• MPC Preparation (Info)

  • MPEC 2018-B75 : 2018 BR1

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    M.P.E.C. 2018-B75                                Issued 2018 Jan. 19, 23:59 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
    
                                       2018 BR1
    
    Observations:
         K18B01R* C2018 01 17.37676 09 57 50.12 +43 27 46.3          17.9 GUEB075703
         K18B01R  C2018 01 17.37704 09 57 51.09 +43 27 40.9          18.4 GUEB075703
         K18B01R  C2018 01 17.37733 09 57 52.28 +43 27 37.4                UEB075703
         K18B01R  C2018 01 17.37762 09 57 53.41 +43 27 32.1          19.0 GUEB075703
         K18B01R  C2018 01 17.39704 09 59 02.56 +43 22 43.9          19.2 GUEB075I52
         K18B01R  C2018 01 17.39717 09 59 02.93 +43 22 41.7          18.6 GUEB075I52
         K18B01R  C2018 01 17.39729 09 59 03.43 +43 22 40.0          18.4 GUEB075I52
         K18B01R  C2018 01 17.39742 09 59 03.81 +43 22 38.1          18.6 GUEB075I52
         K18B01R  C2018 01 17.42263710 00 19.55 +43 15 07.1          18.8 GUEB075H01
         K18B01R  C2018 01 17.42871210 00 39.51 +43 13 30.5          18.5 GUEB075H01
         K18B01R  C2018 01 17.43855810 01 11.40 +43 10 52.8          18.8 GUEB075H01
         K18B01R  C2018 01 17.44551810 01 33.62 +43 09 00.3          18.8 GUEB075H01
         K18B01R  C2018 01 18.34405 10 32 04.97 +41 09 04.0          20.9 GUEB075I52
         K18B01R  C2018 01 18.34481 10 32 05.36 +41 09 01.8          20.5 GUEB075I52
         K18B01R  C2018 01 18.34557 10 32 05.72 +41 09 00.0          20.7 GUEB075I52
         K18B01R  C2018 01 18.34636 10 32 06.12 +41 08 57.2          20.6 GUEB075I52
         K18B01R KC2018 01 19.08918 10 39 52.76 +40 24 59.1          21.4 GUEB075J95
         K18B01R KC2018 01 19.11242 10 39 57.88 +40 24 10.5          21.6 GUEB075J95
         K18B01R KC2018 01 19.13566 10 40 02.89 +40 23 16.5          21.3 GUEB075J95
    
    Observer details:
    703 Catalina Sky Survey.  Observer G. J. Leonard.  Measurers E. J. Christensen,
        D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
        S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly.
        0.68-m Schmidt + 10K CCD.
    H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
        Measurer W. H. Ryan.  2.4-m f/8.9 reflector + CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer R. G. Matheny.
        Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
        J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny,
        R. L. Seaman, F. C. Shelly.  1.0-m reflector + CCD.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.40-m f/6.0 Schmidt-Cassegrain
        + CCD.
    
    Orbital elements:
    2018 BR1                                                 Earth MOID = 0.0011 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M 304.37825              (2000.0)            P               Q
    n   0.54478262     Peri.  319.15303     +0.24944149     -0.96209446
    a   1.4847519      Node   116.13942     +0.91736744     +0.19829847
    e   0.3816736      Incl.    7.05378     +0.31018692     +0.18722168
    P   1.81           H   29.5           G   0.15           U   6
    Residuals in seconds of arc
    180117 703  0.6-  0.6+    180117 I52  0.3-  0.2+    180118 I52  0.1-  0.3+
    180117 703  1.2-  0.7-    180117 H01  0.1+  0.1+    180118 I52  0.2-  0.2-
    180117 703  0.2+  0.1+    180117 H01  0.0   0.1+    180119 J95  0.5-  0.0
    180117 703  1.0+  1.0-    180117 H01  0.1+  0.1+    180119 J95  0.1-  0.1+
    180117 I52  0.5+  0.2+    180117 H01  0.5+  0.1-    180119 J95  0.5+  0.0
    180117 I52  0.4-  0.0     180118 I52  0.3+  0.2-
    180117 I52  0.5+  0.1+    180118 I52  0.3+  0.1-
    
    Ephemeris:
    2018 BR1                 a,e,i = 1.48, 0.38, 7                   q = 0.9181
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 12 20    22 21 51.3 -40 13 24   0.1367  0.9197    58.4   114.3    29.4
    ...
    2018 01 04    22 38 29.7 -40 10 32   0.06208 0.9440    49.3   127.9    28.8
    ...
    2018 01 12    22 48 30.0 -39 40 55   0.02252 0.9677    45.1   134.0    27.3
    ...
    2018 01 18    10 24 42.6 +41 38 15   0.0072150.9896   142.8    37.0    20.3
    2018 01 19    10 39 02.2 +40 30 58   0.01213 0.9934   141.3    38.3    21.4
    2018 01 20    10 44 51.0 +40 00 05   0.01705 0.9973   141.0    38.4    22.2
    ...
    2018 01 26    10 52 23.5 +39 02 59   0.04677 1.0226   143.7    34.8    24.3
    ...
    2018 02 03    10 51 06.7 +38 27 17   0.08722 1.0607   148.2    29.3    25.6
    ...
    2018 02 18    10 42 58.7 +36 49 25   0.1690  1.1421   153.5    22.7    27.0
    
    A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-B75
    

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    MPEC number:

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