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  • MPEC 2021-U101 : 2021 UF1

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    M.P.E.C. 2021-U101                             Issued 2021 October 26, 21:15 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 UF1                                 
    
    
    Observations:
         K21U01F* C2021 10 25.37799701 58 41.20 +35 13 19.6          21.06GVEU101G96
         K21U01F  C2021 10 25.38702001 58 39.69 +35 12 19.2          20.09GVEU101G96
         K21U01F  C2021 10 25.39656901 58 38.05 +35 11 15.3          20.55GVEU101G96
         K21U01F  C2021 10 25.40316001 58 36.98 +35 10 31.7          20.03GVEU101G96
         K21U01F mC2021 10 25.46435901 58 26.91 +35 03 34.2          20.68GVEU101G96
         K21U01F mC2021 10 25.46578401 58 26.62 +35 03 24.5          20.83GVEU101G96
         K21U01F mC2021 10 25.46619701 58 26.52 +35 03 22.5          21.36GVEU101G96
         K21U01F mC2021 10 25.46737201 58 26.40 +35 03 13.9          20.27GVEU101G96
         K21U01F KC2021 10 26.24065401 56 44.22 +33 33 23.9          20.2 VuEU101H21
         K21U01F KC2021 10 26.24662101 56 43.08 +33 32 40.3          20.0 VuEU101H21
         K21U01F  C2021 10 26.33021901 56 36.149+33 22 44.74         20.11iUEU101F52
         K21U01F  C2021 10 26.34108101 56 34.055+33 21 25.47         20.28iUEU101F52
         K21U01F  C2021 10 26.36297901 56 29.778+33 18 43.94         20.16iUEU101F52
         K21U01F KC2021 10 26.79819401 55 27.89 +32 21 07.7          19.3 GVEU101B49
         K21U01F KC2021 10 26.80158001 55 27.42 +32 20 41.9          20.2 GVEU101B49
         K21U01F KC2021 10 26.80787001 55 25.43 +32 19 49.6          20.1 GVEU101L06
         K21U01F KC2021 10 26.80830401 55 25.36 +32 19 46.3          20.2 GVEU101L06
         K21U01F KC2021 10 26.80991601 55 25.09 +32 19 33.2          20.1 GVEU101L06
         K21U01F KC2021 10 26.84420301 55 18.89 +32 15 07.1          19.7 GVEU101104
         K21U01F KC2021 10 26.85047301 55 17.74 +32 14 17.7          20.0 GVEU101104
         K21U01F KC2021 10 26.85987701 55 15.94 +32 13 02.5                VEU101104
    
    Observer details:
    104 San Marcello Pistoiese.  Observers P. Bacci, M. Maestripieri.  Measurers
        P. Bacci, L. Tesi, G. Fagioli.  0.60-m reflector + CCD.
    B49 Paus Observatory, Sabadell.  Observer J. Camarasa.  0.30-m f/4.0 reflector
        + CCD.
    F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, I.
        Smith.  Measurers K. Chambers, S. Chastel, T. de Boer, J. Fairlamb, H.
        Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
        Weryk.  1.8-m Ritchey-Chretien + CCD.
    G96 Mt. Lemmon Survey.  Observer H. Groeller.  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.
    L06 Sormano 2 Observatory, Bellagio Via Lattea.  Observers E. Valli, G.
        Ventre.  Measurer P. Sicoli.  0.36-m Schmidt-Cassegrain + CCD.
    
    Orbital elements:
    2021 UF1                                                 Earth MOID = 0.0301 AU
    Epoch 2021 July 5.0 TT = JDT 2459400.5                  Veres                   
    M 169.78974              (2000.0)            P               Q                  
    n   0.94811854     Peri.  288.25366     -0.81767028     -0.55279391             
    a   1.0261896      Node   218.63941     +0.57543697     -0.79303872             
    e   0.2749730      Incl.   14.91634     -0.01695921     -0.25594623             
    P   1.04           H   24.87          G   0.15           U   8                  
    Residuals in seconds of arc
    211025 G96  0.6-  0.2-    211025 G96  0.2+  0.1+    211026 B49  0.4+  0.5+
    211025 G96  0.0   0.3-    211026 H21  0.1-  0.3-    211026 L06  0.1-  0.2-
    211025 G96  0.0   0.2-    211026 H21  0.2-  0.5+    211026 L06  0.0   0.0
    211025 G96  0.8+  0.6+    211026 F52  0.1+  0.2-    211026 L06  0.2+  0.5-
    211025 G96  0.6+  0.3-    211026 F52  0.0   0.1+    211026 104  0.2+  0.2-
    211025 G96  0.1-  0.2-    211026 F52  0.1-  0.0     211026 104  0.4+  0.2+
    211025 G96  0.6-  0.6+    211026 B49  1.0-  0.0     211026 104  0.0   0.1-
    
    Ephemeris:
    2021 UF1                 a,e,i = 1.03, 0.27, 15                  q = 0.7440
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 09 26    02 14 31.9 +47 39 20   0.2747  1.1860   126.3    43.0    24.1
    ...
    2021 10 11    02 15 49.3 +46 39 20   0.1725  1.1315   137.4    36.6    22.8
    ...
    2021 10 19    02 09 26.5 +42 51 33   0.1213  1.0989   146.1    30.3    21.8
    ...
    2021 10 25    01 59 34.6 +35 53 18   0.08535 1.0730   156.1    22.1    20.7
    2021 10 26    01 57 19.3 +34 02 49   0.07969 1.0686   158.3    20.1    20.5
    2021 10 27    01 54 50.7 +31 54 29   0.07417 1.0642   160.6    18.0    20.3
    ...
    2021 11 02    01 33 29.7 +08 28 23   0.04598 1.0369   165.2    14.1    19.1
    ...
    2021 11 10    00 24 29.8 -55 21 56   0.04376 0.9992   100.5    77.1    20.8
    ...
    2021 11 25    16 49 38.4 -76 15 42   0.1170  0.9266    55.9   118.1    24.7
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-U101
    


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