[Iaude] MPEC X197: 2020 HR3 [a=1.09,e=0.34,i=8.3,H=24.0]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat Dec 11 09:07:48 EST 2021


M.P.E.C. 2021-X197                            Issued 2021 December 11, 14:06 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 at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                    2020 HR3                                    


                           Revision to MPEC 2020-H108                           

Additional Observations:
     K20H03R KC2021 12 05.45085208 37 01.96 +46 41 48.8          22.41GVEX197I52
     K20H03R KC2021 12 05.45622208 36 59.86 +46 42 04.1          22.53GVEX197I52
     K20H03R KC2021 12 05.46159208 36 57.72 +46 42 18.7          22.84GVEX197I52
     K20H03R KC2021 12 05.46696408 36 56.52 +46 42 26.9          21.53GVEX197I52
     K20H03R  C2021 12 06.34404 08 31 29.27 +47 21 48.7          22.9 GVEX197I52
     K20H03R  C2021 12 06.34941 08 31 27.17 +47 22 03.0          22.5 GVEX197I52

Observer details:
I52 Steward Observatory, Mt. Lemmon Station.  Observer D. C. Fuls.  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, D. Rankin, R. L.
    Seaman, F. C. Shelly, K. W. Wierzchos, B. Gray.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
211205 I52 0.05+ 0.05+    211206 I52 0.05+ 0.05+    MPO546171   +0.03 days

Orbital elements:
2020 HR3                                                 Earth MOID = 0.0042 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
M 114.19146              (2000.0)            P               Q                  
n   0.86591883     Peri.  279.38474     +0.82769241     +0.55110516             
a   1.0901458      Node    47.25824     -0.44149100     +0.75592581             
e   0.3410801      Incl.    8.28829     -0.34642599     +0.35335431             
P   1.14           H   24.04          G   0.15           U   2                  
Residuals in seconds of arc
200421 G96 (0.8-  0.4-)   200422 I52  0.6+  0.7-    200425 I52  0.0   0.1-
200421 G96  0.1-  0.5+    200422 I52  0.0   0.3+    200427 V06  0.3+  0.0
200421 F52  0.1+  0.0     200422 I52  0.8+  0.4+    200427 V06  0.2+  0.2-
200421 G96  0.2-  0.2-    200422 H21  0.2+  0.3-    200427 V06  0.0   0.1-
200421 F52  0.1-  0.2+    200422 H21  0.3-  0.1+    200427 V06  0.0   0.0
200421 F52  0.1-  0.0     200422 H21  0.5-  0.2-    200513 V06  0.1+  0.2+
200421 F52  0.1+  0.0     200422 H21  0.3-  0.2+    200513 V06  0.1-  0.1-
200421 V06  0.1-  0.0     200422 246  0.7-  1.0+    200513 V06  0.0   0.1-
200421 V06  0.1+  0.3-    200422 246  1.4+  0.0     211205 I52  0.1-  0.0
200421 V06  0.2-  0.1+    200422 246  1.2-  0.4+    211205 I52  0.2+  0.4+
200421 246  0.3+  0.4-    200422 033  0.3-  0.1-    211205 I52  0.1-  0.2+
200421 246  0.5-  0.2+    200422 033  0.3+  0.5-    211205 I52 (9.4+  6.5-)
200421 246  0.9+  0.4+    200422 033  0.0   0.4-    211206 I52  0.2-  0.1-
200421 246  0.9-  0.7-    200425 I52  0.0   0.3-    211206 I52  0.2+  0.5-
200421 246  1.0-  0.5+    200425 I52  0.1+  0.1-
200422 I52  0.2-  0.0     200425 I52  0.2-  0.1-

Ephemeris:
2020 HR3                 a,e,i = 1.09, 0.34, 8                   q = 0.7183
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 11    10 23 32.5 +19 55 11   0.1613  0.9704    78.3    92.3    23.3
...
2021 11 26    09 27 36.9 +37 52 57   0.1728  1.0588   110.1    61.1    22.5
...
2021 12 04    08 45 49.2 +45 32 15   0.1857  1.1041   125.6    46.6    22.4
...
2021 12 10    08 07 26.7 +49 43 39   0.1999  1.1368   135.8    37.1    22.3
2021 12 11    08 00 37.4 +50 15 56   0.2027  1.1421   137.4    35.7    22.3
2021 12 12    07 53 43.9 +50 45 19   0.2056  1.1474   138.8    34.4    22.3
...
2021 12 18    07 12 13.0 +52 40 49   0.2261  1.1784   146.1    27.8    22.4
...
2021 12 26    06 22 55.7 +52 53 05   0.2611  1.2175   150.5    23.5    22.7
...
2022 01 10    05 27 51.0 +49 26 31   0.3496  1.2836   144.3    26.6    23.5

A. U. Tomatic                (C) Copyright 2021 MPC           M.P.E.C. 2021-X197




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