MPEC 2011-E45 : 2011 ET20
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M.P.E.C. 2011-E45 Issued 2011 Mar. 8, 22:20 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 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
2011 ET20
Observations:
K11E20T* C2011 03 06.23540 10 19 26.43 +07 57 51.0 21.3 VrEE045G96
K11E20T C2011 03 06.24123 10 19 28.27 +07 58 13.8 21.1 VrEE045G96
K11E20T C2011 03 06.24707 10 19 30.14 +07 58 36.0 21.1 VrEE045G96
K11E20T C2011 03 06.36674 10 20 07.70 +08 06 12.5 20.8 RoEE045H01
K11E20T C2011 03 06.37574 10 20 10.59 +08 06 46.6 20.6 RoEE045H01
K11E20T C2011 03 06.38068 10 20 12.17 +08 07 05.4 21.1 RoEE045H01
K11E20T C2011 03 06.39110 10 20 15.50 +08 07 44.6 20.1 RoEE045H01
K11E20T KC2011 03 07.92690 10 28 41.35 +09 39 20.1 20.7 RuEE045J95
K11E20T KC2011 03 07.95224 10 28 48.76 +09 40 46.5 21.1 RuEE045J95
K11E20T KC2011 03 07.97989 10 28 56.84 +09 42 19.7 21.0 RuEE045J95
K11E20T KC2011 03 08.00150 10 29 03.10 +09 43 31.9 20.5 RuEE045J95
Observer details:
G96 Mt. Lemmon Survey. Observer S. M. Larson. Measurers J. D. Ahern,
E. C. Beshore, A. Boattini, G. J. Garradd, A. R. Gibbs, A. D. Grauer,
R. E. Hill, R. A. Kowalski, S. M. Larson, R. H. McNaught. 1.5-m reflector
+ CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 reflector + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
Orbital elements:
2011 ET20 Earth MOID = 0.0713 AU
Epoch 2011 Feb. 8.0 TT = JDT 2455600.5 MPC
M 6.81728 (2000.0) P Q
n 0.45016292 Peri. 313.35789 -0.48573539 -0.87334175
a 1.6861242 Node 165.57443 +0.83840781 -0.47731596
e 0.4033858 Incl. 8.43476 +0.24725184 -0.09717850
P 2.19 H 25.0 G 0.15 U 8
Residuals in seconds of arc
110306 G96 0.1+ 0.4- 110306 H01 0.0 0.3+ 110307 J95 0.1- 0.2+
110306 G96 0.0 0.2- 110306 H01 0.0 0.4+ 110307 J95 0.3+ 0.2+
110306 G96 0.2+ 0.6- 110306 H01 0.1- 0.3+ 110308 J95 0.0 0.1-
110306 H01 0.2- 0.2+ 110307 J95 0.2- 0.4-
Ephemeris:
2011 ET20 a,e,i = 1.69, 0.40, 8 q = 1.0060
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2011 02 06 05 30 54.4 -34 31 55 0.09221 1.0161 106.5 68.5 22.3
...
2011 02 21 08 26 45.7 -13 39 28 0.07582 1.0508 143.6 33.9 20.9
...
2011 03 01 09 44 05.6 +01 09 06 0.09095 1.0781 163.2 15.4 20.8
...
2011 03 07 10 23 42.7 +08 46 03 0.1117 1.1019 168.5 10.3 21.1
2011 03 08 10 29 02.8 +09 44 15 0.1158 1.1061 168.5 10.3 21.2
2011 03 09 10 34 04.4 +10 37 57 0.1200 1.1104 168.2 10.5 21.3
...
2011 03 15 10 58 48.6 +14 40 43 0.1479 1.1375 164.4 13.6 21.9
...
2011 03 23 11 21 28.6 +17 33 35 0.1912 1.1765 158.6 18.0 22.7
...
2011 04 07 11 47 42.8 +18 48 33 0.2887 1.2566 148.8 24.4 23.9
Timothy B. Spahr (C) Copyright 2011 MPC M.P.E.C. 2011-E45
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