"Pseudo-MPEC" for C4639C1
Created 2026 Mar 31 6:35:10 UT using Find_Orb
Click here for an explanation of pseudo-MPECs
Astrometry:
C4639C1*1C2026 03 21.36786013 07 13.912+03 39 00.11 ~3L9K 18.16GVNEOCP703
C4639C1 1C2026 03 21.37011613 07 33.701+03 35 57.37 ~3L9K VNEOCP703
C4639C1 1C2026 03 21.37237413 07 54.116+03 32 49.67 ~3L9K VNEOCP703
C4639C1 1C2026 03 21.37462913 08 13.952+03 29 46.75 ~3L9K 18.02GVNEOCP703
C4639C1 1C2026 03 21.38980313 10 26.958+03 09 20.77 ~3L9o 18.22GVNEOCPI52
C4639C1 1C2026 03 21.39025413 10 30.860+03 08 44.81 ~3L9o 18.32GVNEOCPI52
C4639C1 1C2026 03 21.39070713 10 34.781+03 08 08.41 ~3L9o 18.24GVNEOCPI52
C4639C1 1C2026 03 21.39115913 10 38.701+03 07 32.99 ~3L9o 17.83GVNEOCPI52
Station data:
(703) Catalina Sky Survey (N32.417029 W110.732640) US/Arizona. Observer E.
J. Christensen. Measurers T. Beuden, V. F. Carvajal, 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, F.
C. Shelly, K. W. Wierzchoś. 0.68 m Schmidt + 10K CCD.
(I52) Steward Observatory, Mt. Lemmon Station (N32.442570 W110.788920)
US/Arizona. Measurers T. Beuden, V. F. Carvajal, 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, F. C.
Shelly, K. W. Wierzchoś. 1.0-m prime focus + CCD.
Orbital elements: C4639C1
Perigee 2026 Mar 20.824833 +/- 6.35 TT = 19:47:45.5 (JD 2461120.324833)
Epoch 2026 Mar 21.0 TT = JDT 2461120.5 AutoNEOCP
q378461.9619 +/- 1.1e+6 (J2000 equator)
H 30.19 G 0.15 Peri. 140.988706 +/- 60
Node 24.142274 +/- 60
e 20.46035276 +/- 0.159 Incl. 29.178142 +/- 0.21
From 8 observations 2026 Mar. 21 (33.6 min); mean residual 1".46
Residuals in arcseconds: 260321 703 .35- .47+ 260321 703 1.8+ 1.2- 260321 I52 .36- .06- 260321 703 3.6- 1.9+ 260321 I52 .24+ .23- 260321 I52 .50- .76+ 260321 703 2.9+ 1.7- 260321 I52 .09- .00 Ephemerides (geocentric): Date (UTC) HH RA Dec delta r elong mag " sig PA ---- -------- ------------ ------------ ------ ------ ----- --- -------- 2026 03 31 07 16 32 26.058 -21 19 01.10 .02779 1.0133 120.5 24.5 518' 75 2026 03 31 08 16 32 30.520 -21 19 26.96 .02790 1.0134 120.6 24.5 518' 75 2026 03 31 09 16 32 34.940 -21 19 52.60 .02801 1.0135 120.6 24.5 519' 76 2026 03 31 10 16 32 39.318 -21 20 18.02 .02812 1.0135 120.6 24.6 520' 76 2026 03 31 11 16 32 43.654 -21 20 43.22 .02823 1.0136 120.6 24.6 521' 76 2026 03 31 12 16 32 47.948 -21 21 08.20 .02834 1.0137 120.7 24.6 523' 76 2026 03 31 13 16 32 52.202 -21 21 32.97 .02845 1.0138 120.7 24.6 524' 76 2026 03 31 14 16 32 56.416 -21 21 57.52 .02856 1.0138 120.7 24.6 525' 76 2026 03 31 15 16 33 00.589 -21 22 21.87 .02866 1.0139 120.7 24.6 527' 76 2026 03 31 16 16 33 04.723 -21 22 46.00 .02877 1.0140 120.8 24.6 528' 76 2026 03 31 17 16 33 08.818 -21 23 09.93 .02888 1.0141 120.8 24.6 530' 76 