MPEC 2018-D92 : 2013 GZ7
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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@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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