[Iaude] MPEC J141: 2017 EN51 [a=45.61,e=0.17,i=17.7,H=9.99]

mpec at cfa.harvard.edu mpec at cfa.harvard.edu
Wed May 8 05:52:59 EDT 2024


M.P.E.C. 2024-J141                                  Issued 2024 May 8, 09:51 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 EN51                                    


Additional Observations:
     K17E51N 4C2018 01 17.46122 10 09 22.36 +01 05 17.4          26.0 i1EJ141T09
     K17E51N 4C2018 01 17.49135 10 09 22.23 +01 05 17.9          25.6 i1EJ141T09
     K17E51N 4C2018 01 17.51296 10 09 22.16 +01 05 18.4          25.7 i1EJ141T09
     K17E51N 4C2018 01 17.51830 10 09 22.13 +01 05 18.6          25.9 i1EJ141T09
     K17E51N 4C2018 01 17.59901 10 09 21.81 +01 05 19.9          25.9 i1EJ141T09
     K17E51N 1C2019 02 04.44849410 14 49.64 +01 01 13.2                WEJ141T09
     K17E51N 1C2019 02 05.42536610 14 45.09 +01 01 39.3                WEJ141T09
     K17E51N 1C2019 04 05.33449510 10 22.11 +01 34 16.6                WEJ141T09
     K17E51N 1C2019 04 05.35891810 10 22.02 +01 34 17.8                WEJ141T09
     K17E51N 1C2019 04 05.36956410 10 21.99 +01 34 18.1                WEJ141T09

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 H. Fukuyama, S. Deen.  8.2-m
    f/2.0 reflector + CCD(HSC), 8.3-m Subaru Telescope + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
180117 T09  6.4+  2.8+    190405 T09 11.7+  6.6+    MPO810822   +1046 days

Orbital elements:
2017 EN51                                                                       
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Alexandersen            
M 353.47329              (2000.0)            P               Q                  
n   0.00319923     Peri.  346.98476     -0.98806322     -0.15222667             
a  45.6148028      Node   184.46648     +0.15385332     -0.98286172             
e   0.1720726      Incl.   17.65966     -0.00776141     -0.10397052             
P 308              H    9.99          G   0.15           U   5                  
Residuals in seconds of arc
170121 T09  0.2+  0.2+    170223 T09  0.1-  0.1+    170322 T09  0.3-  0.4+
170121 T09  0.0   0.1+    170223 T09  0.1-  0.3-    170322 T09  0.2+  0.0
170121 T09  0.0   0.1-    170304 T09  0.0   0.1-    170322 T09  0.1+  0.6+
170123 T09  0.3-  0.2-    170304 T09  0.3+  0.3-    170322 T09  0.2+  0.1-
170123 T09  0.1+  0.0     170304 T09  0.0   0.2-    170325 T09  0.6-  0.3+
170123 T09  0.1+  0.1-    170304 T09  0.2+  0.0     170325 T09  0.3-  0.4-
170123 T09  0.1+  0.1-    170304 T09  0.1-  0.0     170325 T09  0.2+  0.4+
170123 T09  0.0   0.0     170304 T09  0.2+  0.1+    180117 T09  0.0   0.1-
170123 T09  0.2-  0.1-    170304 T09  0.4+  0.2-    180117 T09  0.2-  0.1-
170223 T09  0.0   0.2+    170304 T09  0.3+  0.5-    180117 T09  0.1+  0.0
170223 T09  0.1-  0.4-    170306 T09  0.1+  0.1-    180117 T09  0.1-  0.2+
170223 T09  0.0   0.6+    170306 T09  0.1-  0.1+    180117 T09  0.0   0.1+
170223 T09  0.1-  0.3+    170306 T09  0.2-  0.1-    190204 T09  0.2-  0.4-
170223 T09  0.2-  0.1+    170322 T09  0.3+  0.6-    190205 T09  0.0   0.1+
170223 T09  0.1+  0.1-    170322 T09  0.0   0.1-    190405 T09  0.1+  0.2-
170223 T09  0.2+  0.3+    170322 T09  0.3+  0.2+    190405 T09  0.0   0.2+
170223 T09  0.0   0.3-    170322 T09  0.1-  0.1-    190405 T09  0.1+  0.1+

Ephemeris:
2017 EN51                a,e,i = 45.61, 0.17, 18                 q = 37.7657
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 04 08    10 43 56.7 +00 43 56  37.0316 37.8393   143.3     0.9    25.9
...
2024 04 23    10 43 11.6 +00 51 52  37.2023 37.8382   128.6     1.2    25.9
...
2024 05 01    10 42 54.9 +00 55 32  37.3111 37.8376   120.8     1.3    25.9
...
2024 05 07    10 42 46.1 +00 57 58  37.3992 37.8372   115.0     1.4    25.9
2024 05 08    10 42 44.9 +00 58 21  37.4143 37.8371   114.1     1.4    25.9
2024 05 09    10 42 43.9 +00 58 43  37.4296 37.8370   113.1     1.4    25.9
...
2024 05 15    10 42 39.5 +01 00 45  37.5234 37.8366   107.3     1.5    25.9
...
2024 05 23    10 42 39.1 +01 02 58  37.6530 37.8361    99.7     1.5    26.0
...
2024 06 07    10 42 54.9 +01 05 27  37.9026 37.8350    85.4     1.5    26.0

M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-J141





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