[Iaude] MPEC Y03: 2015 XW377 [a=2.52,e=0.59,i=12.7,H=21.2]

[mpec at marsden.cfa.harvard.edu]

M.P.E.C. 2019-Y03                             Issued 2019 December 16, 15:00 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 XW377                                   


                           Revision to MPEC 2015-X176                           

Additional Observations:
     K15Xb7W |C2019 12 15.20104 04 29 17.76 -12 28 42.7          22.1 GVEY003807
     K15Xb7W |C2019 12 15.20876 04 29 17.04 -12 28 45.4          22.2 GVEY003807
     K15Xb7W |C2019 12 15.21645 04 29 16.34 -12 28 48.0          22.0 GVEY003807
     K15Xb7W |C2019 12 16.17761 04 27 53.37 -12 34 02.2          22.1 GVEY003807
     K15Xb7W |C2019 12 16.18191 04 27 52.98 -12 34 04.3          22.0 GVEY003807

Observer details:
807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes.  
    1.00-m f/10.0 astrograph + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
191215 807 0.14- 0.01-    191216 807 0.14- 0.01-    MPO380409   -0.09 days

Orbital elements:
2015 XW377                                          PHA, Earth MOID = 0.0372 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5                  Veres
M  21.33998              (2000.0)            P               Q
n   0.24640497     Peri.    9.31051     -0.88703243     -0.44266853
a   2.5198213      Node   143.48774     +0.40814885     -0.88466260
e   0.5948061      Incl.   12.74049     +0.21584250     -0.14634430
P   4.00           H   21.2           G   0.15           U   1
Residuals in seconds of arc
151209 F51  0.0   0.1-    151215 807  0.4-  0.5+    160320 926  0.4+  0.1+
151209 F51  0.1+  0.2+    151215 807  0.3-  0.3+    160320 926  0.4-  0.0
151209 F51  0.0   0.1+    160110 291  0.1+  0.2-    160425 926  0.1-  0.2+
151210 568  0.2+  0.1-    160110 291  0.4+  0.4-    160425 926  0.3-  0.3+
151210 568  0.0   0.0     160110 291  1.2-  1.4-    160425 926  0.1+  0.1-
151210 568  0.2+  0.0     160111 F51  0.2-  0.0     191215 807  0.0   0.1-
151210 568  0.2+  0.1-    160111 F51  0.2+  0.3-    191215 807  0.2-  0.2-
151210 568  0.2+  0.1-    160111 F51  0.0   0.1+    191215 807  0.1-  0.2-
151211 807  0.4-  0.1+    160211 926  0.2+  0.5+    191216 807  0.1+  0.7+
151211 807  0.1-  0.6+    160211 926  0.2+  0.0     191216 807  0.2+  0.1-
151211 807  0.0   0.3+    160211 926  1.1+  0.1-
151215 807  0.7-  0.4+    160320 926  0.2-  0.4+

Ephemeris:
2015 XW377               a,e,i = 2.52, 0.59, 13                  q = 1.0210
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2019 11 16    04 59 28.8 -06 25 14   0.7518  1.6639   145.5    19.7    22.7
...
2019 12 01    04 47 38.9 -10 08 28   0.6173  1.5437   147.7    19.9    22.1
...
2019 12 09    04 37 55.1 -11 40 36   0.5607  1.4802   145.1    22.4    21.9
...
2019 12 15    04 29 35.5 -12 27 37   0.5245  1.4330   141.7    25.2    21.7
2019 12 16    04 28 09.0 -12 33 12   0.5189  1.4252   141.0    25.8    21.7
2019 12 17    04 26 42.1 -12 38 06   0.5135  1.4175   140.3    26.3    21.7
...
2019 12 23    04 17 57.2 -12 51 47   0.4833  1.3713   135.6    30.1    21.6
...
2019 12 31    04 06 56.0 -12 23 53   0.4486  1.3115   128.7    35.8    21.5
...
2020 01 15    03 52 18.8 -08 59 39   0.3934  1.2073   115.7    47.2    21.4

A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-Y03