MPEC 2011-Y54 : 2011 YH28
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M.P.E.C. 2011-Y54 Issued 2011 Dec. 29, 18:13 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 YH28
Observations:
K11Y28H* C2011 12 27.41812 09 57 17.56 +08 55 16.6 21.4 VrEY054G96
K11Y28H C2011 12 27.42457 09 57 18.32 +08 55 06.4 21.3 VrEY054G96
K11Y28H C2011 12 27.43087 09 57 19.11 +08 54 55.8 21.1 VrEY054G96
K11Y28H mC2011 12 27.46353 09 57 22.91 +08 54 03.6 oEY054291
K11Y28H mC2011 12 27.46575 09 57 23.18 +08 53 59.9 oEY054291
K11Y28H mC2011 12 27.46798 09 57 23.43 +08 53 56.2 oEY054291
K11Y28H mC2011 12 28.34729 09 59 12.44 +08 29 46.3 oEY054291
K11Y28H mC2011 12 28.35021 09 59 12.73 +08 29 41.6 oEY054291
K11Y28H C2011 12 28.39433 09 59 18.17 +08 28 29.2 cEY054926
K11Y28H C2011 12 28.39564 09 59 18.34 +08 28 26.7 cEY054926
K11Y28H C2011 12 28.39692 09 59 18.49 +08 28 24.6 cEY054926
K11Y28H C2011 12 28.39822 09 59 18.67 +08 28 23.2 cEY054926
K11Y28H C2011 12 28.41234 09 59 20.29 +08 27 58.6 cEY054926
K11Y28H C2011 12 28.41363 09 59 20.46 +08 27 57.1 cEY054926
K11Y28H C2011 12 28.41492 09 59 20.58 +08 27 54.1 cEY054926
K11Y28H C2011 12 28.41623 09 59 20.78 +08 27 51.4 cEY054926
K11Y28H mC2011 12 29.34540 10 01 17.92 +08 01 19.6 oEY054291
K11Y28H mC2011 12 29.34866 10 01 18.28 +08 01 13.9 oEY054291
K11Y28H mC2011 12 29.35190 10 01 18.69 +08 01 08.0 oEY054291
Observer details:
291 LPL/Spacewatch II. Observer R. S. McMillan. 1.8-m f/2.7 reflector + CCD.
926 Tenagra II Observatory. Observers S. Abe, J. K. Guo, N. Panwar,
W. P. Chen, W. H. Ip. Measurer S. Abe. 0.81-m f/7 Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey. Observer R. A. Kowalski. Measurers J. D. Ahern,
E. C. Beshore, A. Boattini, A. R. Gibbs, A. D. Grauer, R. E. Hill,
R. A. Kowalski, S. M. Larson, R. H. McNaught. 1.5-m reflector + CCD.
Orbital elements:
2011 YH28 PHA, Earth MOID = 0.0130 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 358.87981 (2000.0) P Q
n 0.24386113 Peri. 287.48312 -0.82944481 +0.53999180
a 2.5373146 Node 285.41814 -0.43954419 -0.78885378
e 0.7009215 Incl. 8.52669 -0.34470598 -0.29345966
P 4.04 H 20.2 G 0.15 U 9
Residuals in seconds of arc
111227 G96 0.5- 0.3- 111228 291 1.2- 0.2- 111228 926 0.5+ 0.4+
111227 G96 0.4- 0.1- 111228 926 1.2+ 1.0+ 111228 926 1.1+ 0.1-
111227 G96 0.4+ 0.5- 111228 926 1.4+ 0.7+ 111229 291 0.2+ 0.0
111227 291 0.1- 0.0 111228 926 1.4+ 0.8+ 111229 291 0.4- 0.1-
111227 291 0.0 0.1- 111228 926 1.7+ 1.5+ 111229 291 0.2- 0.4-
111227 291 0.1- 0.2- 111228 926 0.8+ 0.6+
111228 291 0.3- 0.4- 111228 926 1.0+ 1.3+
Ephemeris:
2011 YH28 a,e,i = 2.54, 0.70, 9 q = 0.7589
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2011 11 29 09 07 39.1 +17 19 35 1.0866 1.7199 112.0 32.1 22.9
...
2011 12 14 09 32 27.2 +13 44 12 0.8200 1.5684 120.5 32.8 22.1
...
2011 12 22 09 46 44.9 +11 07 44 0.6882 1.4856 124.4 33.1 21.6
...
2011 12 28 09 58 28.8 +08 39 33 0.5949 1.4228 126.9 33.5 21.2
2011 12 29 10 00 33.5 +08 11 26 0.5799 1.4122 127.3 33.6 21.2
2011 12 30 10 02 41.0 +07 42 10 0.5650 1.4017 127.6 33.7 21.1
...
2012 01 05 10 16 36.0 +04 17 49 0.4790 1.3383 129.1 34.7 20.7
...
2012 01 13 10 40 05.6 -02 04 24 0.3745 1.2534 129.0 37.6 20.1
...
2012 01 28 12 04 54.1 -24 58 54 0.2277 1.0961 113.7 55.4 19.2
A. U. Tomatic (C) Copyright 2011 MPC M.P.E.C. 2011-Y54
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