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  • MPEC 2001-H20 : 2001 HA4

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    M.P.E.C. 2001-H20                                Issued 2001 Apr. 19, 19:14 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.
    
                 Prepared using the Tamkin Foundation Computer Network
    
                                  MPC@CFA.HARVARD.EDU
              URL http://cfa-www.harvard.edu/iau/mpc.html  ISSN 1523-6714
    
                                       2001 HA4
    
    Observations:
         K01H04A* C2001 04 16.13305 08 17 18.97 +10 49 20.8          18.1        704
         K01H04A  C2001 04 16.14616 08 17 26.34 +10 48 27.3          18.3        704
         K01H04A  C2001 04 16.15985 08 17 34.01 +10 47 32.3          18.4        704
         K01H04A  C2001 04 16.17271 08 17 41.18 +10 46 39.5          18.6        704
         K01H04A  C2001 04 16.18680 08 17 49.09 +10 45 42.5          18.4        704
         K01H04A  C2001 04 17.12651 08 26 27.36 +09 43 28.6          18.1        704
         K01H04A  C2001 04 17.13973 08 26 34.31 +09 42 37.1          18.6        704
         K01H04A  C2001 04 17.15157 08 26 40.64 +09 41 52.1          18.1 V      926
         K01H04A  C2001 04 17.15248 08 26 41.12 +09 41 48.5          18.1 V      926
         K01H04A  C2001 04 17.15334 08 26 41.61 +09 41 44.3          18.0 V      926
         K01H04A  C2001 04 17.15402 08 26 41.88 +09 41 41.4          18.2        704
         K01H04A  C2001 04 17.16762 08 26 49.04 +09 40 48.3          18.2        704
         K01H04A  C2001 04 17.90845 08 33 16.00 +08 53 28.3                      046
         K01H04A  C2001 04 17.91457 08 33 19.16 +08 53 06.0          17.2 R      046
         K01H04A  C2001 04 17.91521 08 33 19.51 +08 53 02.1                      046
         K01H04A  C2001 04 17.91624 08 33 20.00 +08 52 58.9                      046
         K01H04A  C2001 04 17.91789 08 33 20.81 +08 52 52.3          17.4 R      046
         K01H04A  C2001 04 18.13112 08 35 09.51 +08 39 40.8          18.2        704
         K01H04A  C2001 04 18.13141 08 35 09.74 +08 39 39.7          17.6        704
         K01H04A  C2001 04 18.14449 08 35 16.19 +08 38 51.2          18.2        704
         K01H04A  C2001 04 18.14564 08 35 16.75 +08 38 46.5          18.7        704
         K01H04A  C2001 04 18.15755 08 35 22.71 +08 38 02.6          18.4        704
         K01H04A  C2001 04 18.15915 08 35 23.49 +08 37 56.0          18.4        704
         K01H04A  C2001 04 18.17061 08 35 29.20 +08 37 13.7          18.3        704
         K01H04A  C2001 04 18.17237 08 35 30.07 +08 37 07.6          18.4        704
         K01H04A  C2001 04 18.18367 08 35 35.65 +08 36 24.9          18.6        704
         K01H04A  C2001 04 18.18612 08 35 36.89 +08 36 15.3          19.1        704
         K01H04A  C2001 04 18.19755 08 35 42.40 +08 35 31.4          17.5 R      649
         K01H04A  C2001 04 18.20201 08 35 44.68 +08 35 14.6          17.8 R      649
         K01H04A  C2001 04 18.20540 08 35 46.35 +08 35 02.1          17.5 R      649
         K01H04A  C2001 04 18.20748 08 35 47.34 +08 34 54.2          17.0 R      649
         K01H04A  C2001 04 18.89255 08 41 24.56 +07 53 10.9                      118
         K01H04A  C2001 04 18.89359 08 41 25.00 +07 53 07.1          17.8 R      118
         K01H04A  C2001 04 18.89860 08 41 27.46 +07 52 49.3                      118
         K01H04A  C2001 04 18.89973 08 41 27.98 +07 52 44.9                      118
         K01H04A  C2001 04 19.12160 08 43 14.54 +07 39 36.8          17.7 R      649
         K01H04A  C2001 04 19.12437 08 43 15.84 +07 39 26.8          17.6 R      649
         K01H04A  C2001 04 19.12790 08 43 17.48 +07 39 14.4          17.8 R      649
         K01H04A  C2001 04 19.13116 08 43 19.01 +07 39 02.7          17.7 R      649
    
    Observer details:
    046 Klet.  Observers M. Tichy, Z. Moravec.  0.57-m f/5.2 reflector + CCD.
    118 Modra.  Observers S. Gajdos, J. Toth.  0.6-m f/5.5 reflector + CCD.
    649 Powell Observatory, Louisburg.  Observers S. Granger, K. Smalley,
        D. Young.  Measurer S. Granger.  0.75-m Newtonian + CCD.
    704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, F. Shelly,
        M. Bezpalko, R. Huber, L. Manguso, S. Adams.  Measurers J. Stuart,
        R. Sayer, J. B. Evans, H. Viggh.  1.0-m f/2.15 reflector + CCD.
    926 Tenagra II Observatory.  Observer M. Schwartz.  Measurer P. R. Holvorcem.
        0.5-m f/10 Ritchey-Chretien + CCD.
    
    Orbital elements:
    2001 HA4                                                             PHA 0.008
    Epoch 2001 Apr. 1.0 TT = JDT 2452000.5                  Spahr
    M   7.63526              (2000.0)            P               Q
    n   0.20670420     Peri.   92.00171     -0.00596169     -0.99994206
    a   2.8329344      Node   358.26228     +0.75901391     +0.00131093
    e   0.8054779      Incl.   17.19268     +0.65104711     -0.01068487
    P   4.77           H   17.6           G   0.15
    From 39 observations 2001 Apr. 16-19.
    
    Ephemeris:
    2001 HA4                 a,e,i = 2.83, 0.81, 17                  q = 0.5511
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2001 04 11    07 20.64   +17 03.9    0.321    1.043    88.2    73.9    17.8
    2001 04 21    08 57.34   +05 53.8    0.423    1.180   103.9    55.8    18.1
    2001 05 01    09 52.37   -01 02.8    0.573    1.315   109.4    46.3    18.7
    2001 05 11    10 27.80   -05 15.6    0.747    1.445   109.7    41.2    19.4
    2001 05 21    10 53.91   -08 05.3    0.936    1.571   107.4    37.9    20.0
    2001 05 31    11 15.24   -10 12.5    1.135    1.692   103.8    35.6    20.5
    2001 06 10    11 33.87   -11 57.0    1.341    1.809    99.4    33.6    20.9
    2001 06 20    11 50.91   -13 28.6    1.554    1.923    94.5    31.8    21.3
    2001 06 30    12 06.98   -14 53.0    1.771    2.032    89.4    30.0    21.7
    2001 07 10    12 22.42   -16 13.1    1.990    2.138    84.0    28.2    22.0
    
    Timothy B. Spahr             (C) Copyright 2001 MPC           M.P.E.C. 2001-H20
    

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