[Iaude] MPEC M75: 2017 CH55 [a=43.55,e=0.19,i=12.4,H=8.39]

[mpec at cfa.harvard.edu]

M.P.E.C. 2024-M75                                 Issued 2024 June 27, 03:44 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets, routine data on comets and natural satellites,
         and occasional editorial announcements.  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

                                   2017 CH55                                    


Additional Observations:
     K17C55H 1C2019 02 04.46124610 27 13.26 -02 20 55.1                WEM075T09
     K17C55H 1C2019 02 28.40164010 25 09.26 -02 09 33.3                WEM075T09
     K17C55H 1C2019 03 03.33305510 24 53.87 -02 07 53.7                WEM075T09

Observer details:
T09 Subaru Telescope, Maunakea.  Observer .  Measurer S. Deen.  8.3-m Subaru
    Telescope + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
190204 T09 34.4+ 15.3+    190303 T09 36.3+ 16.1+    MPO824951   +1209 days

Orbital elements:
2017 CH55                                                                       
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Alexandersen            
M   4.36235              (2000.0)            P               Q                  
n   0.00342917     Peri.  301.37539     -0.93455290     -0.32797761             
a  43.5521596      Node   219.95158     +0.35269885     -0.90513618             
e   0.1936688      Incl.   12.40923     -0.04705739     -0.27047955             
P 287              H    8.39          G   0.15           U   6                  
Residuals in seconds of arc
170202 T09  0.0   0.1+    170321 T09  0.0   0.1+    170329 T09  0.1-  0.2-
170202 T09  0.1-  0.0     170321 T09  0.1+  0.1+    170329 T09  0.1-  0.1-
170202 T09  0.1-  0.1-    170321 T09  0.1-  0.1-    190204 T09  0.0   0.0
170221 T09  0.1+  0.0     170321 T09  0.1+  0.2-    190228 T09  0.0   0.0
170221 T09  0.1+  0.2+    170321 T09  0.0   0.1+    190303 T09  0.1+  0.0
170221 T09  0.1+  0.0     170329 T09  0.1+  0.2+

Ephemeris:
2017 CH55                a,e,i = 43.55, 0.19, 12                 q = 35.1175
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 05 28    10 57 46.0 -03 57 12  34.9644 35.1585   100.2     1.6    24.0
...
2024 06 12    10 58 04.6 -03 53 57  35.2135 35.1594    86.1     1.7    24.1
...
2024 06 20    10 58 23.8 -03 53 15  35.3455 35.1599    78.7     1.6    24.1
...
2024 06 26    10 58 42.4 -03 53 12  35.4424 35.1603    73.1     1.6    24.1
2024 06 27    10 58 45.8 -03 53 14  35.4583 35.1604    72.2     1.6    24.1
2024 06 28    10 58 49.3 -03 53 17  35.4741 35.1604    71.2     1.6    24.1
...
2024 07 04    10 59 12.2 -03 53 47  35.5669 35.1608    65.7     1.5    24.1
...
2024 07 12    10 59 47.6 -03 55 06  35.6841 35.1613    58.4     1.4    24.1
...
2024 07 27    11 01 07.1 -03 59 27  35.8770 35.1623    44.7     1.2    24.1

M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-M75