[Iaude] MPEC F149: 2017 XA2 [a=1.41,e=0.49,i=26.5,H=19.9]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Thu Mar 29 06:37:16 EDT 2018


M.P.E.C. 2018-F149                               Issued 2018 Mar. 29, 10:34 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


                                   2017 XA2
 
                          Revision to MPEC 2017-X109
 
Additional Observations:
     K17X02A  C2014 12 29.56604 08 46 37.912+32 46 15.71         22.6 GUEF149F51
     K17X02A  C2014 12 29.57785 08 46 36.848+32 46 30.24         22.4 GUEF149F51
     K17X02A  C2014 12 29.58963 08 46 35.810+32 46 44.94         21.7 GUEF149F51
     K17X02A  C2014 12 29.60145 08 46 34.762+32 46 59.36         22.4 GUEF149F51
     K17X02A  C2015 01 11.52065 08 23 46.981+37 09 22.08         20.6 GUEF149F51
     K17X02A  C2015 01 11.53267 08 23 45.462+37 09 36.17         21.8 GUEF149F51
     K17X02A  C2015 01 11.54471 08 23 43.981+37 09 49.93         22.9 GUEF149F51
     K17X02A  C2015 01 13.50600 08 19 36.471+37 47 02.36         22.4 GUEF149F51
     K17X02A  C2015 01 13.51819 08 19 34.821+37 47 15.74         22.4 GUEF149F51
     K17X02A  C2017 03 11.46708 13 22 07.897+59 39 01.88         20.4 GUEF149F51
     K17X02A  C2017 03 11.48148 13 22 06.834+59 39 30.69         22.0 GUEF149F51
     K17X02A  C2017 03 11.49587 13 22 05.822+59 39 59.24         21.5 GUEF149F51
     K17X02A  C2017 03 11.51025 13 22 04.832+59 40 27.88         21.3 GUEF149F51
     K17X02A  C2017 04 03.40710 12 26 38.733+69 20 59.18         21.6 GUEF149F51
     K17X02A  C2017 04 03.42009 12 26 35.538+69 21 11.07         20.8 GUEF149F51
     K17X02A  C2017 04 03.43305 12 26 32.354+69 21 22.51         21.2 GUEF149F51
     K17X02A  C2017 04 03.44603 12 26 29.189+69 21 34.28         21.2 GUEF149F51
     K17X02A  C2017 04 27.26178 10 49 41.645+70 26 10.26         21.1 GUEF149F51
     K17X02A  C2017 04 27.29876 10 49 33.367+70 25 52.28         21.1 GUEF149F51
 
Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers B. Gibson, T. Goggia, S. Kahale,
    T. Lowe, A. Schultz, M. Willman.  Measurers R. Weryk, C. Waters,
    R. Wainscoat.  1.8-m Ritchey-Chretien + CCD.
 
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
141229 F51 0.14+ 0.04+    170427 F51 0.01+ 0.04+    MPO431256   -0.017 day
 
Orbital elements:
2017 XA2                                                 Earth MOID = 0.2682 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 150.80695              (2000.0)            P               Q
n   0.58891115     Peri.  199.82453     +0.39982768     +0.80230819
a   1.4096226      Node    95.97168     -0.76932783     +0.55661021
e   0.4875633      Incl.   26.46385     -0.49826952     -0.21560761
P   1.67           H   19.9           G   0.15           U   1
Residuals in seconds of arc
141229 F51  0.2+  0.2-    171209 807  0.2+  0.2-    171213 926  0.7-  0.2-
141229 F51  0.0   0.2-    171209 807  0.2+  0.1+    171213 926  0.7+  0.5+
141229 F51  0.1+  0.1+    171209 I52  0.1-  0.2+    171213 926  0.2-  0.2-
141229 F51  0.1+  0.0     171209 I52  0.5-  0.4-    171213 691  0.0   0.1+
150111 F51  0.6-  0.4-    171209 I52  0.1-  0.2+    171213 691  0.0   0.4+
150111 F51  0.4-  0.1-    171209 I52  0.3-  0.9-    171213 691  0.4-  0.1-
150111 F51  0.3+  0.1-    171209 926  0.2-  0.0     171214 I52  0.2+  0.2-
150113 F51  0.5+  0.1+    171209 926  0.0   0.7-    171214 I52  0.1-  0.1+
150113 F51  0.0   0.1-    171209 568  0.1+  0.0     171214 926  0.6-  0.1+
170311 F51  0.5+  0.2+    171209 568  0.1+  0.0     171214 926  0.1-  0.4-
170311 F51  0.0   0.2+    171209 568  0.1+  0.0     171214 926  0.1-  0.1-
170311 F51  0.0   0.1+    171209 H01  0.2+  0.1+    171216 691  0.6-  0.1+
170311 F51  0.1+  0.1+    171209 H01  0.1+  0.0     171216 691  0.3-  0.2-
170403 F51  0.1+  0.0     171209 H01  0.1+  0.1-    171223 V06  0.0   0.6-
170403 F51  0.1-  0.1+    171209 H01  0.1+  0.0     171223 V06  0.1+  0.1+
170403 F51  0.2-  0.1-    171210 807  0.2-  0.9-    171223 V06  0.2+  0.0
170403 F51  0.2-  0.1+    171210 807  0.1+  1.0-    171223 V06  0.1+  0.0
170427 F51  0.1+  0.1-    171210 807  0.5+  0.4-    171223 691  0.2-  0.3+
170427 F51  0.0   0.1-    171211 H21  0.3+  0.4-    171223 691  0.3+  0.0
171208 F51  0.0   0.0     171211 H21  0.3+  0.5-    171223 691  0.3-  1.5+
171208 F51  0.4+  0.0     171211 H21  0.3+  0.2-    171223 F51  0.2+  0.0
171208 F51  0.1+  0.1+    171212 926  0.4-  0.3+    171223 F51  0.1-  0.1+
171208 F51  0.0   0.0     171212 926  0.7+  0.1+    171223 F51  0.1+  0.0
171209 807  0.0   0.3-    171212 926  0.6-  0.6-

Ephemeris:
2017 XA2                 a,e,i = 1.41, 0.49, 26                  q = 0.7223
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 02 27    04 25 51.3 +22 50 04   1.7409  2.0075    90.3    29.6    23.9
...
2018 03 14    04 43 13.6 +25 02 13   1.9711  2.0404    79.6    28.6    24.2
...
2018 03 22    04 54 03.9 +26 03 16   2.0894  2.0548    74.2    27.8    24.3
...
2018 03 28    05 02 47.6 +26 44 57   2.1752  2.0642    70.3    27.1    24.4
2018 03 29    05 04 17.6 +26 51 34   2.1892  2.0657    69.6    26.9    24.4
2018 03 30    05 05 48.3 +26 58 05   2.2031  2.0671    69.0    26.8    24.4
...
2018 04 05    05 15 07.4 +27 35 07   2.2850  2.0749    65.2    26.0    24.5
...
2018 04 13    05 28 09.6 +28 19 08   2.3889  2.0835    60.3    24.7    24.5
...
2018 04 28    05 54 14.2 +29 25 10   2.5654  2.0939    51.6    22.1    24.6

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-F149



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