[Iaude] MPEC X124: 2021 XU2 [a=1.65,e=0.41,i=28.8,H=19.7,PHA]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Mon Dec 6 05:44:23 EST 2021


M.P.E.C. 2021-X124                             Issued 2021 December 6, 10:43 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 XU2                                    


Observations:
     K21X02U* C2021 12 02.08304521 16 16.26 +02 32 49.1          21.79GVEX124G96
     K21X02U  C2021 12 02.08869021 16 17.59 +02 32 40.7          21.03GVEX124G96
     K21X02U  C2021 12 02.09433321 16 18.96 +02 32 31.3          21.01GVEX124G96
     K21X02U  C2021 12 02.09998421 16 20.23 +02 32 23.4          21.47GVEX124G96
     K21X02U HC2021 12 02.17011821 16 36.81 +02 30 36.8          21.00GVEX124G96
     K21X02U HC2021 12 02.17070621 16 36.96 +02 30 36.8                VEX124G96
     K21X02U HC2021 12 02.17129521 16 37.05 +02 30 36.5                VEX124G96
     K21X02U HC2021 12 02.17188221 16 37.19 +02 30 35.2                VEX124G96
     K21X02U HC2021 12 03.15040621 20 32.49 +02 05 55.0                VEX124G96
     K21X02U HC2021 12 03.15099321 20 32.62 +02 05 53.8          21.16GVEX124G96
     K21X02U KC2021 12 05.01657221 28 08.35 +01 18 22.8          21.7 VuEX124H21
     K21X02U KC2021 12 05.01869721 28 08.90 +01 18 19.8          21.8 VuEX124H21
     K21X02U KC2021 12 05.74114 21 31 07.63 +00 59 45.2          21.3 GVEX124204
     K21X02U KC2021 12 06.07738721 32 31.29 +00 51 07.3          20.90GVEX124I52
     K21X02U KC2021 12 06.08045721 32 32.03 +00 51 02.8          20.95GVEX124I52
     K21X02U KC2021 12 06.08352521 32 32.77 +00 50 58.1          20.61GVEX124I52
     K21X02U KC2021 12 06.08659321 32 33.52 +00 50 52.7          20.92GVEX124I52

Observer details:
204 Schiaparelli Observatory.  Observer L. Buzzi.  0.84-m f/3.5 reflector +
    CCD.
G96 Mt. Lemmon Survey.  Observer A. R. Gibbs.  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.  1.3-m f/4.0 astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer D. C. Fuls.  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 XU2                                            PHA, Earth MOID = 0.0130 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Bell                    
M   7.66628              (2000.0)            P               Q                  
n   0.46630527     Peri.  194.19174     +0.41424602     -0.82492959             
a   1.6469832      Node   232.85390     +0.87502861     +0.47722435             
e   0.4130319      Incl.   28.84607     +0.25044992     -0.30289949             
P   2.11           H   19.79          G   0.15           U   9                  
Residuals in seconds of arc
211202 G96  0.3+  0.1+    211202 G96  0.3-  0.6+    211205 204 (0.9-  0.2+)
211202 G96  0.4+  0.1+    211202 G96  0.3-  0.2+    211206 I52  0.1+  0.1-
211202 G96  0.9+  0.7-    211203 G96  0.1-  0.1+    211206 I52  0.0   0.2+
211202 G96  0.1+  0.1-    211203 G96  0.3-  0.2-    211206 I52  0.2-  0.3+
211202 G96  0.3+  0.9-    211205 H21  0.2+  0.0     211206 I52  0.2-  0.4-
211202 G96  0.4+  0.0     211205 H21  0.7+  0.3+

Ephemeris:
2021 XU2                 a,e,i = 1.65, 0.41, 29                  q = 0.9667
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 06    19 47 59.3 +12 26 15   0.7929  1.1601    80.3    57.4    21.7
...
2021 11 21    20 34 55.5 +06 59 30   0.7424  1.0831    76.0    62.3    21.5
...
2021 11 29    21 04 12.7 +03 49 27   0.7159  1.0477    74.1    64.9    21.5
...
2021 12 05    21 28 04.4 +01 18 57   0.6976  1.0246    72.7    66.7    21.4
2021 12 06    21 32 12.1 +00 53 15   0.6947  1.0210    72.5    67.0    21.4
2021 12 07    21 36 22.4 +00 27 23   0.6919  1.0176    72.3    67.3    21.4
...
2021 12 13    22 02 14.6 -02 10 54   0.6767  0.9990    71.2    68.9    21.4
...
2021 12 21    22 38 43.3 -05 47 22   0.6613  0.9804    70.1    70.6    21.3
...
2022 01 05    23 51 21.3 -12 22 23   0.6516  0.9667    69.1    71.9    21.3

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X124




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