• MPC Preparation (Info)

  • MPEC 2021-X123 : 2021 XT2

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    M.P.E.C. 2021-X123                             Issued 2021 December 5, 20:09 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@CFA.HARVARD.EDU
                URL https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                    2021 XT2                                 
    
    
    Observations:
         K21X02T* C2021 12 03.39169508 10 31.29 +01 52 00.8          21.37GVEX123G96
         K21X02T  C2021 12 03.39684608 10 33.07 +01 51 58.3          21.22GVEX123G96
         K21X02T  C2021 12 03.40201808 10 34.92 +01 51 56.6          21.31GVEX123G96
         K21X02T KC2021 12 03.51303808 11 14.16 +01 51 13.3          21.33GVEX123I52
         K21X02T KC2021 12 03.51447208 11 14.69 +01 51 13.2          20.91GVEX123I52
         K21X02T KC2021 12 03.51590608 11 15.16 +01 51 13.0          21.13GVEX123I52
         K21X02T KC2021 12 03.51734008 11 15.67 +01 51 12.1          21.05GVEX123I52
         K21X02T KC2021 12 04.32831308 16 21.11 +01 45 58.1          21.3 VuEX123H21
         K21X02T KC2021 12 04.33270808 16 22.76 +01 45 56.6          21.7 VuEX123H21
         K21X02T 1C2021 12 05.21086 08 22 07.60 +01 40 14.7          21.3 VVEX123033
         K21X02T 1C2021 12 05.21300 08 22 08.49 +01 40 14.0          21.0 VVEX123033
         K21X02T 1C2021 12 05.21523 08 22 09.32 +01 40 12.8          21.0 VVEX123033
         K21X02T KC2021 12 05.35073908 23 05.73 +01 39 26.7          20.9 VuEX123H21
         K21X02T KC2021 12 05.35372108 23 06.93 +01 39 25.8          21.0 VuEX123H21
         K21X02T KC2021 12 05.35651808 23 08.03 +01 39 24.4          20.8 VuEX123H21
         K21X02T KC2021 12 05.39932508 23 25.83 +01 39 11.7          21.59GVEX123I52
         K21X02T KC2021 12 05.40061908 23 26.32 +01 39 11.1          21.88GVEX123I52
         K21X02T KC2021 12 05.40191408 23 26.83 +01 39 09.9                VEX123I52
         K21X02T KC2021 12 05.40320808 23 27.34 +01 39 10.3                VEX123I52
    
    Observer details:
    033 Karl Schwarzschild Observatory, Tautenburg.  Observers S. Melnikov, C.
        Hoegner, U. Laux, F. Ludwig, B. Stecklum.  Measurer B. Stecklum.  1.34-m
        f/3 Schmidt + 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,
        0.76-m f/3.0 astrograph + CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observers D. Rankin, 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 XT2                                                 Earth MOID = 0.0071 AU
    Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
    M 355.10274              (2000.0)            P               Q                  
    n   0.37840677     Peri.   60.20124     -0.92407954     -0.31951491             
    a   1.8930559      Node   100.48387     +0.23317531     -0.90609549             
    e   0.5691699      Incl.   12.31534     +0.30283043     -0.27731063             
    P   2.60           H   22.29          G   0.15           U   9                  
    Residuals in seconds of arc
    211203 G96  0.3+  0.3+    211204 H21  0.1-  0.1+    211205 H21  0.0   0.0
    211203 G96  0.2-  0.2-    211204 H21  0.0   0.3+    211205 I52  0.2+  0.2+
    211203 G96  0.2+  0.1+    211205 033  0.1+  0.2-    211205 I52  0.1-  0.1+
    211203 I52  0.0   0.5-    211205 033  0.7+  0.0     211205 I52  0.2-  0.6-
    211203 I52  0.3+  0.0     211205 033  0.2-  0.4-    211205 I52  0.3-  0.3+
    211203 I52  0.3-  0.3+    211205 H21  0.1-  0.1+
    211203 I52  0.3-  0.1-    211205 H21  0.2+  0.3+
    
    Ephemeris:
    2021 XT2                 a,e,i = 1.89, 0.57, 12                  q = 0.8156
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 11 05    06 31 48.7 +04 55 24   0.5997  1.4060   122.2    36.6    23.4
    ...
    2021 11 20    07 11 35.1 +03 19 06   0.4135  1.2767   126.2    38.6    22.4
    ...
    2021 11 28    07 42 14.0 +02 26 59   0.3250  1.2076   126.3    41.2    21.9
    ...
    2021 12 04    08 14 15.4 +01 48 24   0.2651  1.1562   124.4    44.7    21.4
    2021 12 05    08 20 43.3 +01 42 02   0.2558  1.1478   123.8    45.5    21.4
    2021 12 06    08 27 35.4 +01 35 41   0.2467  1.1393   123.2    46.4    21.3
    ...
    2021 12 12    09 19 18.7 +00 57 26   0.1983  1.0892   117.0    53.6    20.9
    ...
    2021 12 20    11 04 46.2 +00 04 20   0.1579  1.0250   100.7    70.6    20.8
    ...
    2022 01 04    14 43 34.0 -01 15 58   0.1968  0.9184    65.2   103.6    22.4
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X123
    


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