• MPC Preparation (Info)

  • MPEC 2021-B75 : 2021 BT1

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    M.P.E.C. 2021-B75                              Issued 2021 January 19, 19:40 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 BT1                                 
    
    
    Observations:
         K21B01T  C2021 01 11.26095 07 43 31.54 +03 13 00.4          21.1 GVEB075G96
         K21B01T  C2021 01 11.26605 07 43 31.57 +03 13 43.7                VEB075G96
         K21B01T  C2021 01 18.23529 07 45 21.79 +22 03 06.9          21.0 GVEB075G96
         K21B01T  C2021 01 18.24040 07 45 21.79 +22 04 01.2          20.6 GVEB075G96
         K21B01T* C2021 01 18.25066207 45 21.82 +22 05 50.5          20.92GVEB075G96
         K21B01T  C2021 01 18.25580407 45 21.81 +22 06 45.3          20.54GVEB075G96
         K21B01T  C2021 01 18.26096307 45 21.83 +22 07 40.9          20.61GVEB075G96
         K21B01T  C2021 01 18.26610907 45 21.81 +22 08 35.5          20.96GVEB075G96
         K21B01T KC2021 01 18.37817407 45 21.84 +22 28 25.1          20.87GVEB075V06
         K21B01T KC2021 01 18.37925407 45 21.84 +22 28 36.5          20.52GVEB075V06
         K21B01T KC2021 01 18.38033407 45 21.84 +22 28 47.9          20.76GVEB075V06
         K21B01T KC2021 01 18.47946807 45 22.46 +22 46 15.4          20.63GVEB075V06
         K21B01T KC2021 01 18.48054907 45 22.46 +22 46 26.6          20.79GVEB075V06
         K21B01T KC2021 01 18.48163107 45 22.50 +22 46 37.7          20.74GVEB075V06
         K21B01T |C2021 01 19.20781 07 45 40.34 +24 56 50.2          20.9 GVEB075807
         K21B01T |C2021 01 19.21159 07 45 40.34 +24 57 30.5          21.0 GVEB075807
         K21B01T |C2021 01 19.21521 07 45 40.34 +24 58 09.2          20.9 GVEB075807
    
    Observer details:
    807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes.
        1.00-m f/10.0 astrograph + CCD.
    G96 Mt. Lemmon Survey.  Observers H. Groeller, D. C. Fuls.  Measurers E. J.
        Christensen, B. Gray, D. Rankin, F. C. Shelly, G. A. Farneth, D. C. Fuls,
        A. R. Gibbs, A. D. Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G.
        J. Leonard, T. A. Pruyne, R. L. Seaman, K. W. Wierzchos.  1.5-m reflector
        + 10K 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, T. A. Pruyne, D.
        Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.55-m reflector +
        1K CCD.
    
    Orbital elements:
    2021 BT1                                                 Earth MOID = 0.1641 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
    M 337.32754              (2000.0)            P               Q
    n   0.45908538     Peri.   16.10063     -0.65931910     -0.63065430
    a   1.6642060      Node   117.29434     +0.62897552     -0.76093810
    e   0.3155611      Incl.   27.42869     +0.41193216     +0.15247416
    P   2.15           H   24.3           G   0.15           U   7
    Residuals in seconds of arc
    210111 G96  0.3-  0.1-    210118 G96  0.2+  0.4+    210118 V06  0.1-  0.0
    210111 G96  0.3+  0.1+    210118 G96  0.1-  0.2+    210118 V06  0.3+  0.3-
    210118 G96  0.0   0.0     210118 V06  0.0   0.0     210119 807  0.0   0.0
    210118 G96  0.1-  0.2-    210118 V06  0.1-  0.0     210119 807  0.1-  0.0
    210118 G96  0.2+  0.2-    210118 V06  0.1-  0.0     210119 807  0.1-  0.0
    210118 G96  0.0   0.2-    210118 V06  0.0   0.2+
    
    Ephemeris:
    2021 BT1                 a,e,i = 1.66, 0.32, 27                  q = 1.1390
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 12 20    07 36 05.1 -24 24 59   0.3353  1.2115   126.0    41.1    24.0
    ...
    2021 01 04    07 41 46.9 -10 41 40   0.2237  1.1734   144.9    28.8    22.7
    ...
    2021 01 12    07 43 40.6 +04 59 23   0.1815  1.1584   163.1    14.3    21.7
    ...
    2021 01 18    07 45 15.8 +21 21 35   0.1662  1.1498   176.6     2.9    21.0
    2021 01 19    07 45 36.2 +24 18 57   0.1654  1.1486   174.2     4.9    21.1
    2021 01 20    07 45 58.7 +27 17 19   0.1652  1.1475   171.3     7.5    21.2
    ...
    2021 01 26    07 49 15.7 +44 21 28   0.1741  1.1422   152.8    23.2    21.9
    ...
    2021 02 03    07 58 29.0 +61 37 42   0.2087  1.1391   133.4    39.0    22.7
    ...
    2021 02 18    08 50 14.2 +77 17 55   0.3052  1.1457   113.7    52.2    23.9
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-B75
    


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