• MPC Preparation (Info)

  • MPEC 2018-A68 : 2015 BS509

    The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.

    A form allowing access to any MPEC is at the bottom of this page.


    Read MPEC 2018-A67 Read MPEC 2018-A69


    M.P.E.C. 2018-A68                                Issued 2018 Jan. 14, 19:39 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
    
                                      2015 BS509
    
                              Revision to MPEC 2015-B129
    
    Additional Observations:
         K15Bo9S  C2018 01 13.31760 08 36 33.26 -21 07 33.2          18.4 RoEA068926
         K15Bo9S  C2018 01 13.32100 08 36 33.53 -21 07 06.3          18.4 RoEA068926
         K15Bo9S  C2018 01 13.32437 08 36 33.81 -21 06 39.4          18.7 RoEA068926
         K15Bo9S |C2018 01 14.14267 08 37 53.38 -19 14 43.1          18.4 GUEA068807
         K15Bo9S |C2018 01 14.14292 08 37 53.40 -19 14 41.0          18.4 GUEA068807
         K15Bo9S |C2018 01 14.14318 08 37 53.42 -19 14 38.9          18.4 GUEA068807
         K15Bo9S |C2018 01 14.14344 08 37 53.45 -19 14 36.7          18.4 GUEA068807
         K15Bo9S |C2018 01 14.14369 08 37 53.47 -19 14 34.6          18.4 GUEA068807
    
    Observer details:
    807 Cerro Tololo.  Observers T. Linder, R. Holmes.  1.00-m f/10.0 astrograph
        + CCD.
    926 Tenagra II Observatory.  Observers M. Schwartz, P. R. Holvorcem.  Measurer
        M. Schwartz.  0.81-m f/7 Ritchey-Chretien + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    180113 926 1.26+ 0.54+    180114 807 1.29+ 0.54+    MPO349336   -0.26 day
    
    Orbital elements:
    2015 BS509                                               Earth MOID = 0.1797 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M 320.82963              (2000.0)            P               Q
    n   0.32463917     Peri.  337.12780     -0.29324420     -0.85597882
    a   2.0966959      Node   127.07693     +0.93876496     -0.34208884
    e   0.4569328      Incl.   32.25603     +0.18090933     +0.38765382
    P   3.04           H   20.2           G   0.15           U   3
    Residuals in seconds of arc
    150122 703  0.0   1.4+    150123 H36  0.0   0.2-    150126 G45  0.4+  0.0
    150122 703  0.0   0.5-    150123 H36  0.0   0.2+    150204 705  0.6-  0.8-
    150122 703  0.2-  0.3-    150123 H36  0.3+  0.5+    150204 705  0.1-  0.7+
    150122 703  0.4+  0.3+    150123 H36  0.3-  1.2-    150205 J95  0.4+  0.3+
    150122 703  0.7+  1.0+    150124 203  0.6-  0.3+    150205 J95  0.1+  0.3-
    150122 703  0.9+  0.3+    150124 203  0.4-  0.1-    150205 J95  0.6-  0.3-
    150122 703  0.3-  1.2-    150124 300  0.7+  0.4+    150212 F51  0.2+  0.0
    150122 703  0.4-  0.4-    150124 300  0.7+  0.6+    150212 F51  0.1+  0.0
    150122 703  0.1+  0.6+    150124 300  0.2+  0.4+    150212 F51  0.0   0.1-
    150122 O75  0.6-  0.9-    150124 300  1.1+  0.4+    150212 F51  0.0   0.2+
    150122 O75  0.0   0.1+    150125 Z99  0.4-  0.1-    180113 926  0.1-  0.3-
    150123 958  0.3-  0.3+    150125 Z99  0.5-  0.1-    180113 926  0.1-  0.3-
    150123 958  0.4+  0.8+    150125 Z99  0.1-  0.0     180113 926  0.0   0.2-
    150123 J95  0.3-  0.0     150126 G45  0.2+  0.2-    180114 807  0.1+  0.1+
    150123 958  0.0   0.5+    150126 G45  0.2+  0.7+    180114 807  0.1+  0.1+
    150123 J95  0.0   0.4-    150126 G45  0.2-  0.3+    180114 807  0.0   0.0
    150123 J95  0.2-  0.0     150126 G45  0.1-  0.1-    180114 807  0.1+  0.1+
    150123 H36  0.6+  0.2-    150126 G45  0.7-  0.2+    180114 807  0.1+  0.1+
    
    Ephemeris:
    2015 BS509               a,e,i = 2.10, 0.46, 32                  q = 1.1386
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 12 15    07 50 54.5 -48 22 18   0.4399  1.1566   101.7    56.5    20.8
    ...
    2017 12 30    08 14 06.6 -41 12 39   0.3172  1.1393   111.7    53.3    19.9
    ...
    2018 01 07    08 26 33.0 -32 30 03   0.2548  1.1396   122.2    46.9    19.3
    ...
    2018 01 13    08 36 02.2 -21 48 46   0.2151  1.1442   134.3    38.0    18.7
    2018 01 14    08 37 38.1 -19 34 48   0.2095  1.1453   136.8    36.0    18.6
    2018 01 15    08 39 14.3 -17 12 28   0.2043  1.1465   139.4    33.9    18.5
    ...
    2018 01 21    08 49 01.1 -00 14 58   0.1834  1.1559   157.7    18.8    17.8
    ...
    2018 01 29    09 02 35.0 +25 07 11   0.1906  1.1738   171.8     6.9    17.5
    ...
    2018 02 13    09 29 10.6 +54 29 23   0.2916  1.2222   138.9    32.1    19.3
    
    A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-A68
    

    Read MPEC 2018-A67 Read MPEC 2018-A69


    MPEC number:

    Enter an MPEC number in one of the following forms:

    • 1997-B01 (the full form)
    • J97B01 (the packed version of the full form)
    • B01 (the abbreviated form)