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  • MPEC 2020-T160 : 2017 BL32

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    M.P.E.C. 2020-T160                             Issued 2020 October 15, 15:00 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
    
                                    2017 BL32                                
    
    
                               Revision to MPEC 2017-B152                           
    
    Additional Observations:
         K17B32L 2C2020 10 14.18956405 38 48.024+50 09 21.38         20.6 GVET160J04
         K17B32L 2C2020 10 14.19224605 38 47.004+50 09 21.47         21.3 GVET160J04
         K17B32L 2C2020 10 15.20951705 32 34.192+50 10 04.88         20.7 GVET160J04
         K17B32L 2C2020 10 15.21600905 32 31.716+50 10 05.18         20.5 GVET160J04
         K17B32L 2C2020 10 15.22250305 32 29.232+50 10 05.42         20.9 GVET160J04
    
    Observer details:
    J04 ESA Optical Ground Station, Tenerife.  Observer P. Ruiz.  Measurers M.
        Micheli, D. Koschny, L. Conversi, A. Knofel, M. Busch, E. Schwab.  1.0-m
        f/4.4 reflector + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    201014 J04 0.00+ 0.06+    201015 J04 0.00+ 0.06+    MPO411583   -0.08 days
    
    Orbital elements:
    2017 BL32                                                Earth MOID = 0.1552 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
    M  80.77051              (2000.0)            P               Q
    n   0.60346851     Peri.  349.35055     +0.00907114     +0.98245536
    a   1.3868611      Node   280.98035     -0.90293162     -0.07200016
    e   0.6980740      Incl.   10.93825     -0.42968849     +0.17203907
    P   1.63           H   20.5           G   0.15           U   2
    Residuals in seconds of arc
    170129 G96  0.2+  0.2-    170131 F51  0.1+  0.1+    170224 474  0.4-  0.4-
    170129 G96  0.4+  0.4+    170131 F51  0.1+  0.1-    170224 474  0.2-  0.1-
    170129 G96  0.1-  0.3-    170131 F51  0.1+  0.0     170225 691  0.8+  0.0
    170129 G96  0.6-  0.2-    170131 F51  0.1-  0.0     170225 691  0.5-  0.2+
    170129 H01  0.0   0.1+    170204 Y28  0.1-  0.1+    170225 691  0.0   0.3-
    170129 H01  0.0   0.0     170204 Y28  0.0   0.0     170226 H21  0.0   0.4-
    170129 G96  0.3-  0.5-    170204 Y28  0.0   0.1+    170226 H21  0.1-  0.4-
    170129 H01  0.1-  0.0     170204 Y28  0.0   0.1+    170226 H21  0.1-  0.5-
    170129 G96  0.4+  0.6-    170204 691  0.2-  0.7+    170303 H21  0.0   0.8-
    170129 G96  0.0   0.1-    170204 691  0.0   0.7-    170303 H21  0.0   0.1-
    170129 H01  0.0   0.0     170204 691  0.7-  0.2-    170303 H21  0.1+  0.5-
    170129 I52  0.4-  0.0     170206 807  0.5-  0.2+    170303 H21  0.0   0.1+
    170129 I52  0.3-  0.0     170206 807  0.1-  0.0     170303 H21  0.3+  0.5-
    170129 I52  0.0   0.1-    170206 807  0.1-  0.2+    170303 H21  0.1-  0.1-
    170129 I52  0.5+  0.0     170207 705  0.0   0.3+    170304 807  0.2-  0.1+
    170129 K88  0.2-  0.2+    170207 705  0.2+  0.2+    170304 807  0.2-  0.2+
    170129 K88  0.3-  0.4+    170207 705  0.1+  0.0     170304 807  0.1-  0.0
    170129 K88  0.0   0.4+    170214 807  0.3+  0.3+    170308 H21  0.3+  0.0
    170130 I52  1.1+  0.3-    170214 807  0.2+  0.2+    170308 H21  0.4+  0.1+
    170130 I52  0.1-  0.7+    170214 807  0.6+  0.6-    170308 H21  0.2+  0.1-
    170130 I52  1.3-  0.3-    170214 204  0.2-  0.1+    170320 807  0.2-  0.5+
    170130 Z84  0.1-  0.2+    170214 204  0.3-  0.5+    170320 807  0.3-  0.5+
    170130 Z84  0.1-  0.2+    170223 H21  0.3+  0.0     170320 807  0.1-  0.5+
    170130 Z84  0.1+  0.3+    170223 H21  0.2+  0.4+    201014 J04  0.2+  0.2+
    170131 I52  0.3+  0.0     170223 H21  0.2+  0.3+    201014 J04  0.0   0.0
    170131 I52  0.5-  0.2-    170224 474  0.2+  0.2+    201015 J04  0.1+  0.4-
    170131 I52  0.3+  0.1+    170224 474  0.3-  0.2-    201015 J04  0.0   0.0
    170131 I52  0.1-  0.7+    170224 474  0.3+  0.2-    201015 J04  0.2-  0.2+
    
    Ephemeris:
    2017 BL32                a,e,i = 1.39, 0.70, 11                  q = 0.4187
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 09 15    07 58 05.9 +42 48 45   0.4528  0.8866    61.8    91.4    21.8
    ...
    2020 09 30    06 54 28.0 +47 55 08   0.4609  1.0823    87.3    67.6    21.4
    ...
    2020 10 08    06 14 26.6 +49 35 24   0.4631  1.1788   101.0    56.3    21.2
    ...
    2020 10 14    05 39 56.8 +50 08 56   0.4667  1.2476   111.7    48.0    21.1
    2020 10 15    05 33 51.6 +50 09 57   0.4676  1.2587   113.5    46.6    21.1
    2020 10 16    05 27 41.7 +50 09 28   0.4687  1.2698   115.3    45.2    21.1
    ...
    2020 10 22    04 49 44.1 +49 32 46   0.4784  1.3347   126.2    37.0    21.0
    ...
    2020 10 30    04 00 34.7 +47 10 45   0.5031  1.4169   140.3    26.6    21.0
    ...
    2020 11 14    02 51 22.4 +39 37 13   0.5969  1.5586   157.9    13.8    21.1
    
    A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-T160
    


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