2026 03 31 18 16 33 12.874 -21 23 33.66 .02899 1.0142 120.8 24.6 532' 76 2026 03 31 19 16 33 16.891 -21 23 57.19 .02910 1.0142 120.8 24.6 534' 76 2026 03 31 20 16 33 20.870 -21 24 20.52 .02921 1.0143 120.8 24.6 536' 76 2026 03 31 21 16 33 24.812 -21 24 43.65 .02932 1.0144 120.9 24.6 538' 77 2026 03 31 22 16 33 28.716 -21 25 06.58 .02943 1.0145 120.9 24.6 540' 77 2026 03 31 23 16 33 32.584 -21 25 29.33 .02953 1.0146 120.9 24.6 542' 77 2026 04 01 00 16 33 36.415 -21 25 51.88 .02964 1.0147 121.0 24.7 545' 77 2026 04 01 01 16 33 40.209 -21 26 14.25 .02975 1.0147 121.0 24.7 547' 77 2026 04 01 02 16 33 43.968 -21 26 36.43 .02986 1.0148 121.0 24.7 550' 77 2026 04 01 03 16 33 47.691 -21 26 58.43 .02997 1.0149 121.0 24.7 552' 77 2026 04 01 04 16 33 51.379 -21 27 20.25 .03008 1.0150 121.1 24.7 555' 77 2026 04 01 05 16 33 55.033 -21 27 41.88 .03019 1.0151 121.1 24.7 558' 77 2026 04 01 06 16 33 58.651 -21 28 03.34 .03030 1.0151 121.1 24.7 561' 77 2026 04 01 07 16 34 02.236 -21 28 24.62 .03041 1.0152 121.1 24.7 564' 77 2026 04 01 08 16 34 05.786 -21 28 45.73 .03051 1.0153 121.2 24.7 567' 77 2026 04 01 09 16 34 09.303 -21 29 06.66 .03062 1.0154 121.2 24.7 571' 77 2026 04 01 10 16 34 12.787 -21 29 27.43 .03073 1.0155 121.2 24.7 574' 77 2026 04 01 11 16 34 16.237 -21 29 48.02 .03084 1.0156 121.2 24.7 578' 77 2026 04 01 12 16 34 19.655 -21 30 08.45 .03095 1.0156 121.3 24.7 582' 77 2026 04 01 13 16 34 23.041 -21 30 28.72 .03106 1.0157 121.3 24.7 585' 77 2026 04 01 14 16 34 26.394 -21 30 48.82 .03117 1.0158 121.3 24.8 589' 77 2026 04 01 15 16 34 29.716 -21 31 08.75 .03128 1.0159 121.4 24.8 593' 78 2026 04 01 16 16 34 33.006 -21 31 28.53 .03138 1.0160 121.4 24.8 597' 78 2026 04 01 17 16 34 36.265 -21 31 48.15 .03149 1.0161 121.4 24.8 602' 78 2026 04 01 18 16 34 39.493 -21 32 07.61 .03160 1.0161 121.4 24.8 606' 78 2026 04 01 19 16 34 42.691 -21 32 26.92 .03171 1.0162 121.5 24.8 611' 78 2026 04 01 20 16 34 45.858 -21 32 46.07 .03182 1.0163 121.5 24.8 615' 78 2026 04 01 21 16 34 48.995 -21 33 05.07 .03193 1.0164 121.5 24.8 620' 78 2026 04 01 22 16 34 52.101 -21 33 23.92 .03204 1.0165 121.5 24.8 625' 78 2026 04 01 23 16 34 55.179 -21 33 42.62 .03215 1.0166 121.6 24.8 630' 78 2026 04 02 00 16 34 58.227 -21 34 01.17 .03225 1.0166 121.6 24.8 636' 78 2026 04 02 01 16 35 01.245 -21 34 19.58 .03236 1.0167 121.6 24.8 641' 78 2026 04 02 02 16 35 04.235 -21 34 37.84 .03247 1.0168 121.7 24.8 647' 78 2026 04 02 03 16 35 07.196 -21 34 55.96 .03258 1.0169 121.7 24.8 652' 78 2026 04 02 04 16 35 10.129 -21 35 13.93 .03269 1.0170 121.7 24.8 658' 78 2026 04 02 05 16 35 13.034 -21 35 31.76 .03280 1.0171 121.7 24.9 665' 78 2026 04 02 06 16 35 15.911 -21 35 49.46 .03291 1.0172 121.8 24.9 671' 78