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Minor Planet Center

MPEC 2009-H35 : 2009 HL21

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M.P.E.C. 2009-H35                                Issued 2009 Apr. 21, 22:10 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://www.cfa.harvard.edu/iau/mpc.html  ISSN 1523-6714

                                   2009 HL21

Observations:
     K09H21L* C2009 04 20.92262 13 45 03.98 +04 21 49.2                 EH035621
     K09H21L  C2009 04 20.92809 13 45 05.54 +04 21 19.7                 EH035621
     K09H21L  C2009 04 20.93084 13 45 06.29 +04 21 05.8                 EH035621
     K09H21L  C2009 04 20.93358 13 45 07.07 +04 20 51.0                 EH035621
     K09H21L  C2009 04 20.93632 13 45 07.79 +04 20 38.0                 EH035621
     K09H21L  C2009 04 20.93907 13 45 08.60 +04 20 22.9                 EH035621
     K09H21L  C2009 04 20.94180 13 45 09.38 +04 20 08.2                 EH035621
     K09H21L  C2009 04 20.94455 13 45 10.09 +04 19 54.8          17.4 C EH035621
     K09H21L  C2009 04 21.86230 13 49 38.17 +03 05 25.1          17.5 R EH035113
     K09H21L  C2009 04 21.86376 13 49 38.51 +03 05 18.3          17.7 R EH035113
     K09H21L  C2009 04 21.86521 13 49 38.87 +03 05 11.5          17.6 R EH035113
     K09H21L  C2009 04 21.86667 13 49 39.22 +03 05 05.0          17.4 R EH035113
     K09H21L  C2009 04 21.87129 13 49 40.76 +03 04 45.4          17.4 V EH035A17
     K09H21L  C2009 04 21.87325 13 49 41.25 +03 04 36.5          17.3 V EH035A17
     K09H21L  C2009 04 21.87751 13 49 42.28 +03 04 16.8          17.7 V EH035A17
     K09H21L  C2009 04 21.88182 13 49 43.33 +03 03 57.4          17.6 V EH035A17
     K09H21L  C2009 04 21.88619 13 49 44.39 +03 03 37.5          17.7 V EH035A17
     K09H21L  C2009 04 21.88650 13 49 41.59 +03 03 45.4          17.7   EH035114
     K09H21L  C2009 04 21.88741 13 49 41.85 +03 03 41.3          17.9   EH035114
     K09H21L  C2009 04 21.89047513 49 44.83 +03 03 20.2          17.5 V EH035B03
     K09H21L  C2009 04 21.89226 13 49 46.47 +03 03 07.1                 EH035J95
     K09H21L  C2009 04 21.89404 13 49 46.90 +03 02 58.7                 EH035J95
     K09H21L  C2009 04 21.89439013 49 45.78 +03 03 02.7          17.5 V EH035B03
     K09H21L  C2009 04 21.89582 13 49 47.33 +03 02 51.2          17.9 R EH035J95
     K09H21L  C2009 04 21.89830613 49 46.73 +03 02 44.5          17.3 V EH035B03
     K09H21L  C2009 04 21.89863 13 49 47.03 +03 02 43.1          18.0 V EH035B36
     K09H21L  C2009 04 21.90168 13 49 47.76 +03 02 28.9          18.1 V EH035B36
     K09H21L  C2009 04 21.90222413 49 47.65 +03 02 26.9          17.6 V EH035B03
     K09H21L  C2009 04 21.90473 13 49 48.47 +03 02 15.3          18.0 V EH035B36
     K09H21L  C2009 04 21.90983 13 49 50.06 +03 01 49.8          18.2 V EH035611
     K09H21L  C2009 04 21.91145 13 49 50.46 +03 01 42.8          18.0 V EH035611
     K09H21L  C2009 04 21.91307 13 49 50.84 +03 01 35.3          18.0 V EH035611

Observer details:
113 Volkssternwarte Drebach, Schoenbrunn.  Observers G. Lehmann, K. Lehmann.
    0.5-m f/6.7 reflector + CCD.
114 Engelhardt Observatory, Zelenchukskaya Station.  Observers =. Kryachko,
    B. Satovski.  Measurer T. Kryachko.  0.3-m f/7.7 reflector + CCD.
611 Starkenburg.  Observers M. Busch, A. Heller.  0.45-m f/4.4 reflector + CCD.
621 Bergisch Gladbach.  Observer W. Bickel.  0.60-m f/5.2 reflector + CCD.
A17 Guidestar Observatory, Weinheim.  Observers M. Emmerich, S. Melchert.
    0.36-m f/6 Schmidt-Cassegrain + CCD.
B03 Alter Satzberg, Vienna.  Observer M. Pietschnig.  0.35-m f/5.8
    Schmidt-Cassegrain + CCD.
B36 Redshed Observatory, Kallham.  Observer H. Bachleitner.  0.32-m f/5
    reflector + CCD.
J95 Great Shefford.  Observer P. Birtwhistle.  0.40-m f/6.0 Schmidt-Cassegrain
    + CCD.

Orbital elements:
2009 HL21                                                Earth MOID = 0.0107 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5                 MPC
M  47.76659              (2000.0)            P               Q
n   0.45241772     Peri.    2.50534     -0.88806953     -0.45961646
a   1.6805173      Node   150.12678     +0.42145199     -0.82201989
e   0.4546862      Incl.    1.06195     +0.18360480     -0.33620828
P   2.18           H   22.4           G   0.15           U   8
Residuals in seconds of arc
090420 621  0.3-  0.8+    090421 113  0.3-  0.1-    090421 B03  0.0   0.3+
090420 621  0.2+  0.3-    090421 A17  0.2+  0.0     090421 J95  0.2-  0.3+
090420 621  0.1-  0.1+    090421 A17  0.3+  0.0     090421 B03  0.2+  0.1-
090420 621  0.2+  0.5-    090421 A17  0.2+  0.3-    090421 B36  0.3+  0.1+
090420 621  0.5-  0.7+    090421 A17  0.3+  0.1-    090421 B36  0.4+  0.3-
090420 621  0.2+  0.2-    090421 A17  0.3+  0.1-    090421 B03  0.1+  0.1+
090420 621  0.5+  0.7-    090421 114  0.6-  0.0     090421 B36  0.1+  0.0
090420 621  0.3-  0.1+    090421 114  0.1+  0.1+    090421 611  0.0   0.3-
090421 113  0.0   0.1+    090421 B03  0.2-  0.0     090421 611  0.2+  0.0
090421 113  0.3-  0.0     090421 J95  0.0   0.1+    090421 611  0.1+  0.1-
090421 113  0.2-  0.2-    090421 J95  0.1-  0.2-

Ephemeris:
2009 HL21                a,e,i = 1.68, 0.45, 1                   q = 0.9164
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2009 04 19    13 33.34   +07 35.9    0.0602   1.061   161.0    18.0    17.4
2009 04 29    14 10.74   -03 01.3    0.116    1.120   168.1    10.7    18.6
2009 05 09    14 24.11   -07 05.1    0.179    1.184   165.9    12.0    19.8
2009 05 19    14 32.09   -09 24.0    0.251    1.250   160.0    16.1    20.8
2009 05 29    14 39.16   -11 04.6    0.332    1.318   152.9    20.5    21.6

Sonia Keys                   (C) Copyright 2009 MPC           M.P.E.C. 2009-H35

Read MPEC 2009-H34 Read MPEC 2009-H36


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