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MPEC 1998-W20 : 1998 WA2

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M.P.E.C. 1998-W20                                Issued 1998 Nov. 20, 16:41 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

                                   1998 WA2

Observations:
     J98W02A* C1998 11 18.25892 03 43 29.77 +17 14 59.6          17.8        704
     J98W02A  C1998 11 18.30356 03 43 29.43 +17 11 42.2          18.3        704
     J98W02A  C1998 11 18.34803 03 43 29.10 +17 08 24.4          18.7        704
     J98W02A  C1998 11 18.39305 03 43 28.80 +17 05 07.1          17.9        704
     J98W02A  C1998 11 18.43752 03 43 28.60 +17 01 48.6          18.9        704
     J98W02A  C1998 11 18.96920 03 43 31.77 +16 23 17.7          17.7 V      046
     J98W02A  C1998 11 18.97022 03 43 31.77 +16 23 13.5                      046
     J98W02A  C1998 11 18.97130 03 43 31.73 +16 23 08.5                      046
     J98W02A  C1998 11 18.97270 03 43 31.74 +16 23 02.8          17.5 V      046
     J98W02A  C1998 11 19.17684 03 43 33.64 +16 08 38.0          17.9        704
     J98W02A  C1998 11 19.19874 03 43 33.51 +16 07 03.8          18.5        704
     J98W02A  C1998 11 19.22063 03 43 33.40 +16 05 32.8          18.9        704
     J98W02A  C1998 11 19.24257 03 43 33.32 +16 04 01.1          18.6        704
     J98W02A  C1998 11 19.26452 03 43 33.18 +16 02 28.1          18.4        704
     J98W02A  C1998 11 19.52336 03 43 34.61 +15 44 47.2          18.1 R      426
     J98W02A  C1998 11 19.52676 03 43 34.55 +15 44 33.2          17.6 R      426
     J98W02A  C1998 11 19.53088 03 43 34.49 +15 44 15.9          17.9 R      426
     J98W02A  C1998 11 19.80287 03 43 35.51 +15 24 50.8                      557
     J98W02A  C1998 11 19.80414 03 43 35.53 +15 24 46.1                      557
     J98W02A SC1998 11 19.80543 03 43 35.51 +15 24 40.2                      557
     J98W02A  C1998 11 19.92139 03 43 35.21 +15 16 45.7                      106
     J98W02A  C1998 11 19.93981 03 43 35.16 +15 15 31.7          17.5 R      587
     J98W02A  C1998 11 19.94340 03 43 35.15 +15 15 16.8                      587
     J98W02A  C1998 11 19.94741 03 43 35.03 +15 14 59.7                      106
     J98W02A  C1998 11 19.96550 03 43 34.93 +15 13 46.2                      106
     J98W02A  C1998 11 19.97234 03 43 34.84 +15 13 17.9                      106
     J98W02A  C1998 11 20.08760 03 43 34.40 +15 05 26.3          17.8 R      118
     J98W02A  C1998 11 20.08945 03 43 34.41 +15 05 18.7                      118
     J98W02A  C1998 11 20.10461 03 43 34.37 +15 04 16.8                      118

Observer details:
046 Klet.  Observers M. Tichy, Z. Moravec.  Measurer M. Tichy.  0.57-m f/5.2
    reflector + CCD.
106 Crni Vrh.  Observers H. Mikuz, B. Dintinjana, S. Maticic.  0.36-m f/6.7
    Schmidt-Cassegrain + CCD.
118 Modra.  Observers L. Kornos, P. Koleny.  0.6-m f/5.5 reflector + CCD.
426 Woomera.  Observer F. B. Zoltowski.  0.30-m f/3.3 Schmidt-Cassegrain + CCD.
557 Ondrejov.  Observer P. Pravec.  0.65-m f/3.6 reflector + CCD.
587 Sormano.  Observers P. Sicoli, A. Testa.  0.5-m reflector + CCD.
704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, F. Shelly,
    M. Bezpalko.  Measurers J. Stuart, H. Viggh, R. Sayer.  1.0-m f/2.15
    reflector + CCD.

Orbital elements:
1998 WA2
Epoch 1998 Nov. 3.0 TT = JDT 2451120.5                  Williams
M   9.45621              (2000.0)            P               Q
n   0.22562615     Peri.  125.46325     +0.95098970     +0.03117401
a   2.6722459      Node   234.75060     -0.08685337     +0.98178281
e   0.5963837      Incl.   22.13063     +0.29677447     +0.18743185
P   4.37           H   19.5           G   0.15
From 29 observations 1998 Nov. 18-20.

Ephemeris:
1998 WA2                 a,e,i = 2.67, 0.60, 22                  q = 1.0786
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
1998 11 13    03 42.95   +24 30.0    0.272    1.258   170.2     7.7    17.7
1998 11 18    03 43.47   +17 34.4    0.302    1.290   177.0     2.3    17.7
1998 11 23    03 43.73   +12 01.8    0.338    1.323   171.5     6.4    18.2
1998 11 28    03 44.05   +07 44.1    0.381    1.357   164.6    11.1    18.8
1998 12 03    03 44.63   +04 29.4    0.428    1.393   158.5    15.1    19.2
1998 12 08    03 45.57   +02 05.6    0.480    1.429   153.0    18.3    19.6
1998 12 13    03 46.93   +00 22.2    0.535    1.466   148.0    20.9    20.0
1998 12 18    03 48.76   -00 49.3    0.595    1.504   143.4    23.0    20.4
1998 12 23    03 51.10   -01 35.7    0.657    1.542   139.1    24.7    20.7
1998 12 28    03 53.93   -02 02.5    0.723    1.580   135.1    26.1    21.0
1999 01 02    03 57.24   -02 14.2    0.792    1.619   131.3    27.2    21.3
1999 01 07    04 00.99   -02 14.2    0.863    1.658   127.6    28.0    21.5
1999 01 12    04 05.16   -02 05.2    0.937    1.697   124.1    28.7    21.8

Gareth V. Williams           (C) Copyright 1998 MPC           M.P.E.C. 1998-W20

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