FF VNEOCP703
C3R7AC1 1C2023 06 05.43578422 50 19.100+24 22 54.59 ~65FF 14.37GVNEOCP703
C3R7AC1 mC2023 06 05.45528722 53 49.660+24 53 00.40 ~65FF 17.05GVNEOCPI52
C3R7AC1 mC2023 06 05.45539822 53 50.830+24 53 10.30 ~65FF 17.10GVNEOCPI52
C3R7AC1 mC2023 06 05.45549922 53 51.910+24 53 19.50 ~65FF 15.51GVNEOCPI52
C3R7AC1 mC2023 06 05.45561522 53 53.160+24 53 30.30 ~65FF VNEOCPI52
C3R7AC1 1C2023 06 05.45676622 54 04.601+24 55 26.26 ~65FF 16.53GVNEOCP703
C3R7AC1 1C2023 06 05.45705722 54 07.722+24 55 52.64 ~65FF 16.93GVNEOCP703
C3R7AC1 1C2023 06 05.45720322 54 09.230+24 56 05.64 ~65FF 15.94GVNEOCP703
C3R7AC1 mC2023 06 05.45870522 54 25.862+24 58 09.62 ~65FF 16.25GVNEOCPI52
C3R7AC1 mC2023 06 05.45880622 54 26.942+24 58 18.91 ~65FF 16.56GVNEOCPI52
C3R7AC1 mC2023 06 05.45890722 54 28.012+24 58 27.70 ~65FF 16.49GVNEOCPI52
C3R7AC1 mC2023 06 05.45901622 54 29.149+24 58 37.70 ~65FF 16.06GVNEOCPI52
C3R7AC1 1C2023 06 05.47015222 56 25.235+25 15 16.92 ~65FF VNEOCP703
C3R7AC1 1C2023 06 05.47029822 56 26.747+25 15 29.95 ~65FF 13.12GVNEOCP703
C3R7AC1 1C2023 06 05.47044322 56 28.259+25 15 42.12 ~65FF 12.25GVNEOCP703
C3R7C51 C2023 06 07.45699 22 38 48.33 +23 57 14.1 ~67DQ 15.1 GV 703
C3R7C51 C2023 06 07.45825 22 39 00.58 +23 59 10.0 ~67DQ 16.2 GV 703
C3R7C51 C2023 06 07.45950 22 39 13.11 +24 01 08.1 ~67DQ V 703
C3R7C51 C2023 06 07.46076 22 39 25.72 +24 03 06.3 ~67DQ V 703
Station data:
(703) Catalina Sky Survey (N32.417003 W110.732640) US/Arizona. Observers
D. Rankin, J. K. Hogan. Measurers E. J. Christensen, D. Fay, J. B.
Fazekas, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Gröller, J. K. Hogan,
R. A. Kowalski, S. M. Larson, G. J. Leonard, D. Rankin, R. L. Seaman, A.
Serrano, F. C. Shelly, K. W. Wierzchoś. 0.68-m Schmidt + 10K CCD.
(I52) Steward Observatory, Mt. Lemmon Station (N32.442544 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, K. W. Wierzchoś. 1.0-m prime focus + CCD.
(T05) ATLAS-HKO, Haleakala (N20.707582 W156.257008) US/Hawaii. Observers
L. Denneau, A. Heinze, H. Weiland, J. Tonry, H. Flewelling, A.
Fitzsimmons, D. Young, B. Stalder. Measurers L. Denneau, A. Heinze, J.
Tonry. 0.5-m f/2.0 Schmidt + CCD.
