• MPC Preparation (Info)

  • MPEC 2021-X102 : 2021 XA2

    The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.

    A form allowing access to any MPEC is at the bottom of this page.


    Read MPEC 2021-X101 Read MPEC 2021-X103


    M.P.E.C. 2021-X102                             Issued 2021 December 4, 15:04 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 XA2                                 
    
    
    Observations:
         K21X02A* C2021 12 02.19577902 45 31.81 +03 03 48.7          21.08GVEX102G96
         K21X02A  C2021 12 02.20143802 45 29.76 +03 04 49.8          21.94GVEX102G96
         K21X02A  C2021 12 02.20709702 45 27.62 +03 05 51.9          21.51GVEX102G96
         K21X02A  C2021 12 02.21275502 45 25.59 +03 06 53.1          21.58GVEX102G96
         K21X02A KC2021 12 02.31190702 44 49.45 +03 24 45.2          21.54GVEX102V06
         K21X02A KC2021 12 02.31406702 44 48.67 +03 25 08.2          21.31GVEX102V06
         K21X02A KC2021 12 02.31622202 44 47.89 +03 25 31.3          21.46GVEX102V06
         K21X02A KC2021 12 03.12087402 40 13.98 +05 49 50.7          21.8 VuEX102H21
         K21X02A KC2021 12 03.12470202 40 12.62 +05 50 31.1          22.2 VuEX102H21
         K21X02A KC2021 12 03.12878302 40 11.16 +05 51 15.1          22.2 VuEX102H21
         K21X02A KC2021 12 04.10931702 34 40.32 +08 44 47.6          21.4 VuEX102H21
         K21X02A KC2021 12 04.11291102 34 39.05 +08 45 25.5          21.1 VuEX102H21
         K21X02A  C2021 12 04.33598002 33 21.76 +09 24 27.0          20.7 GVEX102H01
         K21X02A  C2021 12 04.33925802 33 20.62 +09 25 01.2          20.9 GVEX102H01
         K21X02A  C2021 12 04.35056602 33 16.72 +09 26 58.9          21.1 GVEX102H01
         K21X02A  C2021 12 04.35644902 33 14.71 +09 28 00.2          20.7 GVEX102H01
    
    Observer details:
    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.  1.3-m f/4.0 astrograph + CCD.
    V06 Catalina Sky Survey-Kuiper.  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.  1.55-m reflector + 1K CCD.
    
    Orbital elements:
    2021 XA2                                                 Earth MOID = 0.1397 AU
    Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
    M  37.48966              (2000.0)            P               Q                  
    n   0.64160534     Peri.  348.88718     +0.50831367     -0.72008525             
    a   1.3313454      Node    68.90028     +0.82383621     +0.24686345             
    e   0.1566230      Incl.   30.41580     +0.25082087     +0.64848722             
    P   1.54           H   24.09          G   0.15           U   9                  
    Residuals in seconds of arc
    211202 G96  0.0   0.3-    211202 V06  0.2+  0.2-    211204 H01  0.1+  0.0
    211202 G96  0.3+  0.5-    211203 H21  0.3-  0.3+    211204 H01  0.1-  0.1+
    211202 G96  0.8-  0.5+    211203 H21  0.2-  0.4-    211204 H01  0.1-  0.0
    211202 G96  0.1-  0.4+    211203 H21  0.1-  0.1-    211204 H01  0.0   0.0
    211202 V06  0.1+  0.3+    211204 H21  0.3+  0.0
    211202 V06  0.1+  0.0     211204 H21  0.2+  0.0
    
    Ephemeris:
    2021 XA2                 a,e,i = 1.33, 0.16, 30                  q = 1.1228
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 11 04    05 06 44.0 -45 14 22   0.2951  1.1297   110.5    55.3    23.7
    ...
    2021 11 19    04 02 37.2 -30 26 03   0.1950  1.1232   129.8    42.5    22.4
    ...
    2021 11 27    03 16 16.9 -12 14 56   0.1631  1.1230   144.1    31.0    21.7
    ...
    2021 12 03    02 40 54.9 +05 28 36   0.1604  1.1244   147.5    28.1    21.6
    2021 12 04    02 35 16.5 +08 25 56   0.1620  1.1248   146.8    28.6    21.7
    2021 12 05    02 29 45.0 +11 19 27   0.1642  1.1252   145.9    29.4    21.7
    ...
    2021 12 11    01 59 39.9 +26 30 10   0.1877  1.1284   136.5    36.9    22.2
    ...
    2021 12 19    01 29 18.5 +40 08 49   0.2383  1.1345   124.0    46.0    23.0
    ...
    2022 01 03    01 01 22.8 +53 17 08   0.3567  1.1517   109.3    53.7    24.1
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X102
    


    Read MPEC 2021-X101 Read MPEC 2021-X103


    MPEC number:

    Enter an MPEC number in one of the following forms:

    • 1997-B01 (the full form)
    • J97B01 (the packed version of the full form)
    • B01 (the abbreviated form)