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MPEC 1998-H22 : 1998 HN3

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M.P.E.C. 1998-H22                                Issued 1998 Apr. 23, 16:30 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 HN3

Observations:
     J98H03N* C1998 04 19.25874 13 42 44.06 -03 01 08.6          20.5 V      691
     J98H03N  C1998 04 19.27944 13 42 42.41 -03 01 04.9          20.3 V      691
     J98H03N  C1998 04 19.30040 13 42 40.76 -03 01 01.9          20.2 V      691
     J98H03N  C1998 04 20.31437 13 41 22.23 -02 58 28.4          20.0 V      691
     J98H03N  C1998 04 20.31812 13 41 21.90 -02 58 27.9          20.4 V      691
     J98H03N  C1998 04 20.32261 13 41 21.50 -02 58 26.9          20.2 V      691
     J98H03N  C1998 04 21.33057 13 40 02.57 -02 55 59.9          20.1 V      691
     J98H03N  C1998 04 21.33426 13 40 02.23 -02 55 59.1          20.4 V      691
     J98H03N  C1998 04 21.33854 13 40 01.90 -02 55 58.8          20.3 V      691
     J98H03N  C1998 04 22.22309 13 38 52.24 -02 53 53.8          20.1 V      691
     J98H03N  C1998 04 22.24679 13 38 50.29 -02 53 50.3          20.2 V      691
     J98H03N  C1998 04 22.26756 13 38 48.56 -02 53 47.4          20.1 V      691

Observer details:
691 Steward Observatory, Kitt Peak.  Observers J. Larsen, B. Wetzler.  0.9-m
    Spacewatch telescope.

Orbital elements:
1998 HN3
Epoch 1998 Apr. 17.0 TT = JDT 2450920.5                 Williams
M 336.46672              (2000.0)            P               Q
n   0.15481792     Peri.  252.91449     +0.51277274     +0.84875248
a   3.4349617      Node    48.65108     -0.70767231     +0.50304152
e   0.6529986      Incl.    9.90750     -0.48606997     +0.16299831
P   6.37           H   18.0           G   0.15
From 12 observations 1998 Apr. 19-22.

Ephemeris:
1998 HN3                 a,e,i = 3.43, 0.65, 10                  q = 1.1919
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
1998 04 17    13 45.58   -03 07.0    1.107    2.106   172.6     3.5    20.2
1998 04 22    13 39.16   -02 54.3    1.070    2.067   169.7     5.0    20.1
1998 04 27    13 32.43   -02 44.1    1.039    2.027   164.5     7.6    20.2
1998 05 02    13 25.61   -02 37.2    1.014    1.987   158.5    10.7    20.2
1998 05 07    13 18.93   -02 34.8    0.995    1.947   152.4    13.9    20.2
1998 05 12    13 12.60   -02 37.7    0.982    1.907   146.3    17.1    20.3
1998 05 17    13 06.81   -02 46.3    0.973    1.867   140.4    20.2    20.3
1998 05 22    13 01.76   -03 01.3    0.968    1.827   134.5    23.3    20.3
1998 05 27    12 57.58   -03 22.9    0.967    1.787   129.0    26.2    20.4
1998 06 01    12 54.40   -03 51.3    0.969    1.748   123.6    28.9    20.4
1998 06 06    12 52.27   -04 26.4    0.972    1.709   118.6    31.4    20.4
1998 06 11    12 51.24   -05 08.2    0.977    1.670   113.9    33.8    20.5
1998 06 16    12 51.30   -05 56.4    0.983    1.632   109.4    36.0    20.5
1998 06 21    12 52.46   -06 50.8    0.990    1.594   105.3    38.0    20.5
1998 06 26    12 54.71   -07 51.2    0.996    1.557   101.4    39.8    20.5
1998 07 01    12 58.04   -08 57.6    1.002    1.521    97.8    41.5    20.5
1998 07 06    13 02.42   -10 09.5    1.007    1.486    94.5    43.0    20.5
1998 07 11    13 07.82   -11 26.7    1.011    1.452    91.5    44.4    20.5
1998 07 16    13 14.24   -12 48.9    1.014    1.419    88.7    45.7    20.5

1998 07 26    13 30.13   -15 47.2    1.016    1.358    83.9    48.1    20.5
1998 08 05    13 50.21   -19 01.4    1.014    1.304    80.0    50.0    20.5
1998 08 15    14 14.72   -22 26.4    1.007    1.259    77.1    51.7    20.4
1998 08 25    14 44.12   -25 54.7    0.998    1.224    75.1    52.9    20.4
1998 09 04    15 18.94   -29 14.9    0.989    1.202    74.0    53.8    20.3
1998 09 14    15 59.55   -32 10.6    0.983    1.192    73.7    54.1    20.3
1998 09 24    16 45.82   -34 21.4    0.984    1.196    74.0    53.7    20.3
1998 10 04    17 36.58   -35 26.6    0.996    1.214    74.9    52.7    20.3
1998 10 14    18 29.38   -35 11.9    1.022    1.244    76.0    51.1    20.4
1998 10 24    19 21.25   -33 36.1    1.066    1.285    77.0    49.0    20.5
1998 11 03    20 09.64   -30 52.7    1.129    1.335    77.7    46.6    20.7
1998 11 13    20 53.18   -27 23.2    1.211    1.394    77.9    44.0    20.8
1998 11 23    21 31.75   -23 29.1    1.311    1.458    77.3    41.4    21.0
1998 12 03    22 05.85   -19 27.6    1.428    1.528    76.1    38.8    21.2
1998 12 13    22 36.21   -15 29.8    1.560    1.602    74.2    36.3    21.5
1998 12 23    23 03.62   -11 42.1    1.704    1.678    71.6    33.8    21.7
1999 01 02    23 28.70   -08 07.4    1.858    1.755    68.5    31.4    21.9

Gareth V. Williams           (C) Copyright 1998 MPC           M.P.E.C. 1998-H22

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