[Iaude] MPEC X158: 2015 BK515 [a=1.75,e=0.45,i=5.3,H=20.9]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Wed Dec 8 09:06:30 EST 2021


M.P.E.C. 2021-X158                             Issued 2021 December 8, 14:05 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 BK515                                   


                           Revision to MPEC 2015-C21                            

Additional Observations:
     K15Bp5K  C2013 09 04.46508200 07 27.710-02 43 46.54         23.49GVEX158F51
     K15Bp5K  C2013 09 04.48008300 07 26.510-02 43 56.93         24.18GVEX158F51
     K15Bp5K  C2015 07 02.32311114 02 50.423+08 46 07.10         21.78GVEX158F51
     K15Bp5K  C2015 07 02.33419614 02 54.733+08 45 30.35         21.13GVEX158F51
     K15Bp5K  C2015 07 02.34523514 02 58.979+08 44 54.54         21.00GVEX158F51
     K15Bp5K  C2015 07 02.35622414 03 03.246+08 44 18.22         20.72GVEX158F51
     K15Bp5K  C2015 08 10.28221117 04 20.734-15 00 53.92         21.37GVEX158F51
     K15Bp5K  C2015 08 10.30604617 04 25.160-15 01 20.07         21.60GVEX158F51
     K15Bp5K  C2015 08 10.31795017 04 27.386-15 01 33.05         21.38GVEX158F51
     K15Bp5K  C2020 09 16.42914500 24 20.615-02 06 01.54         23.36GVEX158F51
     K15Bp5K  C2020 09 16.44700800 24 19.193-02 06 12.82         22.96GVEX158F51
     K15Bp5K  C2020 09 16.46472600 24 17.763-02 06 24.21         23.39GVEX158F51
     K15Bp5K  C2020 09 16.47010300 24 17.318-02 06 27.51         22.73GVEX158F52
     K15Bp5K  C2020 09 16.48429700 24 16.146-02 06 37.04         22.69GVEX158F52
     K15Bp5K  C2020 09 18.45255100 21 41.231-02 27 49.13         22.62GVEX158F52
     K15Bp5K  C2020 09 18.47585800 21 39.303-02 28 04.31         22.80GVEX158F52
     K15Bp5K KC2021 12 05.47928 08 40 07.07 +10 28 27.8          22.8 RoEX158291
     K15Bp5K KC2021 12 05.49426 08 40 07.78 +10 28 22.3                oEX158291
     K15Bp5K KC2021 12 05.50929 08 40 08.50 +10 28 17.5          22.7 RoEX158291

Observer details:
291 LPL/Spacewatch II.  Observer M. T. Read.  1.8-m f/2.7 reflector + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A.
    Schultz, I. Smith.  Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
    Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A.
    Schultz, I. Smith.  Measurers S. Chastel, M. Huber, 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, reference and Delta-T
130904 F51  4.4-  1.2-    211205 291 37.1-  5.8-    MPO343854    +845 days

Orbital elements:
2015 BK515                                          PHA, Earth MOID = 0.0470 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
M 320.72725              (2000.0)            P               Q                  
n   0.42582514     Peri.   59.17283     -0.84975797     +0.52545760             
a   1.7497736      Node   152.45872     -0.50961285     -0.79814821             
e   0.4463567      Incl.    5.27294     -0.13493009     -0.29470960             
P   2.31           H   20.94          G   0.15           U   0                  
Residuals in seconds of arc
130904 F51  0.0   0.2+    150423 695  0.0   0.0     150712 104  0.4+  0.5-
130904 F51  0.1+  0.0     150423 695  0.1-  0.1+    150810 F51  0.0   0.1+
150119 J04  0.5-  0.1+    150423 695  0.4-  0.0     150810 F51  0.2-  0.0
150119 J04  0.5-  0.4+    150612 J04  0.3-  0.0     150810 F51  0.0   0.0
150119 J04  0.3-  0.1+    150612 J04  0.2+  0.3+    200916 F51  0.3-  0.3-
150120 J04  1.1-  0.4+    150612 J04  1.0+  0.4+    200916 F51  0.1+  0.0
150120 J04  0.1+  0.4+    150702 F51  0.3-  0.2+    200916 F51  0.2+  0.1+
150127 493  0.0   0.1-    150702 F51  0.2+  0.3-    200916 F52  0.1+  0.3+
150127 493  0.0   0.0     150702 F51  0.0   0.0     200916 F52  0.2-  0.0
150127 493  0.0   0.1+    150702 F51  0.2+  0.3-    200918 F52  0.1+  0.2-
150207 291  0.2-  0.1+    150712 F51 (1.6+  1.1-)   200918 F52  0.2-  0.4-
150207 291  0.3+  0.1-    150712 F51  0.1+  0.1+    211205 291  0.3+  0.4-
150207 291  0.0   0.4-    150712 F51  0.1-  0.3+    211205 291  0.0   0.4-
150211 J04  0.2+  0.2-    150712 104  0.2+  0.0     211205 291  0.1-  0.4+
150211 J04  0.1+  0.2-    150712 104  0.4+  0.5-
150423 695  0.2+  0.2+    150712 104  0.6+  0.7-

Ephemeris:
2015 BK515               a,e,i = 1.75, 0.45, 5                   q = 0.9688
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 08    08 09 10.2 +13 28 37   1.3241  1.8343   103.9    31.6    24.2
...
2021 11 23    08 27 39.4 +11 49 05   1.0962  1.7494   114.1    31.0    23.7
...
2021 12 01    08 36 00.8 +10 56 42   0.9808  1.7024   119.9    30.2    23.4
...
2021 12 07    08 41 24.4 +10 19 15   0.8976  1.6663   124.4    29.2    23.1
2021 12 08    08 42 13.5 +10 13 15   0.8841  1.6602   125.2    29.0    23.0
2021 12 09    08 43 01.0 +10 07 20   0.8706  1.6541   126.0    28.8    23.0
...
2021 12 15    08 47 13.9 +09 33 51   0.7921  1.6173   130.8    27.4    22.7
...
2021 12 23    08 51 14.0 +08 56 25   0.6934  1.5673   137.6    25.0    22.3
...
2022 01 07    08 52 26.4 +08 22 50   0.5295  1.4716   151.9    18.4    21.3

A. U. Tomatic                (C) Copyright 2021 MPC           M.P.E.C. 2021-X158




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