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  • MPEC 2017-O26 : 2001 NJ6

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    M.P.E.C. 2017-O26                                Issued 2017 July 21, 10:37 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@CFA.HARVARD.EDU
                URL https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                       2001 NJ6
    
                               Revision to MPEC 2001-N36
    
    Additional Observations:
         K01N06J  C2017 07 20.46011 20 10 17.51 -22 55 56.7          19.1 oLEO026T08
         K01N06J  C2017 07 20.46887 20 10 17.83 -22 56 04.1          18.9 oLEO026T08
         K01N06J  C2017 07 20.47665 20 10 18.07 -22 56 12.1          18.9 oLEO026T08
         K01N06J  C2017 07 20.48490 20 10 18.42 -22 56 18.6          18.6 oLEO026T08
         K01N06J  C2017 07 20.95259720 10 42.467-23 04 06.79         18.7 GUEO026J04
         K01N06J  C2017 07 20.95369620 10 42.514-23 04 07.88         18.6 GUEO026J04
         K01N06J KC2017 07 21.20979 20 10 54.41 -23 08 27.8          18.4 RqEO026H36
         K01N06J KC2017 07 21.21585 20 10 54.65 -23 08 34.3          18.6 RqEO026H36
         K01N06J KC2017 07 21.22186 20 10 54.88 -23 08 40.3          18.9 RqEO026H36
    
    Observer details:
    H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m reflector + CCD.
    J04 ESA Optical Ground Station, Tenerife.  Observer D. Abreu.  Measurers
        M. Micheli, D. Koschny, M. Busch, E. Schwab, A. Knoefel.  1.0-m f/4.4
        reflector + CCD.
    T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, A. Heinze, H. Weiland,
        B. Stalder, J. Tonry.  Measurers L. Denneau, A. Heinze, J. Tonry.  0.5-m
        f/2.0 Schmidt + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    170720 T08 1.88- 0.25-    170721 H36 1.89- 0.25-    MPO 20845   +0.56 day
    
    Orbital elements:
    2001 NJ6                                                 Earth MOID = 0.2753 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M   4.71079              (2000.0)            P               Q
    n   0.30787052     Peri.  211.11182     +0.78711030     +0.61125137
    a   2.1721542      Node   110.98068     -0.54616538     +0.75293479
    e   0.4088486      Incl.    5.07769     -0.28663698     +0.24384619
    P   3.20           H   20.4           G   0.15           U   2
    Residuals in seconds of arc
    010713 644  0.2-  0.5-    010717 413  0.0   0.2-    010815 474  0.2+  0.1+
    010713 644  0.0   0.5-    010717 413  0.4-  0.1+    010815 474  0.0   0.2+
    010713 644  0.0   0.1+    010720 644  0.8+  0.3+    010815 474  0.3+  0.1-
    010714 557  1.1-  0.6+    010720 644  0.5+  0.3+    010815 474  0.2-  0.1-
    010714 557  0.3-  0.9+    010720 644  0.9+  0.6+    010815 474  0.5-  0.0
    010714 557  0.6-  0.0     010724 474  0.0   0.2+    010821 644  0.2-  0.3+
    010714 046  0.2+  0.3+    010724 474  0.1-  0.1+    010821 644  0.5-  0.4+
    010714 046  0.9+  1.0-    010724 474  0.2-  0.2+    010821 644  0.1-  0.4-
    010714 046  1.3+  0.1+    010724 474  0.2-  0.2+    011012 474  0.2-  0.4-
    010714 644  0.3+  0.0     010724 474  0.2-  0.1+    011012 474 (1.7-  0.5-)
    010714 644  0.3+  0.1+    010724 360  0.3+  0.1-    011012 474  0.3+  0.2+
    010714 644  0.1+  0.1-    010724 360  0.2+  0.3+    011012 474 (5.0+  5.1+)
    010714 474  0.2-  0.1-    010724 360  0.5+  0.1+    170720 T08  0.2-  1.4-
    010714 474  0.3-  0.1-    010730 413  0.0   0.0     170720 T08  0.0   0.2-
    010714 474  0.1-  0.0     010730 413  0.1+  0.3+    170720 T08  0.5-  0.6-
    010714 474  0.4-  0.1-    010730 413  0.1-  0.2-    170720 T08  0.2+  1.0+
    010714 557  0.1+  0.2+    010808 413  0.0   0.1-    170720 J04  0.1-  0.1-
    010714 557  0.0   0.1+    010808 413  0.2+  0.1-    170720 J04  0.1-  0.0
    010715 474  0.6-  0.0     010808 413  0.3+  0.3-    170721 H36  0.3+  0.1+
    010715 474  0.7-  0.1-    010809 413  0.2+  0.0     170721 H36  0.3+  0.2-
    010715 474  0.4-  0.0     010809 413  0.1-  0.0     170721 H36  0.3+  0.1-
    010717 413  0.3-  0.4-    010809 413  0.1+  0.3-
    
    Ephemeris:
    2001 NJ6                 a,e,i = 2.17, 0.41, 5                   q = 1.2841
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 06 21    19 45 54.3 -17 00 59   0.4182  1.4041   154.0    18.5    20.2
    ...
    2017 07 06    19 58 58.2 -19 22 21   0.3449  1.3538   165.9    10.5    19.4
    ...
    2017 07 14    20 05 14.5 -21 12 48   0.3174  1.3318   172.5     5.7    19.0
    ...
    2017 07 20    20 09 55.7 -22 47 59   0.3021  1.3178   176.4     2.8    18.7
    2017 07 21    20 10 43.6 -23 04 33   0.3000  1.3157   176.6     2.6    18.7
    2017 07 22    20 11 31.9 -23 21 14   0.2980  1.3137   176.6     2.6    18.6
    ...
    2017 07 28    20 16 38.1 -25 02 36   0.2888  1.3027   173.4     5.2    18.7
    ...
    2017 08 05    20 24 32.9 -27 12 26   0.2833  1.2920   166.9    10.2    18.9
    ...
    2017 08 20    20 44 05.7 -30 12 11   0.2926  1.2841   155.6    19.0    19.2
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-O26
    

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