[Iaude] MPEC S95: 2015 BF4 [a=2.07,e=0.43,i=5.8,H=20.3]

[mpec at mpcdb1.cfa.harvard.edu]

M.P.E.C. 2017-S95                                Issued 2017 Sept. 21, 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 at CFA.HARVARD.EDU
            URL http://www.minorplanetcenter.net/    ISSN 1523-6714


                                   2015 BF4
 
                           Revision to MPEC 2015-B69
 
Additional Observations:
     K15B04F KC2017 09 20.01818101 33 51.350+21 58 19.97         21.0 GUES095J04
     K15B04F KC2017 09 20.02479201 33 51.427+21 58 22.24         21.0 GUES095J04
     K15B04F KC2017 09 20.03139901 33 51.493+21 58 23.76         21.2 GUES095J04
     K15B04F KC2017 09 21.03305401 34 06.811+22 02 24.97         21.5 GUES095J04
     K15B04F KC2017 09 21.04406801 34 06.925+22 02 27.62         20.9 GUES095J04
 
Observer details:
J04 ESA Optical Ground Station, Tenerife.  Observer D. Abreu.  Measurers
    M. Micheli, D. Koschny, A. Knoefel, M. Busch, E. Schwab.  1.0-m f/4.4
    reflector + CCD.
 
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
170920 J04 0.18- 0.05-    170921 J04 0.18- 0.05-    MPO382729   +0.12 day
 
Orbital elements:
2015 BF4                                                 Earth MOID = 0.2034 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
M 320.82982              (2000.0)            P               Q
n   0.33066276     Peri.  207.48869     +0.06417839     -0.99417839
a   2.0711546      Node   238.94777     +0.93313899     +0.09052698
e   0.4297418      Incl.    5.79817     +0.35374110     -0.05843111
P   2.98           H   20.3           G   0.15           U   1
Residuals in seconds of arc
141119 F51  0.1+  0.0     150117 H21  0.1+  0.1+    150122 F51  0.1+  0.1+
141119 F51  0.0   0.0     150117 H01  0.0   0.1-    150122 F51  0.2-  0.0
141119 F51  0.0   0.1+    150117 H01  0.0   0.1-    150122 F51  0.0   0.1+
141119 F51  0.0   0.1-    150117 H01  0.1-  0.1-    150122 F51  0.1-  0.0
150116 F51  0.1+  0.1+    150117 H01  0.0   0.1-    150210 291  0.2-  0.3-
150116 F51  0.1-  0.2-    150118 033  0.4+  0.1-    150210 291  0.2-  0.4+
150116 F51  0.0   0.1-    150118 033  0.2+  0.2-    150210 291  0.4+  0.1+
150117 H21  0.1-  0.1+    150118 033  0.2+  0.2+    170920 J04  0.0   0.2-
150117 W86  0.0   0.0     150118 033  0.0   0.3-    170920 J04  0.0   0.3+
150117 H21  0.0   0.2+    150119 H21  0.0   0.2-    170920 J04  0.1-  0.1+
150117 W86  0.1+  0.0     150119 H21  0.4-  0.6+    170921 J04  0.1-  0.1+
150117 W86  0.2+  0.1-    150119 H21  0.1-  0.1+    170921 J04  0.1+  0.0

Ephemeris:
2015 BF4                 a,e,i = 2.07, 0.43, 6                   q = 1.1811
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2017 08 22    01 15 09.6 +18 24 22   0.9231  1.7085   124.0    29.4    22.6
...
2017 09 06    01 27 15.9 +20 34 17   0.7486  1.6233   134.5    26.3    21.9
...
2017 09 14    01 31 41.0 +21 28 04   0.6657  1.5781   140.6    23.8    21.5
...
2017 09 20    01 33 50.5 +21 58 18   0.6085  1.5446   145.5    21.6    21.2
2017 09 21    01 34 05.9 +22 02 19   0.5994  1.5391   146.3    21.2    21.2
2017 09 22    01 34 19.4 +22 06 02   0.5904  1.5336   147.1    20.8    21.1
...
2017 09 28    01 35 02.6 +22 21 03   0.5395  1.5006   152.2    18.1    20.8
...
2017 10 06    01 34 20.6 +22 18 57   0.4792  1.4577   159.2    14.1    20.3
...
2017 10 21    01 28 52.8 +20 50 14   0.3907  1.3813   169.3     7.7    19.5

A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-S95