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  • MPEC 1999-F17 : 1991 VB

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    M.P.E.C. 1999-F17                                Issued 1999 Mar. 20, 18:40 UT
    
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets and routine data on comets.  They are published
       on behalf of Commission 20 of the International Astronomical Union by the
              Minor Planet Center, Smithsonian Astrophysical Observatory,
                              Cambridge, MA 02138, U.S.A.
    
                 BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
              URL http://cfa-www.harvard.edu/iau/mpc.html  ISSN 1523-6714
    
                                        1991 VB
    
    Observations:
         J91V00B 3C1999 02 06.49106 09 43 33.61 +02 28 32.5                      568
         J91V00B 3C1999 02 06.49616 09 43 33.16 +02 28 34.2                      568
         J91V00B 3C1999 02 07.47078 09 42 20.51 +02 33 35.0                      568
         J91V00B 3C1999 02 07.47636 09 42 20.14 +02 33 36.0                      568
         J91V00B 3C1999 02 08.37334 09 41 13.38 +02 38 22.1                      568
         J91V00B 3C1999 02 08.37789 09 41 13.05 +02 38 24.0                      568
    
    Observer details:
    568 Mauna Kea.  Observers C. Veillet, J. Anderson.  Measurers C. Veillet,
        J. Anderson, W. Morgan, T. Parker.  3.6-m Canada-France-Hawaii reflector
        + CFH12k CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    990206 568 0.25- 0.09+    990208 568 0.25- 0.09+    MPC 21797   +0.53 day
    
    Orbital elements:
    1991 VB
    Epoch 1999 Jan. 22.0 TT = JDT 2451200.5                 Williams
    M  59.21482              (2000.0)            P               Q
    n   0.29449129     Peri.  134.55373     +0.85226752     -0.51170561
    a   2.2374555      Node   256.50891     +0.44269091     +0.81615065
    e   0.4115547      Incl.    6.41322     +0.27868410     +0.26843153
    P   3.35           H   17.0           G   0.15           U   2
    Residuals in seconds of arc
    910915 675  1.1+  0.5+    911106 675  0.2-  0.6+    920202 688  0.6+  0.4+
    910916 675  1.0-  0.1+    911110 675  0.1+  0.8-    920202 688  0.3+  0.8+
    911101 675  1.0-  0.9-    911110 675  0.3+  0.4+    920205 688  0.6-  1.1+
    911101 675 (0.4+  3.0+)   911202 675  0.3+  0.7-    920205 688  0.7+  1.4+
    911102 675 (2.2-  4.9+)   911203 675 (0.8-  3.5+)   990206 568  0.3-  0.0
    911102 675 (0.4+  3.8+)   911207 675  0.0   0.6+    990206 568  1.1-  0.1+
    911102 675 (0.7-  4.7+)   911207 675  0.1-  1.4-    990207 568  0.1+  0.6-
    911103 675 (0.0   2.7+)   920113 413  0.3-  0.4+    990207 568  1.0+  1.4-
    911105 675 (0.2-  3.1+)   920113 413  0.2-  0.3-    990208 568  0.3-  0.1-
    911105 675  0.8+  0.4+    920113 413  0.1-  0.4+    990208 568  0.0   0.4+
    
    Ephemeris:
    1991 VB                  a,e,i = 2.24, 0.41, 6                   q = 1.3166
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    1999 03 13    09 09.89   +05 54.8    1.472    2.355   144.9    14.1    20.5
    1999 03 18    09 07.73   +06 20.2    1.531    2.377   139.5    15.8    20.7
    1999 03 23    09 06.39   +06 42.7    1.594    2.399   134.3    17.3    20.8
    1999 03 28    09 05.84   +07 02.0    1.662    2.420   129.3    18.6    21.0
    1999 04 02    09 06.03   +07 18.0    1.733    2.442   124.4    19.7    21.1
    1999 04 07    09 06.92   +07 30.7    1.808    2.463   119.8    20.7    21.3
    1999 04 12    09 08.45   +07 40.1    1.884    2.483   115.3    21.4    21.4
    1999 04 17    09 10.57   +07 46.3    1.963    2.504   110.9    22.0    21.5
    1999 04 22    09 13.24   +07 49.3    2.044    2.524   106.7    22.4    21.6
    1999 04 27    09 16.40   +07 49.2    2.126    2.544   102.6    22.7    21.7
    1999 05 02    09 19.99   +07 46.2    2.210    2.563    98.7    22.9    21.9
    1999 05 07    09 23.96   +07 40.3    2.293    2.582    94.9    22.9    22.0
    1999 05 12    09 28.29   +07 31.8    2.377    2.601    91.1    22.8    22.0
    
    Gareth V. Williams           (C) Copyright 1999 MPC           M.P.E.C. 1999-F17
    

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