MPEC 2011-U67 : 2011 US91
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M.P.E.C. 2011-U67 Issued 2011 Oct. 24, 18:23 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 US91
Observations:
K11U91S* C2011 10 23.29330 00 22 30.276+35 44 28.96 20.0 rLEU067F51
K11U91S C2011 10 23.30545 00 22 22.322+35 45 13.54 19.9 rLEU067F51
K11U91S C2011 10 23.31991 00 22 12.901+35 46 05.95 20.0 gLEU067F51
K11U91S C2011 10 24.08780 00 14 30.84 +36 28 28.7 18.4 RoEU067H01
K11U91S C2011 10 24.09345 00 14 27.44 +36 28 47.2 18.6 RoEU067H01
K11U91S C2011 10 24.10116 00 14 22.78 +36 29 12.3 18.7 RoEU067H01
K11U91S C2011 10 24.10787 00 14 18.74 +36 29 34.0 18.6 RoEU067H01
K11U91S %C2011 10 24.22833900 13 09.56 +36 35 55.0 19.3 RoEU067F65
K11U91S %C2011 10 24.22892600 13 09.22 +36 35 56.9 19.2 RoEU067F65
K11U91S %C2011 10 24.22951000 13 08.87 +36 35 58.6 18.9 RoEU067F65
K11U91S %C2011 10 24.23009200 13 08.53 +36 36 00.4 19.3 RoEU067F65
K11U91S %C2011 10 24.23068500 13 08.18 +36 36 02.6 18.9 RoEU067F65
K11U91S %C2011 10 24.23127900 13 07.81 +36 36 04.3 18.8 RoEU067F65
K11U91S %C2011 10 24.23187600 13 07.45 +36 36 06.3 19.0 RoEU067F65
K11U91S %C2011 10 24.23247500 13 07.11 +36 36 08.1 18.8 RoEU067F65
K11U91S %C2011 10 24.23308800 13 06.74 +36 36 10.1 18.9 RoEU067F65
K11U91S HC2011 10 24.28610 00 12 31.58 +36 38 46.3 oEU067291
K11U91S HC2011 10 24.28787 00 12 30.51 +36 38 51.8 oEU067291
K11U91S HC2011 10 24.28964 00 12 29.43 +36 38 56.8 oEU067291
K11U91S C2011 10 24.71175 00 08 35.57 +36 59 06.8 18.5 RuEU067B18
K11U91S C2011 10 24.71244 00 08 35.17 +36 59 08.8 18.3 RuEU067B18
K11U91S C2011 10 24.71527 00 08 33.54 +36 59 17.3 18.6 RuEU067B18
Observer details:
291 LPL/Spacewatch II. Observer T. H. Bressi. 1.8-m f/2.7 reflector + CCD.
B18 Terskol. Observers M. Andreev, A. Sergeev, N. Parakhin, V. Kozlov,
N. Karpov. Measurer M. Andreev. 0.6-m f/12.8 Cassegrain + CCD.
F51 F51 Pan-STARRS 1, Haleakala. Observers N. Primak, A. Schultz, S. Watters,
J. Thiel, T. Goggia. Measurer PS1 Science Consortium. 1.8-m
Ritchey-Chretien + CCD.
F65 Haleakala-Faulkes Telescope North. Observer T. Lister. 2.0-m f/10
Ritchey-Chretien + 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.
Orbital elements:
2011 US91 Earth MOID = 0.0744 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 MPC
M 42.46328 (2000.0) P Q
n 0.93565064 Peri. 245.77518 -0.08235679 +0.97960221
a 1.0352858 Node 22.00773 -0.64023007 +0.08894372
e 0.2387913 Incl. 29.28377 -0.76375573 -0.18019026
P 1.05 H 22.3 G 0.15 U 7
Residuals in seconds of arc
111023 F51 0.2- 0.1+ 111024 F65 0.1- 0.0 111024 291 0.1+ 0.0
111023 F51 0.2- 0.1+ 111024 F65 0.1- 0.2- 111024 291 0.0 0.3+
111023 F51 0.4+ 0.2- 111024 F65 0.0 0.3- 111024 291 0.2- 0.1+
111024 H01 0.3+ 0.1- 111024 F65 0.0 0.0 111024 B18 0.1+ 0.3-
111024 H01 0.3+ 0.0 111024 F65 0.1- 0.1- 111024 B18 0.1+ 0.3-
111024 H01 0.1+ 0.0 111024 F65 0.2- 0.0 111024 B18 0.1- 0.1+
111024 H01 0.2+ 0.0 111024 F65 0.0 0.2-
111024 F65 0.2- 0.1- 111024 F65 0.0 0.1-
Ephemeris:
2011 US91 a,e,i = 1.04, 0.24, 29 q = 0.7881
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2011 09 24 06 28 34.6 -33 43 07 0.1817 1.0018 84.3 85.3 21.6
...
2011 10 09 04 03 15.0 -05 26 04 0.09159 1.0624 131.9 44.4 18.9
...
2011 10 17 01 46 58.4 +24 32 27 0.09984 1.0929 163.6 14.9 18.3
...
2011 10 23 00 25 34.8 +35 26 12 0.1365 1.1147 149.3 27.1 19.4
2011 10 24 00 15 19.6 +36 23 57 0.1440 1.1183 146.9 29.0 19.6
2011 10 25 00 05 57.3 +37 12 19 0.1517 1.1218 144.7 30.8 19.8
...
2011 10 31 23 25 02.4 +39 56 16 0.2015 1.1421 134.0 38.7 20.7
...
2011 11 08 22 57 36.2 +41 06 28 0.2731 1.1674 124.5 44.4 21.5
...
2011 11 23 22 44 38.9 +41 42 15 0.4113 1.2087 112.9 48.8 22.6
A. U. Tomatic (C) Copyright 2011 MPC M.P.E.C. 2011-U67
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