[Iaude] MPEC X207: 2021 XU5 [a=1.75,e=0.65,i=2.2,H=29.4]

[mpec at marsden.cfa.harvard.edu]

M.P.E.C. 2021-X207                            Issued 2021 December 12, 22:24 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
    on behalf of Division F of the International Astronomical Union by the
          Minor Planet Center, Smithsonian Astrophysical Observatory,
                          Cambridge, MA 02138, U.S.A.

             Prepared using the Tamkin Foundation Computer Network

                              MPC at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                    2021 XU5                                    


Observations:
     K21X05U* C2021 12 08.26521804 45 01.20 +27 35 38.3          20.94GVEX207G96
     K21X05U  C2021 12 08.27084404 44 55.59 +27 35 56.1          21.17GVEX207G96
     K21X05U  C2021 12 08.27645904 44 49.91 +27 36 14.0          21.50GVEX207G96
     K21X05U  C2021 12 08.28208304 44 44.34 +27 36 31.6          20.93GVEX207G96
     K21X05U KC2021 12 08.34236604 43 41.11 +27 39 32.5          21.03GVEX207I52
     K21X05U KC2021 12 08.34585804 43 37.27 +27 39 42.2                VEX207I52
     K21X05U KC2021 12 08.34935104 43 33.44 +27 39 52.4          20.07GVEX207I52
     K21X05U KC2021 12 09.14042604 20 20.42 +28 57 28.4          19.6 VuEX207H21
     K21X05U KC2021 12 09.14148704 20 16.18 +28 57 41.0          19.5 VuEX207H21
     K21X05U KC2021 12 09.14254904 20 11.91 +28 57 53.7          19.5 VuEX207H21

Observer details:
G96 Mt. Lemmon Survey.  Observer R. A. Kowalski.  Measurers E. J. Christensen,
    G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A.
    Kowalski, S. M. Larson, G. J. Leonard, D. Rankin, R. L. Seaman, F. C.
    Shelly, K. W. Wierzchos.  1.5-m reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers T. Linder, R. Holmes, L. Horn.  0.76-m f/3.0 astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer H. Groeller.  Measurers
    E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
    H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, D. Rankin, R. L.
    Seaman, F. C. Shelly, K. W. Wierzchos.

Orbital elements:
2021 XU5                                                 Earth MOID = 0.0006 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Bell                    
M 357.72328              (2000.0)            P               Q                  
n   0.42725522     Peri.  267.39362     -0.96945923     -0.24246677             
a   1.7458669      Node   258.57234     +0.23730260     -0.88942252             
e   0.6519818      Incl.    2.15516     +0.06193772     -0.38747575             
P   2.31           H   29.41          G   0.15           U   8                  
Residuals in seconds of arc
211208 G96  0.2+  0.0     211208 I52  0.6+  0.1+    211209 H21  0.1+  0.0
211208 G96  0.1-  0.1-    211208 I52  0.1-  0.2-    211209 H21  0.1-  0.1+
211208 G96  0.9-  0.0     211208 I52  0.5-  0.1+
211208 G96  0.6+  0.0     211209 H21  0.0   0.1-

Ephemeris:
2021 XU5                 a,e,i = 1.75, 0.65, 2                   q = 0.6076
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 12    05 00 29.3 +25 49 12   0.3275  1.2898   152.7    20.6    28.6
...
2021 11 27    05 03 22.0 +26 13 46   0.1450  1.1285   166.9    11.4    26.2
...
2021 12 05    04 59 26.3 +26 37 43   0.05443 1.0398   174.6     5.1    23.6
...
2021 12 11    17 35 48.3 -23 43 52   0.01221 0.9726     5.6   174.3
2021 12 12    17 21 01.4 -24 59 44   0.02323 0.9614     2.3   177.7
2021 12 13    17 15 40.7 -25 25 19   0.03429 0.9502     2.5   177.4
...
2021 12 19    17 08 24.6 -25 57 36   0.1015  0.8838     9.1   169.9
...
2021 12 27    17 08 27.4 -26 00 24   0.1955  0.7985    17.0   158.9
...
2022 01 11    17 21 19.4 -25 50 53   0.3985  0.6648    29.2   133.7    32.6

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X207