[Iaude] MPEC M100: 2015 RA2 [a=2.96,e=0.57,i=15.3,H=20.1]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Wed Jun 24 16:22:44 EDT 2020


M.P.E.C. 2020-M100                                Issued 2020 June 24, 20:21 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 at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                    2015 RA2                                    


                           Revision to MPEC 2015-R24                            

Additional Observations:
     K15R02A  C2020 05 17.48872 15 57 13.991+11 14 51.87         22.1 wUEM100F51
     K15R02A  C2020 05 17.50120 15 57 13.254+11 14 59.57         22.0 wUEM100F51
     K15R02A  C2020 05 17.51391 15 57 12.503+11 15 07.91         21.8 wUEM100F51
     K15R02A  C2020 05 17.52635 15 57 11.793+11 15 16.01         22.2 wUEM100F51
     K15R02A  C2020 06 24.38983215 23 05.280+12 43 54.45         22.51wUEM100F51
     K15R02A  C2020 06 24.40143315 23 04.894+12 43 49.32         22.36wUEM100F51
     K15R02A  C2020 06 24.41304515 23 04.489+12 43 44.12         22.08wUEM100F51
     K15R02A  C2020 06 24.42467915 23 04.092+12 43 39.00         22.10wUEM100F51

Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, M.
    Willman.  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
200517 F51 0.05+ 0.00+    200624 F51 0.04+ 0.00+    MPO357225   +0.06 days

Orbital elements:
2015 RA2                                                 Earth MOID = 0.2652 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5                  Veres
M 336.38287              (2000.0)            P               Q
n   0.19330189     Peri.  170.20001     +0.78797461     +0.60266169
a   2.9624110      Node   151.52858     -0.58129465     +0.79566793
e   0.5699519      Incl.   15.33506     -0.20295945     +0.06092156
P   5.10           H   20.1           G   0.15           U   0
Residuals in seconds of arc
150905 F51  0.0   0.0     150908 474  1.1+  0.3+    151015 F51  0.1-  0.0
150905 F51  0.1-  0.1+    150908 474  0.2-  0.2-    151015 F51  0.0   0.0
150905 F51  0.0   0.1-    150908 474  0.1-  0.3+    151108 807  0.1+  0.0
150906 F51  0.1-  0.0     150912 474  0.3-  0.0     151108 807  0.3+  0.0
150906 F51  0.1-  0.0     150912 474  0.3-  0.1-    151108 807  0.2-  0.5-
150906 F51  0.0   0.1+    150912 474  0.3+  0.3+    200517 F51  0.0   0.3+
150907 H21  0.5+  0.7+    150912 474  0.0   0.2-    200517 F51  0.1-  0.1-
150907 H21  0.1+  0.7-    150920 474  0.3+  0.0     200517 F51  0.1-  0.0
150908 711  0.0   0.1-    150920 474  0.1+  0.0     200517 F51  0.2+  0.1+
150908 711  0.1+  0.0     150920 474  0.0   0.0     200624 F51  0.0   0.1-
150908 711  0.1-  0.0     151008 474  0.0   0.2-    200624 F51  0.2+  0.1-
150908 H21  0.2-  0.6-    151008 474  0.3+  0.1+    200624 F51  0.0   0.1-
150908 H21  0.1+  0.2-    151008 474  0.3-  0.1-    200624 F51  0.0   0.1-
150908 H21  0.1-  0.4+    151008 474  0.5+  0.5-
150908 H21  0.3+  0.1-    151015 F51  0.0   0.3+

Ephemeris:
2015 RA2                 a,e,i = 2.96, 0.57, 15                  q = 1.2740
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 05 25    15 49 52.9 +12 26 20   0.9405  1.8698   146.3    17.5    22.2
...
2020 06 09    15 34 41.9 +13 34 37   0.8853  1.7674   136.8    23.2    22.2
...
2020 06 17    15 27 49.6 +13 23 49   0.8691  1.7139   130.6    26.7    22.2
...
2020 06 23    15 23 50.4 +12 53 34   0.8616  1.6745   126.0    29.4    22.2
2020 06 24    15 23 17.7 +12 46 44   0.8607  1.6680   125.2    29.9    22.2
2020 06 25    15 22 47.3 +12 39 25   0.8598  1.6615   124.4    30.3    22.2
...
2020 07 01    15 20 33.9 +11 45 22   0.8562  1.6231   119.9    32.9    22.2
...
2020 07 09    15 19 56.6 +10 08 38   0.8543  1.5733   114.2    36.1    22.2
...
2020 07 24    15 26 29.6 +06 03 07   0.8562  1.4860   104.8    41.4    22.2

A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-M100




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