[Iaude] MPEC B74: 2015 BG4 [a=1.59,e=0.34,i=1.2,H=26.3]

mpec at si.edu mpec at si.edu
Fri Jan 27 10:53:22 EST 2017


M.P.E.C. 2017-B74                                Issued 2017 Jan. 27, 15:50 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 BG4
 
                           Revision to MPEC 2015-B70
 
Additional Observations:
     K15B04G  C2017 01 26.44933 07 51 32.558+13 17 16.32         21.5 wLEB074F51
     K15B04G  C2017 01 26.47058 07 51 40.898+13 17 18.99         21.3 wLEB074F51
     K15B04G  C2017 01 26.48119 07 51 45.074+13 17 20.13         21.2 wLEB074F51
     K15B04G  C2017 01 27.29634 07 57 45.95 +13 19 20.0          21.5 RoEB074926
     K15B04G  C2017 01 27.30284 07 57 48.44 +13 19 20.4          21.5 RoEB074926
     K15B04G  C2017 01 27.30933 07 57 50.94 +13 19 21.5          21.3 RoEB074926
 
Observer details:
926 Tenagra II Observatory.  Observers M. Schwartz, P. R. Holvorcem.  Measurer
    M. Schwartz.  0.81-m f/7 Ritchey-Chretien + CCD.
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.
 
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or integer in degrees), reference and Delta-T
170126 F51   18-    4+    170127 926   18-    4+    MPO369256   +1.2 day
 
Orbital elements:
2015 BG4                                                 Earth MOID = 0.0621 AU
Epoch 2017 Feb. 16.0 TT = JDT 2457800.5                 MPC
M  15.93178              (2000.0)            P               Q
n   0.49169974     Peri.  322.73103     -0.39443356     -0.91887038
a   1.5897765      Node   150.49581     +0.84789804     -0.36810774
e   0.3431652      Incl.    1.15999     +0.35424720     -0.14203492
P   2.00           H   26.3           G   0.15           U   2
Residuals in seconds of arc
150118 G96  0.1-  0.1-    150119 G96  0.8-  0.3+    150212 J04  0.2-  0.0
150118 G96  0.0   0.0     150119 G96  1.2+  0.3+    150212 J04  0.3-  0.2-
150118 G96  0.5+  0.2-    150119 G96  0.5+  0.1-    150213 H21  0.0   0.0
150118 G96  0.1-  0.1+    150119 H01  0.2+  0.0     150213 H21  0.0   0.3+
150118 H01  0.0   0.1-    150119 H01  0.0   0.0     150213 H21  0.4-  0.7-
150118 H01  0.1+  0.0     150119 H01  0.0   0.0     150215 H21  0.5+  0.0
150118 H01  0.0   0.1+    150119 H01  0.0   0.0     150215 H21  0.5+  0.2-
150118 G96  0.3+  0.3-    150119 H21  0.1+  0.3+    150215 H21  0.2+  0.5-
150118 H01  0.3+  0.2+    150119 H21  0.0   0.3+    150220 H21  0.0   0.0
150118 G96  0.8-  0.1+    150119 H21  0.1+  0.3-    150220 H21  0.6+  0.7+
150118 G96  0.3+  0.3-    150124 474  0.7+  0.4+    150220 H21  0.2-  0.6-
150118 G96  0.0   0.1-    150124 474  0.1+  0.1+    170126 F51  0.0   0.2+
150118 033  1.0-  0.5-    150124 474  0.1-  0.4-    170126 F51  0.0   0.0
150118 033 (1.9+  0.4-)   150209 705  0.4-  0.5+    170126 F51  0.1-  0.1-
150119 033  1.1-  0.3-    150209 705  0.2-  0.3+    170127 926  0.7+  0.4+
150119 033 (1.8+  0.2-)   150209 705  0.3-  0.5+    170127 926  0.3+  0.2-
150119 G96  0.0   0.1-    150212 J04  0.1-  0.0     170127 926  0.0   0.0

Ephemeris:
2015 BG4                 a,e,i = 1.59, 0.34, 1                   q = 1.0442
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2016 12 28    04 45 34.3 +10 02 52   0.08378 1.0583   152.2    25.7    22.2
...
2017 01 12    06 02 29.3 +11 38 50   0.06640 1.0444   156.0    22.6    21.6
...
2017 01 20    07 02 04.4 +12 44 58   0.06432 1.0455   162.5    16.4    21.3
...
2017 01 26    07 48 14.4 +13 16 06   0.06700 1.0502   167.8    11.4    21.2
2017 01 27    07 55 36.6 +13 19 11   0.06781 1.0513   168.7    10.6    21.2
2017 01 28    08 02 49.7 +13 21 42   0.06872 1.0525   169.4     9.9    21.2
...
2017 02 03    08 42 13.8 +13 26 00   0.07628 1.0615   173.4     6.1    21.3
...
2017 02 11    09 22 55.4 +13 12 54   0.09133 1.0781   176.2     3.5    21.6
...
2017 02 26    10 08 46.9 +12 31 19   0.1329  1.1220   172.3     6.8    22.7

A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-B74




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