[Iaude] MPEC Y34: 2021 YC [a=1.28,e=0.22,i=6.6,H=25.8]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Fri Dec 17 21:48:55 EST 2021


M.P.E.C. 2021-Y34                             Issued 2021 December 18, 02:47 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 YC                                     


Observations:
     K21Y00C* C2021 12 17.36375107 13 07.08 +17 21 17.6          16.48oVEY034T08
     K21Y00C  C2021 12 17.37474707 13 27.31 +17 29 33.9          16.92oVEY034T08
     K21Y00C  C2021 12 17.37939307 13 35.85 +17 33 03.7          16.73oVEY034T08
     K21Y00C  C2021 12 17.38308807 13 42.59 +17 35 49.2          16.73oVEY034T08
     K21Y00C  C2021 12 17.52367807 17 49.24 +19 18 16.7          16.90oVEY034T08
     K21Y00C  C2021 12 17.52413807 17 50.07 +19 18 35.7          16.74oVEY034T08
     K21Y00C  C2021 12 17.52460007 17 50.85 +19 18 55.3          16.64oVEY034T08
     K21Y00C  C2021 12 17.52506107 17 51.63 +19 19 15.1          16.54oVEY034T08
     K21Y00C  C2021 12 17.52552007 17 52.42 +19 19 34.0          16.48oVEY034T08
     K21Y00C [C2021 12 17.61976 07 21 28.97 +20 36 45.3          17.0 GVEY034Q62
     K21Y00C [C2021 12 17.62186 07 21 32.66 +20 38 14.4          16.8 GVEY034Q62
     K21Y00C [C2021 12 17.62331 07 21 35.16 +20 39 14.4          17.5 GVEY034Q62
     K21Y00C KC2021 12 17.86104 07 30 14.63 +23 00 26.1          17.2 VqEY034C77
     K21Y00C KC2021 12 17.86310 07 30 18.55 +23 01 49.6          16.9 VqEY034C77
     K21Y00C KC2021 12 17.87118 07 30 34.41 +23 07 17.4          17.3 VqEY034C77
     K21Y00C KC2021 12 17.87374 07 30 39.19 +23 09 00.2          16.8 VqEY034C77
     K21Y00C KC2021 12 17.88447407 30 58.46 +23 16 04.8          16.8 GVEY034203
     K21Y00C KC2021 12 17.88910907 31 07.22 +23 19 10.6          16.9 GVEY034203
     K21Y00C KC2021 12 17.89344207 31 15.43 +23 22 04.8          17.2 GVEY034203
     K21Y00C KC2021 12 17.90677507 31 45.81 +23 30 45.2          16.9 GXEY034958
     K21Y00C KC2021 12 17.90967307 31 51.32 +23 32 41.2          16.7 GXEY034958
     K21Y00C KC2021 12 17.91257207 31 56.80 +23 34 36.9          16.5 GXEY034958
     K21Y00C KC2021 12 17.93105607 32 25.42 +23 46 56.8                VEY034204
     K21Y00C KC2021 12 17.93233407 32 27.77 +23 47 47.4                VEY034204
     K21Y00C KC2021 12 17.93361407 32 30.13 +23 48 38.2          16.9 GVEY034204
     K21Y00C KC2021 12 17.96873507 33 30.91 +24 11 49.5          17.0 GVEY034L01
     K21Y00C KC2021 12 17.96952907 33 32.32 +24 12 20.6          17.1 GVEY034L01
     K21Y00C KC2021 12 17.97032407 33 33.74 +24 12 51.0          17.2 GVEY034L01
     K21Y00C KC2021 12 17.97111707 33 35.14 +24 13 21.6          17.2 GVEY034L01
     K21Y00C KC2021 12 17.97191007 33 36.57 +24 13 52.3          17.2 GVEY034L01
     K21Y00C KC2021 12 17.98818407 34 05.56 +24 24 11.5          16.7 GXEY034595
     K21Y00C IC2021 12 17.99100107 34 10.59 +24 25 59.5                XEY034595
     K21Y00C KC2021 12 17.99291307 34 17.08 +24 27 08.4          16.8 GVEY034K38
     K21Y00C KC2021 12 17.99382007 34 15.56 +24 27 47.7          16.9 GXEY034595
     K21Y00C KC2021 12 18.00470407 34 38.19 +24 34 37.7          17.2 GVEY034K38
     K21Y00C KC2021 12 18.00897807 34 45.68 +24 37 21.5          17.3 GVEY034K38

