[Iaude] MPEC J140: 2017 DF156 [a=47.87,e=0.26,i=10.1,H=9.12]

mpec at cfa.harvard.edu mpec at cfa.harvard.edu
Wed May 8 05:52:31 EDT 2024 

M.P.E.C. 2024-J140                                  Issued 2024 May 8, 09:50 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 DF156                                   


Additional Observations:
     K17DF6F 1C2015 01 17.35923209 55 46.80 +02 40 03.0                WEJ140T09
     K17DF6F 1C2015 01 17.36839909 55 46.75 +02 40 03.1                WEJ140T09
     K17DF6F 1C2016 02 09.31331209 59 17.37 +02 11 40.7                WEJ140T09
     K17DF6F 1C2016 02 09.35082109 59 17.19 +02 11 41.5                WEJ140T09
     K17DF6F 4C2018 01 17.46122 10 10 57.88 +00 56 50.8          25.1 i1EJ140T09
     K17DF6F 4C2018 01 17.46460 10 10 57.86 +00 56 50.4          25.2 i1EJ140T09
     K17DF6F 4C2018 01 17.49135 10 10 57.79 +00 56 50.9          25.1 i1EJ140T09
     K17DF6F 4C2018 01 17.54803 10 10 57.57 +00 56 51.6          24.9 i1EJ140T09
     K17DF6F 4C2018 01 17.57490 10 10 57.45 +00 56 51.9          25.3 i1EJ140T09
     K17DF6F 4C2018 01 17.59901 10 10 57.36 +00 56 52.1          25.1 i1EJ140T09

Observer details:
T09 Subaru Telescope, Maunakea.  Observers , H. Aihara, Y. AlSayyad, M. Ando,
    R. Armstrong, J. Bosch, E. Egami, H. Furusawa, J. Furusawa, S. Harasawa,
    Y. Harikane, B.-C. Hsieh, H. Ikeda, K. Ito, I. Iwata, T. Kodama, M. Koike,
    M. Kokubo, Y. Komiyama, X. Li, Y. Liang, Y.-T. Lin, R. H. Lupton, N. B.
    Lust, L. A. MacArthur, K. Mawatari, S. Mineo, H. Miyatake, S. Miyazaki, S.
    More, T. Morishima, H. Murayama, K. Nakajima, F. Nakata, A. J. Nishizawa,
    M. Oguri, N. Okabe, Y. Okura, Y. Ono, K. Osato, M. Ouchi, Y.-C. Pan, A. A.
    Plazas Malagon, P. A. Price, S. L. Reed, E. S. Rykoff, T. Shibuya, M.
    Simunovic, M. A. Strauss, K. Sugimori, Y. Suto, N. Suzuki, M. Takada, Y.
    Takagi, T. Takata, S. Takita, M. Tanaka, S. Tang, D. S. Taranu, T. Terai,
    Y. Toba, E. L. Turner, H. Uchiyama, B. Vijarnwannaluk, C. Z. Waters, Y.
    Yamada, N. Yamamoto, T. Yamashita.  Measurers S. Deen, R. Aikawa.  8.3-m
    Subaru Telescope + CCD, 8.2-m f/2.0 reflector + CCD(HSC).

First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
150117 T09 44.5- 17.2-    180117 T09 20.7-  8.0-    MPO791878    -332 days

Orbital elements:
2017 DF156                                                                      
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Alexandersen            
M  56.94353              (2000.0)            P               Q                  
n   0.00297556     Peri.  171.75139     +0.24028088     -0.95496235             
a  47.8729389      Node   264.21545     +0.88031835     +0.28995077             
e   0.2597477      Incl.   10.07834     +0.40902897     -0.06305125             
P 331              H    9.12          G   0.15           U   4                  
Residuals in seconds of arc
150117 T09  0.1+  0.1-    170304 T09  0.0   0.1+    170322 T09  0.0   0.0
150117 T09  0.1-  0.1-    170304 T09  0.1-  0.1+    170322 T09  0.0   0.0
160209 T09  0.1-  0.0     170304 T09  0.2-  0.1+    170322 T09  0.1+  0.1-
160209 T09  0.1-  0.0     170304 T09  0.1-  0.1+    170323 T09  0.4+  0.1-
170123 T09  0.0   0.3-    170304 T09  0.1-  0.2+    170323 T09  0.0   0.2+
170123 T09  0.2-  0.1-    170306 T09  0.1-  0.0     170323 T09  0.1+  0.0
170123 T09  0.1+  0.2+    170306 T09  0.1-  0.1+    170323 T09  0.1-  0.0
170123 T09  0.1+  0.1-    170306 T09  0.1-  0.0     180117 T09  0.1-  0.1+
170221 T09  0.1-  0.1-    170306 T09  0.0   0.1-    180117 T09  0.2-  0.3-
170221 T09  0.2+  0.3-    170306 T09  0.2-  0.1-    180117 T09  0.2+  0.1-
170221 T09  0.1+  0.2-    170307 T09  0.0   0.2-    180117 T09  0.1+  0.0
170221 T09  0.0   0.1+    170307 T09  0.0   0.0     180117 T09  0.2-  0.0
170223 T09  0.4+  0.4+    170307 T09  0.1-  0.3+    180117 T09  0.1-  0.1-
170223 T09  0.2+  0.2+    170307 T09  0.0   0.0
170223 T09  0.0   0.1+    170322 T09  0.0   0.1-

Ephemeris:
2017 DF156               a,e,i = 47.87, 0.26, 10                 q = 35.4381
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 04 08    10 34 19.8 -01 48 20  43.0456 43.8331   141.4     0.8    25.6
...
2024 04 23    10 33 40.4 -01 41 49  43.2303 43.8431   127.0     1.0    25.7
...
2024 05 01    10 33 25.9 -01 38 45  43.3459 43.8484   119.3     1.1    25.7
...
2024 05 07    10 33 18.4 -01 36 42  43.4387 43.8525   113.6     1.2    25.7
2024 05 08    10 33 17.4 -01 36 23  43.4547 43.8531   112.6     1.2    25.7
2024 05 09    10 33 16.5 -01 36 05  43.4707 43.8538   111.7     1.2    25.7
...
2024 05 15    10 33 12.8 -01 34 21  43.5690 43.8578   106.0     1.3    25.7
...
2024 05 23    10 33 12.6 -01 32 28  43.7043 43.8631    98.4     1.3    25.7
...
2024 06 07    10 33 26.6 -01 30 21  43.9633 43.8731    84.2     1.3    25.7

M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-J140

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