• MPC Preparation (Info)

  • MPEC 2021-X91 : 2021 XT1

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    M.P.E.C. 2021-X91                              Issued 2021 December 4, 06:51 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 XT1                                 
    
    
    Observations:
         K21X01T* C2021 12 02.26106704 33 22.54 +03 33 57.6          21.17GVEX091G96
         K21X01T  C2021 12 02.26623404 33 29.49 +03 33 47.8          20.57GVEX091G96
         K21X01T  C2021 12 02.27141604 33 36.39 +03 33 37.7          21.50GVEX091G96
         K21X01T KC2021 12 02.37742804 35 59.90 +03 30 08.1          21.29GVEX091I52
         K21X01T KC2021 12 02.37935404 36 02.54 +03 30 04.5          21.34GVEX091I52
         K21X01T KC2021 12 02.38128104 36 05.20 +03 30 00.2          20.88GVEX091I52
         K21X01T 1C2021 12 03.07034 04 53 59.01 +03 04 13.3          21.6 VVEX091033
         K21X01T 1C2021 12 03.07113 04 54 00.22 +03 04 11.7          22.2 VVEX091033
         K21X01T 1C2021 12 03.07196 04 54 01.55 +03 04 11.0          21.6 VVEX091033
         K21X01T KC2021 12 03.21552404 58 10.96 +02 59 44.5          20.7 VuEX091H21
         K21X01T KC2021 12 03.21831804 58 15.29 +02 59 38.1          21.0 VuEX091H21
         K21X01T KC2021 12 03.23160804 58 35.69 +02 59 08.2          21.2 VuEX091H21
         K21X01T KC2021 12 03.26260904 59 31.83 +02 58 35.6          21.20GVEX091I52
         K21X01T KC2021 12 03.26457704 59 34.85 +02 58 31.1          20.98GVEX091I52
         K21X01T |C2021 12 04.18343 05 26 24.23 +02 27 35.4          21.0 GVEX091807
         K21X01T |C2021 12 04.18710 05 26 30.47 +02 27 25.9          21.3 GVEX091807
         K21X01T |C2021 12 04.19440 05 26 42.84 +02 27 06.7          21.4 GVEX091807
         K21X01T  C2021 12 04.20326805 27 10.56 +02 19 32.9          21.2 GVEX091H01
         K21X01T  C2021 12 04.20644805 27 16.09 +02 19 24.6          20.5 GVEX091H01
         K21X01T  C2021 12 04.22264805 27 44.18 +02 18 42.5          21.4 GVEX091H01
         K21X01T  C2021 12 04.22672705 27 51.24 +02 18 31.8          20.9 GVEX091H01
    
    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.
    807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes, L.
        Horn.  1.00-m f/10.0 astrograph + 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.
    H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
        Measurer W. H. Ryan.  2.4-m f/8.9 Ritchey-Chretien + 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 D. Rankin.  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 XT1                                                 Earth MOID = 0.0131 AU
    Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Bell                    
    M  15.73558              (2000.0)            P               Q                  
    n   0.47148346     Peri.  263.94497     +0.01843603     -0.99982977             
    a   1.6349021      Node   184.99884     +0.92063298     +0.01726267             
    e   0.3921800      Incl.    0.48368     +0.38999362     +0.00651373             
    P   2.09           H   28.57          G   0.15           U   7                  
    Residuals in seconds of arc
    211202 G96  0.1-  0.0     211203 033  0.0   0.8-    211204 807  0.0   0.1+
    211202 G96  0.2+  0.1+    211203 033  0.7+  0.4+    211204 807  0.2+  0.1+
    211202 G96  0.5-  0.1-    211203 H21  0.3-  0.1-    211204 807  0.0   0.0
    211202 I52  0.0   0.0     211203 H21  0.2+  0.1-    211204 H01  0.1-  0.1+
    211202 I52  0.1-  0.3+    211203 H21  0.3-  0.3+    211204 H01  0.1-  0.0
    211202 I52  0.1+  0.1-    211203 I52  0.2-  0.2+    211204 H01  0.1-  0.0
    211203 033  0.1+  1.0-    211203 I52  0.2-  0.2+    211204 H01  0.2-  0.1-
    
    Ephemeris:
    2021 XT1                 a,e,i = 1.63, 0.39, 0                   q = 0.9937
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 11 04    01 43 43.9 +07 59 15   0.1109  1.0995   165.2    13.3    24.8
    ...
    2021 11 19    02 10 54.2 +06 30 17   0.05962 1.0428   155.4    23.2    23.6
    ...
    2021 11 27    03 04 20.5 +05 23 31   0.03630 1.0205   157.5    21.7    22.5
    ...
    2021 12 03    04 52 13.0 +03 11 34   0.02328 1.0079   160.8    18.8    21.4
    2021 12 04    05 20 43.4 +02 31 56   0.02198 1.0061   158.1    21.4    21.3
    2021 12 05    05 52 09.0 +01 46 34   0.02108 1.0045   153.8    25.7    21.4
    ...
    2021 12 11    08 57 23.5 -02 35 07   0.02479 0.9971   119.4    59.4    22.7
    ...
    2021 12 19    10 47 09.7 -04 14 56   0.04321 0.9937   101.9    75.7    24.4
    ...
    2022 01 03    11 42 17.4 -04 18 38   0.08314 1.0074   104.5    70.9    25.7
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X91
    


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