[Iaude] MPEC D92: 2013 GZ7 [a=1.41,e=0.19,i=5.3,H=23.9]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Wed Feb 28 15:33:16 EST 2018


M.P.E.C. 2018-D92                                Issued 2018 Feb. 28, 20:29 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


                                   2013 GZ7
 
                           Revision to MPEC 2013-G21
 
Additional Observations:
     K13G07Z  C2018 02 26.42885 12 38 40.87 +19 31 27.4          22.1 GUED092G96
     K13G07Z  C2018 02 26.43524 12 38 41.04 +19 31 22.9          22.6 GUED092G96
     K13G07Z  C2018 02 26.44165 12 38 41.19 +19 31 18.5          21.7 GUED092G96
     K13G07Z KC2018 02 27.33706312 39 20.76 +19 20 37.0          22.4 VuED092H21
     K13G07Z KC2018 02 27.34887612 39 21.07 +19 20 28.1          22.6 VuED092H21
     K13G07Z KC2018 02 27.36740912 39 21.52 +19 20 14.8          22.1 VuED092H21
 
Observer details:
G96 Mt. Lemmon Survey.  Observer G. J. Leonard.  Measurers E. J. Christensen,
    D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
    S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly.
    1.5-m reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  1.3-m f/4.0
    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
180226 G96 1.82+ 1.26-    180227 H21 1.86+ 1.27-    MPO265055   -0.43 day
 
Orbital elements:
2013 GZ7                                                 Earth MOID = 0.1380 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 356.74106              (2000.0)            P               Q
n   0.59155885     Peri.  165.43191     -0.99158479     +0.12484926
a   1.4054134      Node    21.82844     -0.12607287     -0.87117351
e   0.1916045      Incl.    5.28335     -0.02941496     -0.47483616
P   1.67           H   23.9           G   0.15           U   1
Residuals in seconds of arc
130404 F51  0.3-  0.0     130406 807  0.3+  0.1+    130411 291  0.1+  0.1+
130404 F51  0.1-  0.2+    130406 807  0.1+  0.1+    130413 J04  0.7+  0.2+
130404 F51  0.1-  0.2-    130406 H01  0.1-  0.1+    130413 J04  0.1+  0.2+
130404 F51  0.1-  0.2-    130406 H01  0.1-  0.0     130413 J04  0.8+  0.2+
130405 H21  0.1+  0.4+    130406 H01  0.1-  0.2+    130413 J04  0.7+  0.1+
130405 I41  0.1+  0.2-    130406 H01  0.1-  0.1+    130507 568  0.0   0.1-
130405 H21  0.0   0.4+    130407 807  0.1-  0.1+    130507 568  0.1+  0.1+
130405 H21  0.0   0.4+    130407 807  0.1-  0.1+    130507 568  0.1-  0.0
130405 I41  0.1+  0.6-    130407 807  0.4+  0.1+    180226 G96  0.0   0.0
130405 568  0.3-  0.0     130407 807  0.4+  0.0     180226 G96  0.1-  0.1+
130405 568  0.2-  0.0     130407 807  0.1+  0.1+    180226 G96  0.5-  0.2+
130405 568  0.2-  0.0     130408 448  0.7-  0.1+    180227 H21  0.3+  0.0
130405 568  0.3-  0.1-    130408 448  0.3+  0.4-    180227 H21  0.3+  0.3-
130405 568  0.3-  0.1-    130408 448  0.1+  0.5+    180227 H21  0.1-  0.1+
130405 I41  0.4+  0.5-    130411 291  0.3+  0.1+
130406 807  0.2+  0.2+    130411 291  0.1+  0.2-

Ephemeris:
2013 GZ7                 a,e,i = 1.41, 0.19, 5                   q = 1.1361
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 01 29    11 59 09.1 +22 15 58   0.2893  1.2051   134.4    35.7    23.1
...
2018 02 13    12 24 14.0 +21 19 53   0.2299  1.1757   141.4    31.6    22.4
...
2018 02 21    12 33 53.7 +20 25 40   0.2040  1.1629   145.5    28.8    22.0
...
2018 02 27    12 39 06.4 +19 24 57   0.1873  1.1548   149.0    26.2    21.8
2018 02 28    12 39 47.9 +19 12 43   0.1848  1.1536   149.6    25.8    21.7
2018 03 01    12 40 26.3 +18 59 49   0.1823  1.1524   150.2    25.3    21.7
...
2018 03 07    12 43 09.2 +17 27 12   0.1686  1.1462   154.0    22.3    21.4
...
2018 03 15    12 43 44.8 +14 37 09   0.1540  1.1401   159.7    17.6    21.0
...
2018 03 30    12 37 59.8 +06 39 38   0.1396  1.1362   169.7     9.0    20.5

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-D92



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