Orbital elements: C3R7AC1 = A10VD8Z
Perigee 2023 Jun 4.9433502 +/- 4.7e-5 TT = 22:38:25.45 (JD 2460100.4433502)
Epoch 2023 Jun 5.0 TT = JDT 2460100.5 Find_Orb
M 19.8255643567 +/- 0.016 (J2000 equator)
n 349.9668563991 +/- 0.00251 Peri. 237.7241330 +/- 0.0037
a 43044.621686 +/- 0.206 Node 287.3089484 +/- 0.0014
e 0.823565809 +/- 6.4e-5 Incl. 30.9988529 +/- 0.00039
P1481.26m/1.029d H 28.49 G 0.15 U 8.7
q 7594.5429786 +/- 2.72 Q 78494.700394 +/- 3.11
From 24 observations 2023 May 31-June 7; mean residual 2".010
Residuals in arcseconds: 230531 T05 2.36- .222- 230605 I52 1.21- 1.31- 230605 I52 1.04- 1.21- 230531 T05 6.57+ 1.98+ 230605 I52 .946- 1.05- 230605 703 .718- 1.17- 230531 T05 .741+ .131+ 230605 703 1.42- 0.99- 230605 703 .853- .895- 230605 703 .114+ .580- 230605 703 .857- .949- 230605 703 .844- 1.39- 230605 703 .822- .292- 230605 703 1.36- 1.16- 230607 703 6.74+ 5.77+ 230605 703 2.42- 1.34- 230605 I52 1.06- 1.28- 230607 703 1.20+ 2.18+ 230605 I52 1.22- 1.14- 230605 I52 .884- 1.09- 230607 703 1.24+ 2.21+ 230605 I52 1.33- 1.33- 230605 I52 .842- 1.40- 230607 703 1.38+ 1.87+ Ephemerides (geocentric): Date (UTC) HH RA Dec delta elong mag " sig PA ---- -------- ------------ ------------ ------ ----- --- -------- 2023 06 07 00 11 07 18.485 -27 23 48.03 7606 102.2 9.8 796 105 2023 06 07 01 18 44 46.579 -03 31 41.58 21282 147.9 10.7 147 60 2023 06 07 02 19 56 24.642 +07 07 43.58 33899 127.2 12.2 66.4 61 2023 06 07 03 20 32 30.437 +12 10 14.51 43797 117.1 13.1 41.4 63 2023 06 07 04 20 56 54.805 +15 19 30.30 51822 110.4 13.7 28.9 65 2023 06 07 05 21 15 42.680 +17 35 02.13 58424 105.4 14.1 21.1 66 2023 06 07 06 21 31 19.054 +19 20 08.17 63864 101.4 14.4 15.7 68 2023 06 07 07 21 44 56.048 +20 46 03.47 68307 97.9 14.7 11.5 70 2023 06 07 08 21 57 15.099 +21 59 00.26 71865 94.8 14.9 8.16 71 2023 06 07 09 22 08 42.737 +23 02 43.61 74614 92.0 15.1 5.33 73 2023 06 07 10 22 19 37.591 +23 59 39.26 76606 89.4 15.3 2.86 76 2023 06 07 11 22 30 13.951 +24 51 26.61 77875 86.9 15.4 .664 88 2023 06 07 12 22 40 43.816 +25 39 16.27 78443 84.4 15.5 1.39 68 2023 06 07 13 22 51 18.254 +26 23 59.81 78319 82.0 15.7 3.28 73 2023 06 07 14 23 02 08.500 +27 06 15.37 77500 79.5 15.7 5.07 75 2023 06 07 15 23 13 27.047 +27 46 30.54 75974 76.9 15.8 6.79 77 2023 06 07 16 23 25 29.022 +28 25 03.18 73715 74.2 15.9 8.46 79 2023 06 07 17 23 38 34.199 +29 01 59.74 70682 71.4 16.0 10.1 81 2023 06 07 18 23 53 10.392 +29 37 09.32 66815 68.2 16.1 11.7 83 2023 06 07 19 00 09 59.728 +30 09 48.40 62028 64.5 16.1 13.2 85 2023 06 07 20 00 30 11.611 +30 38 01.23 56192 60.2 16.2 14.5 88 2023 06 07 21 00 55 53.107 +30 56 44.95 49114 54.7 16?? 15.3 92 2023 06 07 22 01 31 34.096 +30 51 05.22 40479 47.2 16?? 14.2 98 2023 06 07 23 02 29 22.223 +29 23 19.04 29727 34.7 17?? 5.32 118 2023 06 08 00 04 42 21.309 +19 38 25.41 15834 5.6 33?? 