[Iaude] MPEC J08: 2020 HX9 [a=1.22,e=0.32,i=16.2,H=23.2]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Fri May 1 10:46:35 EDT 2020


M.P.E.C. 2020-J08                                   Issued 2020 May 1, 14:45 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 HX9                                    


Observations:
     K20H09X* C2020 04 28.56535016 42 45.776-13 50 28.02         20.86wUEJ008F51
     K20H09X  C2020 04 28.57690716 42 42.682-13 49 20.58         20.1 GVEJ008F51
     K20H09X  C2020 04 28.58848516 42 39.636-13 48 13.89         21.05wUEJ008F51
     K20H09X  C2020 04 29.35490 16 39 37.00 -12 35 36.4          20.6 GVEJ008I52
     K20H09X  C2020 04 29.35643 16 39 36.60 -12 35 28.3          21.8 GVEJ008I52
     K20H09X  C2020 04 29.35949 16 39 35.80 -12 35 11.3          21.2 GVEJ008I52
     K20H09X KC2020 04 29.61011416 38 35.69 -12 10 44.6          21.2 GVEJ008474
     K20H09X KC2020 04 29.61367516 38 34.78 -12 10 24.7          21.3 GVEJ008474
     K20H09X KC2020 04 29.61723416 38 33.94 -12 10 04.5          20.0 GVEJ008474
     K20H09X KC2020 04 29.62079016 38 33.06 -12 09 44.7          21.3 GVEJ008474
     K20H09X  C2020 04 30.31629 16 35 51.94 -11 07 08.9                VEJ008I52
     K20H09X  C2020 04 30.31859 16 35 51.34 -11 06 56.6                VEJ008I52
     K20H09X  C2020 04 30.32089 16 35 50.81 -11 06 44.0                VEJ008I52
     K20H09X  C2020 04 30.44545916 35 22.239-10 55 20.89         20.72wUEJ008F51
     K20H09X  C2020 04 30.46098116 35 18.375-10 53 57.95         20.60wUEJ008F51
     K20H09X  C2020 05 01.42552 16 31 37.94 -09 29 06.6                VEJ008I52
     K20H09X  C2020 05 01.42763 16 31 37.41 -09 28 54.4          19.9 GVEJ008I52
     K20H09X  C2020 05 01.42974 16 31 36.93 -09 28 43.9          20.4 GVEJ008I52

Observer details:
474 Mount John Observatory, Lake Tekapo.  Observers A. C. Gilmore, P. M. 
   Kilmartin.  Measurer P. M. Kilmartin.  1.0-m f/7.7 reflector + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, M. 
   Willman, K. Chambers.  Measurers K. Chambers, S. Chastel, T. de Boer, L. 
   Denneau, J. Fairlamb, H. Flewelling, M. Huber, C.-C. Lin, E. Magnier, Y. 
   Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer H. Groeller.  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.

Orbital elements:
2020 HX9                                                 Earth MOID = 0.0563 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5                  Pan
M  84.88859              (2000.0)            P               Q
n   0.73230271     Peri.  266.45607     -0.55125205     -0.81588484
a   1.2190147      Node   218.71656     +0.83236483     -0.52340516
e   0.3176330      Incl.   16.20078     +0.05735823     -0.24572133
P   1.35           H   23.2           G   0.15           U   7
Residuals in seconds of arc
200428 F51  0.2+  0.2-    200429 474  0.2-  0.3-    200430 I52  0.1-  0.5-
200428 F51  0.2-  0.3+    200429 474  0.3-  0.2-    200430 F51  0.0   0.4+
200428 F51  0.0   0.2-    200429 474  0.5+  0.2+    200430 F51  0.1+  0.0
200429 I52  0.1+  0.6+    200429 474  0.8+  0.2+    200501 I52  0.1+  0.7-
200429 I52  0.0   0.1+    200430 I52  0.2-  0.6-    200501 I52  0.2-  0.5+
200429 I52  0.2-  0.1-    200430 I52  0.7-  0.7-    200501 I52  0.2+  0.1+

Ephemeris:
2020 HX9                 a,e,i = 1.22, 0.32, 16                  q = 0.8318
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 04 01    19 40 23.6 -59 16 05   0.1626  1.0027    86.5    84.1    22.2
...
2020 04 16    17 44 43.3 -36 37 01   0.1440  1.0797   118.5    54.8    21.2
...
2020 04 24    17 02 41.5 -21 39 31   0.1510  1.1214   137.3    37.5    20.9
...
2020 04 30    16 37 04.2 -11 35 22   0.1659  1.1525   148.9    26.9    20.8
2020 05 01    16 33 14.4 -10 05 41   0.1691  1.1577   150.4    25.5    20.8
2020 05 02    16 29 31.8 -08 39 34   0.1726  1.1628   151.8    24.2    20.8
...
2020 05 08    16 09 41.8 -01 19 37   0.1975  1.1934   156.8    19.4    21.0
...
2020 05 16    15 49 08.0 +05 17 09   0.2399  1.2331   155.3    20.1    21.6
...
2020 05 31    15 25 57.2 +10 45 48   0.3409  1.3038   143.5    27.6    22.7

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-J08




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