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  • MPEC 2021-H92 : 2021 HZ1

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    M.P.E.C. 2021-H92                                Issued 2021 April 20, 10:43 UT
    
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets and routine data on comets.  They are published
        on behalf of Division F 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 https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                    2021 HZ1                                 
    
    
    Observations:
         K21H01Z  C2021 04 04.42800 14 35 03.63 -16 45 07.6          20.6 GVEH092G96
         K21H01Z  C2021 04 04.43316 14 35 04.66 -16 44 42.3          20.9 GVEH092G96
         K21H01Z  C2021 04 04.43833 14 35 05.75 -16 44 16.9          20.6 GVEH092G96
         K21H01Z* C2021 04 19.38259115 46 40.85 +14 31 06.7          20.15GVEH092G96
         K21H01Z  C2021 04 19.39092415 46 43.68 +14 32 28.2          20.09GVEH092G96
         K21H01Z  C2021 04 19.39676915 46 45.64 +14 33 25.1          20.05GVEH092G96
         K21H01Z  C2021 04 19.40254415 46 47.56 +14 34 21.0          20.15GVEH092G96
         K21H01Z KC2021 04 19.47324415 47 11.48 +14 45 48.0          21.15GVEH092I52
         K21H01Z KC2021 04 19.47422815 47 11.88 +14 45 58.0          21.61GVEH092I52
         K21H01Z KC2021 04 19.47521915 47 12.15 +14 46 07.4          20.66GVEH092I52
         K21H01Z 1C2021 04 19.91211 15 49 57.55 +15 56 51.6          20.8 VVEH092033
         K21H01Z 1C2021 04 19.91355 15 49 58.04 +15 57 05.4          20.2 VVEH092033
         K21H01Z 1C2021 04 19.91500 15 49 58.55 +15 57 19.7          20.5 VVEH092033
         K21H01Z hC2021 04 20.07599815 50 55.05 +16 23 45.0          20.8 GVEH092L01
         K21H01Z hC2021 04 20.07806715 50 55.76 +16 24 05.9          20.9 GVEH092L01
         K21H01Z hC2021 04 20.08014415 50 56.49 +16 24 26.0          20.6 GVEH092L01
         K21H01Z hC2021 04 20.08429915 50 57.96 +16 25 06.3          20.7 GVEH092L01
         K21H01Z hC2021 04 20.08644015 50 58.69 +16 25 27.2          20.5 GVEH092L01
         K21H01Z KC2021 04 20.32878815 52 31.85 +17 05 15.3          19.93GVEH092I52
         K21H01Z KC2021 04 20.33005015 52 32.29 +17 05 27.6          19.70GVEH092I52
         K21H01Z KC2021 04 20.33257315 52 33.18 +17 05 52.7          19.67GVEH092I52
    
    Observer details:
    033 Karl Schwarzschild Observatory, Tautenburg.  Observers S. Melnikov, C.
        Hoegner, U. Laux, F. Ludwig, B. Stecklum.  Measurer B. Stecklum.  1.34-m
        f/3 Schmidt + CCD.
    G96 Mt. Lemmon Survey.  Observer K. W. Wierzchos.  Measurers B. Gray, D.
        Rankin, F. C. Shelly, E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R.
        Gibbs, A. D. Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J.
        Leonard, T. A. Pruyne, R. L. Seaman, K. W. Wierzchos.  1.5-m reflector +
        10K CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer D. Rankin.  Measurers
        E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
        H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D.
        Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.0-m reflector +
        CCD.
    L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
        + CCD.
    
    Orbital elements:
    2021 HZ1                                                 Earth MOID = 0.1095 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Bell                    
    M 253.78539              (2000.0)            P               Q                  
    n   0.60810920     Peri.   65.83240     -0.09925573     +0.99107203             
    a   1.3797964      Node   199.11866     -0.98278686     -0.11164686             
    e   0.2738643      Incl.   15.77111     -0.15581494     +0.07287807             
    P   1.62           H   23.66          G   0.15           U   8                  
    Residuals in seconds of arc
    210404 G96  0.0   0.6-    210419 I52  0.2-  0.5-    210420 L01  0.2-  0.2+
    210404 G96  0.3-  0.0     210419 I52  0.6+  0.0     210420 L01  0.1-  0.0
    210404 G96  0.3+  0.6+    210419 I52  0.3-  0.2-    210420 L01  0.2+  0.2-
    210419 G96  0.1-  0.0     210419 033  0.3+  0.5+    210420 L01  0.1-  0.3-
    210419 G96  0.3+  0.2+    210419 033  0.1-  0.1+    210420 I52  0.1-  0.0
    210419 G96  0.1+  0.2+    210419 033  0.1-  0.1+    210420 I52  0.1-  0.1-
    210419 G96  0.1-  0.2-    210420 L01  0.0   0.5-    210420 I52  0.0   0.1+
    
    Ephemeris:
    2021 HZ1                 a,e,i = 1.38, 0.27, 16                  q = 1.0019
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 03 21    13 51 43.1 -28 21 24   0.2582  1.2085   141.3    31.0    22.5
    ...
    2021 04 05    14 37 12.5 -15 58 08   0.1639  1.1490   153.2    23.1    21.1
    ...
    2021 04 13    15 11 42.2 -01 33 04   0.1298  1.1194   152.5    24.5    20.6
    ...
    2021 04 19    15 44 22.0 +13 29 21   0.1165  1.0985   142.0    34.3    20.6
    2021 04 20    15 50 27.3 +16 11 51   0.1156  1.0951   139.6    36.5    20.7
    2021 04 21    15 56 44.0 +18 55 01   0.1150  1.0918   137.1    38.8    20.7
    ...
    2021 04 27    16 38 18.1 +34 23 57   0.1185  1.0729   121.4    53.2    21.1
    ...
    2021 05 05    17 41 55.2 +49 26 14   0.1382  1.0505   104.0    68.7    21.9
    ...
    2021 05 20    19 40 47.4 +61 03 20   0.1938  1.0187    86.5    82.5    23.0
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-H92
    


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