[Iaude] MPEC K40: 2018 HS12 [a=41.96,e=0.18,i=14.8,H=8.3]

mpec at cfa.harvard.edu mpec at cfa.harvard.edu
Tue May 21 14:03:48 EDT 2024


M.P.E.C. 2024-K40                                  Issued 2024 May 21, 18:02 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

                                   2018 HS12                                    


Observations:
     K18H12S 4C2018 03 18.46308 11 44 54.07 +03 20 58.0          23.3 i1EK040T09
     K18H12S 4C2018 03 18.50571 11 44 53.84 +03 20 59.2          23.3 i1EK040T09
     K18H12S 4C2018 03 18.56269 11 44 53.53 +03 21 00.7          23.2 i1EK040T09
     K18H12S*4C2018 04 24.35538 11 41 51.84 +03 36 43.8          23.2 z1EK040T09
     K18H12S 4C2018 04 24.40148 11 41 51.65 +03 36 44.7          23.2 z1EK040T09
     K18H12S 4C2018 04 24.48536 11 41 51.31 +03 36 46.2          23.4 z1EK040T09
     K18H12S 4C2019 03 02.41733 11 52 31.45 +02 00 19.1          22.8 y1EK040T09
     K18H12S 4C2019 03 02.51880 11 52 30.91 +02 00 22.1          23.8 y1EK040T09
     K18H12S 4C2019 03 02.56189 11 52 30.67 +02 00 23.4          23.2 y1EK040T09
     K18H12S 4C2019 03 02.60285 11 52 30.47 +02 00 24.4          24.0 y1EK040T09
     K18H12S 4C2019 03 08.39383 11 51 59.96 +02 03 14.7          23.6 r1EK040T09
     K18H12S 4C2019 03 08.42333 11 51 59.81 +02 03 15.3          23.7 r1EK040T09
     K18H12S 4C2019 03 08.43604 11 51 59.75 +02 03 15.8          23.6 r1EK040T09

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 A. Yamauchi, H. Fukuyama.
    8.2-m f/2.0 reflector + CCD(HSC).

Orbital elements:
2018 HS12                                                                       
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Alexandersen            
M 349.84195              (2000.0)            P               Q                  
n   0.00362677     Peri.  200.54622     -0.92993994     +0.36768084             
a  41.9555271      Node     1.06207     -0.29140855     -0.72903945             
e   0.1844406      Incl.   14.83164     -0.22426050     -0.57733203             
P 272              H    8.30          G   0.15           U   7                  
Residuals in seconds of arc
180318 T09  0.1-  0.0     180424 T09  0.0   0.0     190308 T09  0.1-  0.1+
180318 T09  0.0   0.0     190302 T09  0.1+  0.0     190308 T09  0.0   0.2-
180318 T09  0.1+  0.2-    190302 T09  0.0   0.1+    190308 T09  0.2+  0.1-
180424 T09  0.0   0.1+    190302 T09  0.2-  0.1+
180424 T09  0.0   0.1+    190302 T09  0.1+  0.0

Ephemeris:
2018 HS12                a,e,i = 41.96, 0.18, 15                 q = 34.2172
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 04 21    12 19 08.6 -03 42 05  33.4844 34.3960   154.8     0.7    23.7
...
2024 05 06    12 18 02.6 -03 35 57  33.6162 34.3941   139.9     1.1    23.8
...
2024 05 14    12 17 33.9 -03 33 18  33.7079 34.3931   132.1     1.3    23.8
...
2024 05 20    12 17 15.9 -03 31 40  33.7850 34.3924   126.2     1.4    23.8
2024 05 21    12 17 13.2 -03 31 26  33.7985 34.3922   125.2     1.4    23.8
2024 05 22    12 17 10.6 -03 31 12  33.8122 34.3921   124.3     1.4    23.8
...
2024 05 28    12 16 56.9 -03 30 01  33.8973 34.3914   118.4     1.5    23.8
...
2024 06 05    12 16 44.1 -03 28 59  34.0184 34.3904   110.7     1.6    23.8
...
2024 06 20    12 16 37.8 -03 28 55  34.2611 34.3885    96.4     1.7    23.9

M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-K40





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