• MPC Preparation (Info)

  • MPEC 2021-X116 : 2021 XP2

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    M.P.E.C. 2021-X116                             Issued 2021 December 5, 14:36 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 XP2                                 
    
    
    Observations:
         K21X02P*HC2021 12 04.48488410 42 51.31 +23 49 05.3          17.76GVEX116G96
         K21X02P HC2021 12 04.49064710 42 36.67 +23 41 03.0                VEX116G96
         K21X02P HC2021 12 04.49640210 42 22.04 +23 33 00.2                VEX116G96
         K21X02P HC2021 12 04.50215110 42 07.56 +23 25 01.1          18.30GVEX116G96
         K21X02P KC2021 12 04.51496210 41 35.35 +23 07 14.6          17.92GVEX116I52
         K21X02P KC2021 12 04.51538910 41 34.30 +23 06 39.5          17.56GVEX116I52
         K21X02P KC2021 12 04.51581510 41 33.26 +23 06 03.8          17.52GVEX116I52
         K21X02P KC2021 12 04.51623210 41 32.20 +23 05 29.3          17.63GVEX116I52
         K21X02P KC2021 12 04.53648010 40 41.93 +22 37 35.6          17.82GVEX116G96
         K21X02P KC2021 12 04.53679210 40 41.17 +22 37 09.9          17.79GVEX116G96
         K21X02P KC2021 12 04.53713310 40 40.34 +22 36 41.8          17.71GVEX116G96
         K21X02P KC2021 12 04.53744510 40 39.57 +22 36 16.2          17.79GVEX116G96
         K21X02P 1C2021 12 05.21697 10 22 48.56 +09 43 56.1          18.8 VVEX116033
         K21X02P 1C2021 12 05.21737 10 22 47.99 +09 43 34.0          19.2 VVEX116033
         K21X02P 1C2021 12 05.21777 10 22 47.42 +09 43 12.1          18.9 VVEX116033
         K21X02P mC2021 12 05.34990610 21 04.81 +07 50 24.2          18.43GVEX116I52
         K21X02P mC2021 12 05.35007010 21 04.62 +07 50 15.8          18.38GVEX116I52
         K21X02P mC2021 12 05.35023510 21 04.41 +07 50 08.1          18.17GVEX116I52
         K21X02P mC2021 12 05.35040010 21 04.22 +07 49 59.5          18.40GVEX116I52
         K21X02P KC2021 12 05.41784510 19 23.40 +06 53 50.2          18.5 VuEX116H21
         K21X02P KC2021 12 05.41890710 19 22.02 +06 52 59.1          18.1 VuEX116H21
         K21X02P KC2021 12 05.42319210 19 16.49 +06 49 32.8                uEX116H21
         K21X02P KC2021 12 05.42421910 19 15.14 +06 48 43.3          17.8 VuEX116H21
    
    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 K. W. Wierzchos.  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 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 XP2                                                 Earth MOID = 0.0022 AU
    Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
    M  20.64275              (2000.0)            P               Q                  
    n   0.41506622     Peri.  176.49256     +0.34123166     -0.93051671             
    a   1.7798816      Node   253.52092     +0.85900268     +0.36616597             
    e   0.4456674      Incl.    7.97487     +0.38167441     +0.00781874             
    P   2.37           H   25.66          G   0.15           U   7                  
    Residuals in seconds of arc
    211204 G96  0.6-  0.3-    211204 G96  0.0   0.0     211205 I52  0.0   0.0
    211204 G96  0.4-  0.6+    211204 G96  0.1+  0.0     211205 I52  0.0   0.4+
    211204 G96  0.8-  0.6-    211204 G96  0.2+  0.0     211205 I52  0.1+  0.1+
    211204 G96  0.1-  0.3+    211204 G96  0.1+  0.1+    211205 H21  0.1+  0.2-
    211204 I52  0.3-  0.1-    211205 033  0.1+  0.0     211205 H21  0.1-  0.1-
    211204 I52  0.1+  0.2+    211205 033  0.1+  0.2-    211205 H21  0.0   0.0
    211204 I52  0.3+  0.1-    211205 033  0.0   0.2-    211205 H21  0.3-  0.1-
    211204 I52  0.1+  0.0     211205 I52  0.1-  0.1+
    
    Ephemeris:
    2021 XP2                 a,e,i = 1.78, 0.45, 8                   q = 0.9866
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 11 05    21 29 51.1 +32 30 05   0.1179  1.0353   108.6    65.2    23.4
    ...
    2021 11 20    21 18 51.7 +35 46 39   0.05760 0.9968    97.0    79.7    22.2
    ...
    2021 11 28    20 57 49.4 +44 50 34   0.02429 0.9878    92.1    86.5    20.6
    ...
    2021 12 04    11 04 48.8 +36 44 42   0.0073730.9868    98.6    81.0    17.8
    2021 12 05    10 27 34.2 +13 25 23   0.0097040.9871    99.1    80.4    18.4
    2021 12 06    10 10 44.3 +00 24 15   0.01307 0.9876    99.1    80.1    19.0
    ...
    2021 12 12    09 43 06.3 -20 01 35   0.03738 0.9930   101.9    76.0    21.2
    ...
    2021 12 20    09 34 19.1 -24 41 02   0.07075 1.0075   107.7    68.5    22.3
    ...
    2022 01 04    09 23 10.1 -25 57 28   0.1314  1.0550   119.9    53.9    23.3
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X116
    


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