• Processing (Info)

    • MPEC 1999-H22 : 1999 HW1

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    Read MPEC 1999-H21 Read MPEC 1999-H23 

    M.P.E.C. 1999-H22                                Issued 1999 Apr. 24, 14:42 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

                                   1999 HW1

Observations:
     J99H01W* C1999 04 19.24330 13 38 39.36 +10 21 29.1          19.1        704
     J99H01W  C1999 04 19.25957 13 38 37.22 +10 20 28.0          19.6        704
     J99H01W  C1999 04 19.27589 13 38 34.96 +10 19 25.5          19.9        704
     J99H01W  C1999 04 20.87240 13 35 10.73 +08 37 42.8                      557
     J99H01W  C1999 04 20.87367 13 35 10.54 +08 37 38.1                      557
     J99H01W  C1999 04 20.87487 13 35 10.46 +08 37 33.0          19.0 V      557
     J99H01W  C1999 04 21.51999 13 33 49.96 +07 57 04.0          18.9 R      426
     J99H01W  C1999 04 21.52668 13 33 49.05 +07 56 39.0          19.0 R      426
     J99H01W  C1999 04 22.31843 13 32 11.03 +07 05 59.2                      658
     J99H01W  C1999 04 22.32277 13 32 10.46 +07 05 41.8                      658
     J99H01W  C1999 04 22.32627 13 32 10.02 +07 05 29.3                      658
     J99H01W  C1999 04 22.84601 13 31 07.70 +06 32 38.2                      557
     J99H01W WC1999 04 22.84741 13 31 07.54 +06 32 32.9                      557
     J99H01W  C1999 04 22.84881 13 31 07.37 +06 32 28.0                      557
     J99H01W  C1999 04 23.25163 13 30 19.06 +06 07 05.4                      658
     J99H01W  C1999 04 23.25376 13 30 18.78 +06 06 57.1                      658
     J99H01W  C1999 04 23.25551 13 30 18.58 +06 06 51.1                      658
     J99H01W  C1999 04 23.55459 13 29 43.16 +05 48 32.4          19.6 R      426
     J99H01W  C1999 04 23.55855 13 29 42.62 +05 48 17.9          19.0 R      426
     J99H01W  C1999 04 23.56296 13 29 42.10 +05 48 00.7          19.2 R      426
     J99H01W  C1999 04 23.56713 13 29 41.56 +05 47 45.8          19.5 R      426
     J99H01W  C1999 04 23.84264 13 29 09.49 +05 29 57.6                      557
     J99H01W  C1999 04 23.84545 13 29 09.12 +05 29 48.1                      557
     J99H01W WC1999 04 23.84685 13 29 08.95 +05 29 43.1                      557
     J99H01W  C1999 04 23.92602 13 28 59.21 +05 24 44.7          18.1 R      046
     J99H01W  C1999 04 23.92758 13 28 59.11 +05 24 39.8                      046
     J99H01W  C1999 04 23.92905 13 28 58.88 +05 24 34.6                      046
     J99H01W  C1999 04 23.93056 13 28 58.76 +05 24 30.9                      046
     J99H01W  C1999 04 23.93203 13 28 58.44 +05 24 23.0                      046
     J99H01W  C1999 04 24.21263 13 28 26.47 +05 06 49.1                      658
     J99H01W  C1999 04 24.21495 13 28 26.22 +05 06 40.6                      658
     J99H01W  C1999 04 24.21793 13 28 25.85 +05 06 29.2                      658

Observer details:
046 Klet.  Observers J. Ticha, M. Tichy.  Measurer M. Tichy.  0.57-m f/5.2
    reflector + CCD.
426 Woomera.  Observer F. B. Zoltowski.  0.30-m f/3.3 Schmidt-Cassegrain + CCD.
557 Ondrejov.  Observer L. Sarounova.  0.65-m f/3.6 reflector + CCD.
658 Dominion Astrophysical Observatory.  Observer D. D. Balam.  1.82-m
    reflector + CCD.
704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, F. Shelly,
    M. Bezpalko, M. Elowitz.  Measurers J. Stuart, H. Viggh, R. Sayer.  1.0-m
    f/2.15 reflector + CCD.

Orbital elements:
1999 HW1
Epoch 1999 Apr. 12.0 TT = JDT 2451280.5                 Williams
M   8.49738              (2000.0)            P               Q
n   0.26658636     Peri.  136.51800     -0.95935372     -0.13459022
a   2.3909882      Node    37.93458     -0.06408012     -0.75209499
e   0.4590463      Incl.   23.79594     +0.27483484     -0.64516555
P   3.70           H   19.8           G   0.15
From 32 observations 1999 Apr. 19-24.

Ephemeris:
1999 HW1                 a,e,i = 2.39, 0.46, 24                  q = 1.2934
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
1999 04 22    13 32.83   +07 26.4    0.374    1.361   159.7    14.9    19.2
1999 04 27    13 23.28   +02 15.3    0.389    1.378   159.4    14.9    19.3
1999 05 02    13 15.23   -02 37.1    0.412    1.395   156.7    16.6    19.5
1999 05 07    13 08.85   -07 03.0    0.441    1.415   152.5    19.2    19.7
1999 05 12    13 04.17   -10 59.3    0.475    1.435   147.9    22.0    20.0
1999 05 17    13 01.16   -14 26.3    0.514    1.456   143.3    24.5    20.3
1999 05 22    12 59.74   -17 26.5    0.558    1.479   138.9    26.7    20.6
1999 05 27    12 59.79   -20 03.2    0.605    1.502   134.8    28.6    20.9
1999 06 01    13 01.14   -22 19.9    0.656    1.526   131.0    30.1    21.1
1999 06 06    13 03.66   -24 19.7    0.709    1.551   127.4    31.3    21.3
1999 06 11    13 07.22   -26 05.4    0.765    1.577   124.1    32.2    21.6
1999 06 16    13 11.72   -27 39.5    0.824    1.603   120.9    32.9    21.8
1999 06 21    13 17.06   -29 04.1    0.884    1.630   118.0    33.4    22.0

Gareth V. Williams           (C) Copyright 1999 MPC           M.P.E.C. 1999-H22

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