Observer details:
203 GiaGa Observatory.  Observers S. Foglia, G. Galli.  Measurer G. Galli.
    0.36-m f/5.76 Schmidt-Cassegrain + CCD.
204 Schiaparelli Observatory.  Observer L. Buzzi.  0.84-m f/3.5 reflector +
    CCD.
595 Farra d'Isonzo.  Observers G. Ierman, E. Pettarin.  Measurer E. Pettarin.
    0.40-m f/5.15 reflector + CCD.
958 Observatoire de Dax.  Observers P. Dupouy, J. B. de Vanssay.  Measurer P.
    Dupouy.  0.43-m f/2.7 reflector + CCD.
C77 Bernezzo Observatory.  Observer A. Mantero.  0.25-m f/4.0 reflector + CCD.
K38 M57 Observatory, Saltrio.  Observers G. Baj, M. Bosetti.  0.35-m f/5.6
    Ritchey-Chretien + CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.
Q62 iTelescope Observatory, Siding Spring.  Observer M. Suzuki.  0.5-m f/4.5
    reflector + CCD.
T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, R. Siverd, J. Tonry, H.
    Weiland.  Measurers L. Denneau, N. Erasmus, A. Fitzsimmons, A. Lawrence,
    J. Robinson, R. Siverd, J. Tonry, H. Weiland.  0.5-m reflector + CCD.

Orbital elements:
2021 YC                                                  Earth MOID = 0.0095 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
M  28.76433              (2000.0)            P               Q                  
n   0.68260132     Peri.  351.33694     +0.21935087     -0.96880373             
a   1.2774913      Node    85.93296     +0.90192340     +0.15627091             
e   0.2238190      Incl.    6.64034     +0.37204754     +0.19235056             
P   1.44           H   25.85          G   0.15           U   6                  
Residuals in seconds of arc
211217 T08  0.1+  0.2+    211217 C77  0.3-  0.6+    211217 204  0.1-  0.3+
211217 T08  0.3-  0.0     211217 C77  1.4-  0.5+    211217 L01  0.2+  0.4-
211217 T08  0.2+  0.5+    211217 C77 (2.0+  1.2+)   211217 L01  0.1+  0.0
211217 T08  0.2+  0.1-    211217 C77  0.1+  0.6+    211217 L01  0.1+  0.4-
211217 T08  0.2-  0.2+    211217 203  0.7+  0.2+    211217 L01  0.1-  0.5-
211217 T08  0.2+  0.3-    211217 203  0.1+  0.4-    211217 L01  0.0   0.6-
211217 T08  0.0   0.3-    211217 203  0.3+  0.1+    211217 595  0.1+  0.3-
211217 T08  0.3-  0.0     211217 958  0.2+  0.2-    211217 595  0.7+  0.1+
211217 T08  0.3-  0.5-    211217 958  0.2+  0.2-    211217 K38 (1.1-  1.1+)
211217 Q62  0.2+  0.4-    211217 958  0.0   0.4-    211217 595  0.1+  0.1+
211217 Q62  0.2+  0.4+    211217 204  0.2-  0.1-    211218 K38 (1.2+  1.0-)
211217 Q62  0.4-  0.1-    211217 204  0.2-  0.0     211218 K38  0.1+  0.2-

Ephemeris:
2021 YC                  a,e,i = 1.28, 0.22, 7                   q = 0.9916
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 18    01 34 45.4 -55 11 20   0.07375 1.0059   101.5    74.4    22.8
...
2021 12 03    02 23 13.2 -53 29 59   0.03661 0.9923    99.1    78.8    21.4
...
2021 12 11    03 59 08.5 -43 02 01   0.01697 0.9912   111.9    67.2    19.3
...
2021 12 17    06 59 35.8 +12 46 33   0.0097670.9931   158.0    21.8    16.8
2021 12 18    07 34 15.0 +24 36 16   0.01072 0.9937   154.5    25.3    17.1
2021 12 19    08 06 36.3 +33 37 11   0.01222 0.9943   147.8    31.8    17.6
...
2021 12 25    10 11 42.3 +52 45 47   0.02579 0.9992   126.7    52.1    19.8
...
2022 01 02    11 09 12.3 +56 32 10   0.04649 1.0092   122.6    55.1    21.2
...
2022 01 17    11 26 25.6 +57 33 35   0.08603 1.0378   127.0    49.2    22.4

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-Y34




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