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  • MPEC 2021-X90 : 2021 XQ1

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    M.P.E.C. 2021-X90                              Issued 2021 December 4, 03:58 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 XQ1                                 
    
    
    Observations:
         K21X01Q* C2021 12 02.19434903 06 02.07 +03 29 46.1                VEX090G96
         K21X01Q  C2021 12 02.20000703 06 07.18 +03 30 40.0          20.70GVEX090G96
         K21X01Q  C2021 12 02.20566703 06 12.33 +03 31 35.0          20.48GVEX090G96
         K21X01Q  C2021 12 02.21132703 06 17.48 +03 32 29.7          20.58GVEX090G96
         K21X01Q KC2021 12 02.29870603 07 33.14 +03 45 48.5          20.48GVEX090I52
         K21X01Q KC2021 12 02.29964403 07 33.95 +03 45 56.7          20.49GVEX090I52
         K21X01Q KC2021 12 02.30058203 07 34.72 +03 46 04.8          20.68GVEX090I52
         K21X01Q KC2021 12 02.30152003 07 35.50 +03 46 13.2          20.21GVEX090I52
         K21X01Q |C2021 12 03.08480 03 16 56.14 +05 14 41.1          21.4 VuEX090807
         K21X01Q |C2021 12 03.09099 03 16 58.72 +05 15 10.3          21.1 VuEX090807
         K21X01Q |C2021 12 03.09722 03 17 01.30 +05 15 39.0          21.4 VuEX090807
         K21X01Q KC2021 12 03.15076303 17 32.92 +05 15 06.6          21.43GVEX090I52
         K21X01Q KC2021 12 03.15236903 17 33.60 +05 15 14.2          21.55GVEX090I52
         K21X01Q KC2021 12 03.15397603 17 34.29 +05 15 20.8          21.67GVEX090I52
         K21X01Q KC2021 12 04.12409503 23 31.82 +06 10 04.2          22.4 VuEX090H21
         K21X01Q KC2021 12 04.13159903 23 33.48 +06 10 23.7          22.1 VuEX090H21
    
    Observer details:
    807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes, L.
        Horn.  0.61-m f/6.5 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.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers T. Linder, R. Holmes, L. Horn.  1.3-m f/4.0 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 XQ1                                                 Earth MOID = 0.0013 AU
    Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
    M  84.20360              (2000.0)            P               Q                  
    n   0.79522374     Peri.   67.22693     +0.69154309     +0.71152438             
    a   1.1538335      Node   247.14667     -0.70235306     +0.62208791             
    e   0.5868506      Incl.    7.76496     -0.16872563     +0.32671041             
    P   1.24           H   27.76          G   0.15           U   7                  
    Residuals in seconds of arc
    211202 G96 (0.9+  0.7+)   211202 I52  0.1+  0.2-    211203 I52  0.3-  0.1+
    211202 G96  0.3-  0.3-    211202 I52  0.0   0.1+    211203 I52  0.2+  0.7-
    211202 G96  0.3-  0.1+    211203 807  0.3+  0.2-    211204 H21  0.1+  0.1+
    211202 G96  0.0   0.4+    211203 807  0.1+  0.3+    211204 H21  0.1+  0.0
    211202 I52  0.1+  0.1-    211203 807  0.1-  0.2+
    211202 I52  0.4+  0.1-    211203 I52  0.5-  0.2-
    
    Ephemeris:
    2021 XQ1                 a,e,i = 1.15, 0.59, 8                   q = 0.4767
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 11 04    15 41 16.9 -10 26 37   0.3232  0.6883    16.6   155.7    34.2
    ...
    2021 11 19    15 47 59.2 -09 56 49   0.1289  0.8616     9.8   168.7
    ...
    2021 11 27    16 04 02.9 -12 01 03   0.03666 0.9506     9.2   170.5
    ...
    2021 12 03    03 16 06.1 +05 05 17   0.03194 1.0147   154.2    25.0    21.5
    2021 12 04    03 22 51.6 +06 06 23   0.04324 1.0251   155.2    23.8    22.1
    2021 12 05    03 26 52.3 +06 42 37   0.05459 1.0355   155.5    23.3    22.6
    ...
    2021 12 11    03 36 06.5 +08 07 28   0.1235  1.0960   152.7    24.3    24.6
    ...
    2021 12 19    03 41 17.3 +08 56 22   0.2182  1.1724   146.7    27.5    26.0
    ...
    2022 01 03    03 50 59.0 +10 16 05   0.4074  1.3026   134.7    32.4    27.8
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X90
    


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