[Iaude] MPEC X221: 2021 XF6 [a=0.87,e=0.26,i=9.8,H=24.4]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Tue Dec 14 06:35:46 EST 2021


M.P.E.C. 2021-X221                            Issued 2021 December 14, 11:34 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 XF6                                    


Observations:
     K21X06F* C2021 12 12.49066307 34 29.23 +54 02 57.7          20.76GVEX221G96
     K21X06F  C2021 12 12.49644407 34 24.54 +54 02 43.8          20.62GVEX221G96
     K21X06F  C2021 12 12.50222507 34 19.87 +54 02 30.3          20.94GVEX221G96
     K21X06F  C2021 12 12.50799507 34 15.16 +54 02 16.9          20.96GVEX221G96
     K21X06F KC2021 12 12.52878107 33 58.36 +54 01 26.0          22.20GVEX221I52
     K21X06F KC2021 12 12.52972807 33 57.55 +54 01 23.6          21.13GVEX221I52
     K21X06F KC2021 12 12.53067607 33 57.04 +54 01 22.6                VEX221I52
     K21X06F KC2021 12 12.53162407 33 56.16 +54 01 19.6          21.71GVEX221I52
     K21X06F KC2021 12 13.11343 07 26 30.68 +53 39 03.3          21.0 GVEX221204
     K21X06F KC2021 12 13.14380 07 26 06.25 +53 37 46.5                VEX221204
     K21X06F  C2021 12 13.21784507 25 18.49 +53 34 42.6          20.4 GVEX221H01
     K21X06F  C2021 12 13.22094107 25 16.03 +53 34 35.8          20.5 GVEX221H01
     K21X06F  C2021 12 13.23146107 25 07.64 +53 34 12.9          20.9 GVEX221H01
     K21X06F  C2021 12 13.24223707 24 59.01 +53 33 49.2          21.3 GVEX221H01
     K21X06F KC2021 12 13.27864207 24 27.31 +53 32 28.3          20.7 VuEX221H21
     K21X06F KC2021 12 13.28461207 24 22.50 +53 32 13.4          21.1 VuEX221H21
     K21X06F KC2021 12 13.32351307 23 53.77 +53 30 43.2          21.15GVEX221I52
     K21X06F KC2021 12 13.32543307 23 52.20 +53 30 38.9          21.02GVEX221I52
     K21X06F KC2021 12 13.32735207 23 50.60 +53 30 34.0          21.13GVEX221I52
     K21X06F KC2021 12 13.32927207 23 49.08 +53 30 29.9          20.94GVEX221I52
     K21X06F KC2021 12 14.22583807 12 21.15 +52 50 08.2          20.9 VuEX221H21
     K21X06F KC2021 12 14.23143607 12 16.69 +52 49 53.3          20.8 VuEX221H21
     K21X06F KC2021 12 14.23423507 12 14.45 +52 49 45.7          20.9 VuEX221H21

Observer details:
204 Schiaparelli Observatory.  Observer L. Buzzi.  0.84-m f/3.5 reflector +
    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.
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. 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 XF6                                                 Earth MOID = 0.1039 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
M 194.19027              (2000.0)            P               Q                  
n   1.20744112     Peri.    1.76972     +0.22718992     +0.95946384             
a   0.8734246      Node   281.38793     -0.89556721     +0.13856880             
e   0.2565746      Incl.    9.79504     -0.38254950     +0.24541359             
P   0.82           H   24.41          G   0.15           U   7                  
Residuals in seconds of arc
211212 G96  0.1+  0.1+    211213 204  0.3-  0.1+    211213 I52  0.1+  0.1-
211212 G96  0.1+  0.3-    211213 204  0.3+  0.4+    211213 I52  0.1+  0.1+
211212 G96  0.2+  0.1-    211213 H01  0.0   0.1-    211213 I52  0.3-  0.2-
211212 G96  0.1-  0.2+    211213 H01  0.0   0.1-    211213 I52  0.1+  0.2+
211212 I52  0.6-  0.7-    211213 H01  0.1+  0.1-    211214 H21  0.2-  0.3-
211212 I52 (1.0-  0.8-)   211213 H01  0.0   0.0     211214 H21  0.1+  0.0
211212 I52 (1.2+  0.5+)   211213 H21  0.5-  0.2+    211214 H21  0.1+  0.0
211212 I52  0.2+  0.2-    211213 H21  0.2-  0.4-

Ephemeris:
2021 XF6                 a,e,i = 0.87, 0.26, 10                  q = 0.6493
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 14    11 04 53.1 +50 46 14   0.1766  0.9994    88.1    81.7    23.5
...
2021 11 29    09 55 19.5 +54 46 21   0.1398  1.0443   110.8    62.0    22.4
...
2021 12 07    08 41 59.4 +55 47 13   0.1218  1.0628   126.9    47.9    21.8
...
2021 12 13    07 28 00.9 +53 43 28   0.1122  1.0742   141.1    35.1    21.3
2021 12 14    07 15 11.2 +53 00 37   0.1111  1.0758   143.6    32.9    21.2
2021 12 15    07 02 29.3 +52 10 55   0.1103  1.0775   146.0    30.7    21.1
...
2021 12 21    05 53 55.2 +45 04 46   0.1090  1.0858   158.4    19.5    20.8
...
2021 12 29    04 52 30.7 +32 54 30   0.1192  1.0935   156.3    21.2    21.0
...
2022 01 13    04 06 14.0 +15 39 45   0.1655  1.0971   129.9    43.4    22.4

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X221




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