[Iaude] MPEC B158: 2012 PS4 [a=1.77,e=0.59,i=3.9,H=21.2,PHA]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Thu Jan 31 07:47:17 EST 2019


M.P.E.C. 2019-B158                               Issued 2019 Jan. 31, 12:43 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


                                   2012 PS4
 
                           Revision to MPEC 2012-P22
 
Additional Observations:
     K12P04S  C2019 01 03.33164605 27 18.803+23 56 42.44         23.62GVEB158T14
     K12P04S  C2019 01 03.33421205 27 18.492+23 56 42.51         23.61GVEB158T14
     K12P04S  C2019 01 03.33684905 27 18.172+23 56 42.53         23.68GVEB158T14
     K12P04S KC2019 01 08.35200805 17 41.153+23 57 10.74         24.63GVEB158T12
 
Observer details:
T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m).  Observer D. Hung.  Measurer
    D. J. Tholen.  2.24-m f/10.1 reflector + CCD.
T14 Mauna Kea-UH/Tholen NEO Follow-Up (CFHT).  Observer C. Wipper.  Measurer
    D. J. Tholen.  3.6-m f/4.1 reflector + MegaCam.
 
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
190103 T14 0.05- 0.01-    190108 T12 0.04- 0.01-    MPO242008   +0.12 day
 
Orbital elements:
2012 PS4                                            PHA, Earth MOID = 0.0461 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
M 333.83298              (2000.0)            P               Q
n   0.41940074     Peri.  144.18666     -0.63568808     +0.76889806
a   1.7675970      Node    86.23991     -0.72327169     -0.56222861
e   0.5927301      Incl.    3.93808     -0.26977533     -0.30445816
P   2.35           H   21.2           G   0.15           U   2
Residuals in seconds of arc
120807 E12  0.1+  0.1-    120809 E23  0.3-  0.1+    120817 474  0.1-  0.2+
120807 E12  0.3+  0.0     120809 E23  1.2-  0.8+    120817 474  0.0   0.4+
120807 E12  0.1-  0.0     120809 E23  0.0   0.4+    120817 E12  0.1+  0.1-
120807 E12  0.3+  0.1+    120810 807  0.2+  0.0     120821 E12  0.0   0.1-
120807 E12  0.4-  0.2-    120810 807  0.2+  0.1-    120821 E12  0.1-  0.1-
120807 E12  0.1+  0.0     120810 807  0.0   0.1+    120822 474  0.1-  0.1+
120808 954  0.1+  0.0     120810 807  0.1+  0.0     120822 474  0.1+  0.6+
120808 954  0.4-  0.1+    120810 H36  0.3+  0.1-    120822 474  0.0   0.2+
120808 954  0.0   0.1+    120810 H36  0.0   0.1+    120822 474  0.1+  0.1+
120808 954  0.1+  0.4+    120810 H36  0.2+  0.0     120822 474  0.4+  0.1+
120808 D90  0.3-  0.1-    120810 E12  0.1-  0.1-    120822 474  0.1-  0.2+
120808 D90  0.4-  0.0     120810 E12  0.0   0.0     120823 474  0.1-  0.2+
120808 D90  0.3-  0.0     120812 D90  0.2-  0.0     120823 474  0.0   0.2+
120809 821  0.1-  0.0     120812 D90  0.1-  0.1-    120823 474  0.1-  0.2+
120809 821  0.1-  0.0     120812 D90  0.1+  0.1+    120823 474  0.1+  0.2+
120809 821  0.1-  0.0     120813 E12  0.1+  0.2-    120823 474  0.0   0.1+
120809 807  0.0   0.2+    120813 E12  0.4+  0.1-    120912 807  0.5-  0.3+
120809 807  0.0   0.1+    120814 E12  0.1-  0.2-    120912 807  0.1-  0.1-
120809 807  0.1+  0.1+    120814 E12  0.1+  0.2-    120912 807  0.0   0.1+
120809 807  0.2-  0.2+    120816 E12  0.0   0.1-    190103 T14  0.0   0.1-
120809 E12  0.3-  0.1-    120816 E12  0.1-  0.0     190103 T14  0.0   0.1-
120809 E23 (1.3+  2.1+)   120817 474  0.0   0.5+    190103 T14  0.0   0.1-
120809 E23  0.6-  0.5+    120817 474  0.1+  0.4+    190108 T12  0.0   0.1-
120809 E23  1.4+  0.6+    120817 474  0.0   0.3+

Ephemeris:
2012 PS4                 a,e,i = 1.77, 0.59, 4                   q = 0.7199
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2019 01 01    05 31 55.8 +23 55 46   1.1165  2.0784   163.6     7.7    23.6
...
2019 01 16    05 04 25.6 +23 54 54   1.1114  1.9814   142.0    17.8    23.8
...
2019 01 24    04 53 08.8 +23 51 08   1.1296  1.9268   131.3    22.6    24.0
...
2019 01 30    04 46 45.4 +23 49 06   1.1500  1.8845   123.8    25.8    24.1
2019 01 31    04 45 52.5 +23 48 54   1.1538  1.8773   122.5    26.3    24.1
2019 02 01    04 45 02.8 +23 48 46   1.1578  1.8702   121.3    26.7    24.1
...
2019 02 07    04 41 11.9 +23 49 20   1.1831  1.8263   114.4    29.5    24.2
...
2019 02 15    04 39 00.7 +23 54 18   1.2196  1.7659   105.8    32.6    24.2
...
2019 03 02    04 43 14.4 +24 16 56   1.2864  1.6470    91.7    37.0    24.3

A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-B158



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