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  • MPEC 2021-N03 : 2016 MB1

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    M.P.E.C. 2021-N03                                  Issued 2021 July 1, 13:26 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
    
                                    2016 MB1                                 
    
    
                                Revision to MPEC 2016-N2                            
    
    Additional Observations:
         K16M01B  C2021 06 30.30361515 21 53.358-22 26 29.95         21.28wUEN003F51
         K16M01B  C2021 06 30.31500915 21 52.501-22 26 03.98         22.08wUEN003F51
         K16M01B  C2021 06 30.32637015 21 51.667-22 25 38.20         21.71wUEN003F51
         K16M01B  C2021 06 30.33774015 21 50.816-22 25 11.62         22.03wUEN003F51
         K16M01B  C2021 06 30.40604415 21 45.734-22 22 35.21         21.58GVEN003F51
         K16M01B  C2021 06 30.40668915 21 45.698-22 22 33.66         21.46GVEN003F51
         K16M01B KC2021 07 01.39198115 20 39.43 -21 45 24.1          21.8 GVEN003474
         K16M01B KC2021 07 01.39550015 20 39.19 -21 45 16.5          21.5 GVEN003474
         K16M01B KC2021 07 01.39901915 20 38.96 -21 45 08.4                VEN003474
         K16M01B KC2021 07 01.40253815 20 38.69 -21 45 00.4          21.3 GVEN003474
         K16M01B KC2021 07 01.40605615 20 38.49 -21 44 52.2          21.1 GVEN003474
         K16M01B KC2021 07 01.40957515 20 38.28 -21 44 45.7                VEN003474
    
    Observer details:
    474 Mount John Observatory, Lake Tekapo.  Observers A. C. Gilmore, P. M.
        Kilmartin.  Measurer P. M. Kilmartin.  1.0-m f/7.7 reflector + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, M.
        Willman, K. Chambers, I. Smith.  Measurers K. Chambers, S. Chastel, T. de
        Boer, L. Denneau, J. Fairlamb, H. Flewelling, M. Huber, C.-C. Lin, E.
        Magnier, Y. Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien +
        CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    210630 F51 0.15+ 0.12+    210701 474 0.15+ 0.12+    MPO384634   +0.37 days
    
    Orbital elements:
    2016 MB1                                                 Earth MOID = 0.3902 AU
    Epoch 2021 July 5.0 TT = JDT 2459400.5                  Veres                   
    M 162.76667              (2000.0)            P               Q                  
    n   0.77657447     Peri.  185.85185     +0.11952169     -0.60369645             
    a   1.1722331      Node   259.60405     +0.94031541     +0.32361216             
    e   0.4931069      Incl.   53.26004     +0.31862438     -0.72857790             
    P   1.27           H   19.78          G   0.15           U   3                  
    Residuals in seconds of arc
    160628 F51  0.2+  0.2-    160706 H21  0.2+  0.1+    210630 F51  0.1+  0.3-
    160628 F51  0.0   0.1-    160706 H21  0.1+  0.2+    210630 F51  0.1+  0.2+
    160628 F51  0.1+  0.1-    160706 H21  0.1+  0.0     210630 F51  0.1-  0.1-
    160629 H21  0.2+  0.2+    160709 291  0.6-  0.3+    210630 F51  0.1+  0.0
    160629 H21  0.4-  0.2+    160709 291  0.1+  0.2-    210701 474  0.2-  0.1+
    160629 H21  0.2-  0.2-    160709 291  0.1-  0.2-    210701 474  0.2-  0.1-
    160629 568  0.0   0.1+    160709 474  0.0   0.2+    210701 474  0.1-  0.2+
    160629 568  0.0   0.0     160709 474  0.8+  0.5-    210701 474  0.5-  0.3+
    160701 705  0.0   0.0     160709 474 (2.2-  0.3-)   210701 474  0.1+  0.7+
    160701 705  0.0   0.2+    210630 F51  0.1-  0.1+    210701 474  0.5+  0.6-
    160701 705  0.2+  0.4-    210630 F51  0.1-  0.0
    
    Ephemeris:
    2016 MB1                 a,e,i = 1.17, 0.49, 53                  q = 0.5942
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 06 01    16 45 14.2 -45 32 30   0.6954  1.6745   156.4    14.0    20.9
    ...
    2021 06 16    15 48 57.9 -33 07 30   0.7366  1.7097   154.3    14.9    21.1
    ...
    2021 06 24    15 31 07.5 -26 46 46   0.7955  1.7240   143.9    20.3    21.5
    ...
    2021 06 30    15 22 15.1 -22 38 03   0.8528  1.7326   135.7    24.2    21.8
    2021 07 01    15 21 05.5 -22 00 06   0.8632  1.7339   134.4    24.8    21.8
    2021 07 02    15 20 00.7 -21 23 10   0.8739  1.7351   133.1    25.3    21.8
    ...
    2021 07 08    15 15 07.9 -18 02 34   0.9424  1.7415   125.4    28.4    22.1
    ...
    2021 07 16    15 12 12.3 -14 27 12   1.0425  1.7473   116.1    31.5    22.4
    ...
    2021 07 31    15 14 40.4 -09 50 25   1.2434  1.7499   101.1    34.7    22.9
    
    A. U. Tomatic                (C) Copyright 2021 MPC           M.P.E.C. 2021-N03
    


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