79.1 113 2023 06 08 01 15 58 47.804 -23 47 28.13 10815 165.4 Sha 401 70 2023 06 08 02 19 15 39.714 +01 10 39.48 25695 139.7 11.3 95.9 60 2023 06 08 03 20 10 08.400 +09 09 42.15 37315 124.1 12.5 50.9 62 2023 06 08 04 20 41 21.575 +13 24 17.74 46547 115.4 13.3 33.4 64 2023 06 08 05 21 03 34.884 +16 12 05.03 54080 109.4 13.8 23.7 65 2023 06 08 06 21 21 11.035 +18 15 48.05 60287 104.8 14.2 17.4 67 2023 06 08 07 21 36 03.748 +19 53 33.21 65394 101.0 14.5 12.7 68 2023 06 08 08 21 49 12.616 +21 14 30.95 69544 97.6 14.7 9.04 70 2023 06 08 09 22 01 13.184 +22 23 54.85 72836 94.7 15.0 6.00 72 2023 06 08 10 22 12 28.917 +23 24 59.09 75338 91.9 15.1 3.39 74 2023 06 08 11 22 23 16.763 +24 19 51.66 77096 89.3 15.3 1.07 80 2023 06 08 12 22 33 50.099 +25 10 01.04 78140 86.8 15.4 1.06 66 2023 06 08 13 22 44 20.497 +25 56 30.70 78486 84.4 15.5 3.02 72 2023 06 08 14 22 54 58.958 +26 40 07.20 78141 81.9 15.6 4.89 75 2023 06 08 15 23 05 56.987 +27 21 24.82 77099 79.5 15.7 6.68 76 2023 06 08 16 23 17 27.736 +28 00 47.73 75342 76.9 15.8 8.45 78 2023 06 08 17 23 29 47.532 +28 38 30.09 72841 74.1 15.9 10.2 80 2023 06 08 18 23 43 18.229 +29 14 33.22 69550 71.2 16.0 11.9 82 2023 06 08 19 23 58 31.271 +29 48 37.43 65401 67.9 16.0 13.7 84 2023 06 08 20 00 16 15.500 +30 19 41.34 60296 64.0 16.1 15.5 86 2023 06 08 21 00 37 53.857 +30 45 06.82 54089 59.4 16?? 17.1 89 2023 06 08 22 01 06 04.550 +30 57 51.24 46557 53.4 16?? 18.4 93 2023 06 08 23 01 46 45.216 +30 35 45.29 37326 44.8 16?? 17.9 99 2023 06 09 00 02 57 55.063 +28 00 25.99 25706 29.3 18?? 6.99 118 2023 06 09 01 06 26 04.150 +06 10 16.08 10821 25.4 17?? 183 120 2023 06 09 02 17 48 04.015 -11 28 45.15 15826 164.9 Sha 184 62 2023 06 09 03 19 37 47.443 +04 33 54.09 29725 134.0 11.8 67.3 61 2023 06 09 04 20 21 45.191 +10 51 17.12 40479 121.6 12.8 39.7 62 2023 06 09 05 20 49 20.074 +14 30 00.12 49115 114.0 13.4 27.0 64 2023 06 09 06 21 09 47.542 +17 00 22.22 56195 108.6 13.9 19.3 66 2023 06 09 07 21 26 23.363 +18 54 02.56 62032 104.2 14.3 14.0 67 2023 06 09 08 21 40 38.540 +20 25 20.88 66820 100.6 14.5 9.99 69 2023 06 09 09 21 53 23.004 +21 41 51.49 70688 97.4 14.8 6.72 70 2023 06 09 10 22 05 07.581 +22 48 00.83 73723 94.5 15.0 3.95 72 2023 06 09 11 22 16 13.228 +23 46 37.48 75984 91.8 15.2 1.53 76 2023 06 09 12 22 26 55.512 +24 39 34.36 77511 89.3 15.3 .686 63 2023 06 09 13 22 37 27.079 +25 28 10.48 78332 86.8 15.4 2.72 72 2023 06 09 14 22 47 59.195 +26 13 22.95 78458 84.4 15.5 4.64 74 2023 06 09 15 22 58 42.903 +26 55 53.75 77892 81.9 15.6 6.50 76 2023 06 09 16 23 09 50.090 +27 36 13.49 76626 79.4 15.7 8.32 77 2023 06 09 17 23 21 34.715 +28 14 42.85 74637 76.8 15.8 10.1 79 2023 06 09 18 23 34 14.530 +28 51 31.89 71891 74.0 15.9 12.0 80 2023 06 09 19 23 48 13.848 +29 26 35.84 68336 70.9 15.9 13.9 82 2023 06 09 20 00 04 08.474 +29 59 24.01 63895 67.5 16.0 15.9 84 2023 06 09 21 00 22 55.499 +30 28 31.59 58459 63.5 16.1 18.0 87 2023 06 09 22 00 46 15.104 +30 50 22.27 51861 58.5 16?? 20.2 90 2023 06 09 23 01 17 27.375 +30 54 58.06 43841 51.9 16?? 22.2 94 2023 06 10 00 02 04 38.929 +30 08 22.03 33948 41.9 16?? 22.6 101 2023 06 10 01 03 36 05.341 +25 29 58.82 21337 21.6 19?? 8.93 119 2023 06 10 02 10 18 21.703 -23 57 59.33 7594 88.2 10.3 403 110 2023 06 10 03 18 40 05.479 -03 56 45.73 20648 151.2 10.5 104 60 2023 06 10 04 19 54 53.009 +07 09 24.43 33420 129.9 12.1 49.1 61 2023 06 10 05 20 31 48.473 +12 17 47.10 43417 119.6 13.0 31.1 63 2023 06 10 06 20 56 35.399 +15 28 50.76 51515 112.8 13.6 21.6 65 2023 06 10 07 21 15 36.213 +17 44 52.79 58174 107.8 14.0 15.5 66