[Iaude] MPEC A80: 2011 SR12 [a=2.02,e=0.80,i=12.1,H=19.6]

mpec at si.edu mpec at si.edu
Fri Jan 13 09:19:44 EST 2017


M.P.E.C. 2017-A80                                Issued 2017 Jan. 13, 14:15 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 http://www.minorplanetcenter.net/    ISSN 1523-6714


                                   2011 SR12
 
                           Revision to MPEC 2011-S20
 
Additional Observations:
     K11S12R  C2017 01 12.32181 05 46 20.029-33 10 52.18         18.8 iLEA080F51
     K11S12R  C2017 01 12.34211 05 46 08.900-33 12 38.25         18.8 iLEA080F51
     K11S12R  C2017 01 12.35226 05 46 03.312-33 13 31.25         18.8 iLEA080F51
     K11S12R IC2017 01 12.80308905 41 57.92 -33 52 23.0          18.9 GUEA080K92
     K11S12R KC2017 01 12.80686605 41 55.76 -33 52 43.1          18.7 GUEA080K92
     K11S12R KC2017 01 12.80915205 41 54.46 -33 52 55.4          18.9 GUEA080K92
     K11S12R KC2017 01 12.81068105 41 53.59 -33 53 03.5          18.7 GUEA080K92
     K11S12R KC2017 01 12.81672005 41 50.14 -33 53 35.3          18.4 GUEA080K92
     K11S12R |C2017 01 13.44762 05 35 49.72 -34 48 56.5          18.7 RrEA080Q62
     K11S12R |C2017 01 13.45599 05 35 44.66 -34 49 40.4          18.8 RrEA080Q62
     K11S12R |C2017 01 13.46603 05 35 38.64 -34 50 34.4          18.7 RrEA080Q62
 
Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers B. Gibson, T. Goggia, S. Kahale,
    T. Lowe, A. Schultz, M. Willman.  Measurers K. Chambers, S. Chastel,
    L. Denneau, H. Flewelling, M. Huber, E. Lilly, E. Magnier, R. Wainscoat,
    C. Waters, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
K92 Sutherland-LCOGT B.  Observers T. Lister, S. Greenstreet, E. Gomez.
    Measurer T. Lister.  1.0-m f/8 Ritchey-Chretien + CCD.
Q62 iTelescope Observatory, Siding Spring.  Observers S. Foglia, L. Buzzi,
    P. Concari, C. Cremaschini, G. Galli, M. Tombelli.  0.15-m f/7 refractor
    + CCD.
 
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
170112 F51 3.05+ 6.30-    170113 Q62 2.68+ 6.80-    MPO211782   -2.7 day
 
Orbital elements:
2011 SR12                                                Earth MOID = 0.1502 AU
Epoch 2017 Feb. 16.0 TT = JDT 2457800.5                 MPC
M 353.13782              (2000.0)            P               Q
n   0.34385143     Peri.   23.27309     -0.68845018     +0.72047239
a   2.0178497      Node   203.49409     -0.69397956     -0.68778499
e   0.8041303      Incl.   12.07597     -0.21078120     -0.08872056
P   2.87           H   19.6           G   0.15           U   2
Residuals in seconds of arc
110919 F51  0.0   0.2-    110920 I93  0.2-  0.1-    111019 291  1.0-  0.1-
110919 F51  0.2-  0.1-    110920 I93  0.1-  0.0     170112 F51  0.3-  0.1-
110919 F51  0.2-  0.1-    110921 I93  0.3+  0.0     170112 F51  0.1-  0.0
110919 F51  0.2-  0.1+    110921 291  0.3+  0.5+    170112 F51  0.2-  0.0
110920 291  0.2+  0.4-    110921 291  0.1-  0.1+    170112 K92  0.5+  0.4+
110920 291  0.9-  1.4-    110921 291  0.3-  0.1+    170112 K92  0.4+  0.2+
110920 291  0.1-  0.1-    111001 291  0.3+  0.2-    170112 K92  0.4+  0.0
110920 568  0.0   0.1+    111001 291  0.3+  0.2-    170112 K92  0.4+  0.1-
110920 568  0.1+  0.1+    111001 291  0.3+  0.2-    170112 K92  0.2+  0.0
110920 C75  0.5+  0.5-    111018 291  0.4+  1.0+    170113 Q62  0.7+  0.3-
110920 C75  0.4+  0.5-    111018 291  0.2-  0.5+    170113 Q62  0.2+  0.3+
110920 B18  0.5+  0.1-    111018 291  0.9-  0.6-    170113 Q62  0.4+  0.4-
110920 B18  0.2+  0.5-    111019 291  0.4+  0.1+
110920 B18  0.0   0.7-    111019 291  0.5-  0.2-

Ephemeris:
2011 SR12                a,e,i = 2.02, 0.80, 12                  q = 0.3952
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2016 12 14    07 29 40.5 -05 59 47   0.6617  1.5410   138.0    25.3    20.8
...
2016 12 29    07 02 45.4 -16 18 48   0.4407  1.3502   139.8    28.1    19.7
...
2017 01 06    06 30 24.3 -24 41 50   0.3462  1.2416   131.9    36.1    19.2
...
2017 01 12    05 49 09.6 -32 42 32   0.2903  1.1567   120.1    47.3    19.0
2017 01 13    05 40 07.1 -34 09 33   0.2825  1.1423   117.6    49.7    19.0
2017 01 14    05 30 17.9 -35 37 31   0.2752  1.1278   115.0    52.2    19.0
...
2017 01 20    04 11 38.4 -43 56 21   0.2437  1.0388    96.2    70.4    19.1
...
2017 01 28    01 40 14.4 -47 48 54   0.2395  0.9154    66.3    99.8    19.9
...
2017 02 12    22 28 08.8 -32 08 03   0.3499  0.6727    21.1   148.0    24.5

A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-A80




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