MPEC 2011-A10 : 2001 YM4
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M.P.E.C. 2011-A10 Issued 2011 Jan. 4, 09:37 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.org/iau/mpc.html ISSN 1523-6714
2001 YM4
Revision to MPEC 2001-Y50
Additional Observations:
K01Y04M C2011 01 03.26719 06 59 51.07 +38 46 17.5 19.0 cEA010704
K01Y04M C2011 01 03.28036 06 59 48.22 +38 45 20.1 18.8 cEA010704
K01Y04M C2011 01 03.29355 06 59 45.32 +38 44 20.6 19.0 cEA010704
K01Y04M C2011 01 03.30683 06 59 42.41 +38 43 22.6 19.0 cEA010704
K01Y04M C2011 01 03.32016 06 59 39.40 +38 42 24.5 19.2 cEA010704
K01Y04M C2011 01 04.23981406 56 31.76 +37 35 12.7 18.3 VoEA010H21
K01Y04M C2011 01 04.24732806 56 30.19 +37 34 40.5 19.3 VoEA010H21
K01Y04M C2011 01 04.25464106 56 28.70 +37 34 08.2 18.0 VoEA010H21
K01Y04M KC2011 01 04.29062 06 56 21.38 +37 31 31.4 19.0 RuEA010H36
K01Y04M KC2011 01 04.29222 06 56 21.04 +37 31 24.3 18.9 RuEA010H36
K01Y04M KC2011 01 04.29554 06 56 20.37 +37 31 10.2 18.8 RuEA010H36
K01Y04M KC2011 01 04.30064 06 56 19.33 +37 30 47.9 18.9 RuEA010H36
K01Y04M KC2011 01 04.30223 06 56 18.98 +37 30 40.5 18.9 RuEA010H36
K01Y04M C2011 01 04.33168 06 56 13.29 +37 28 35.6 19.3 RcEA010854
K01Y04M C2011 01 04.33362 06 56 12.85 +37 28 27.0 19.2 RcEA010854
K01Y04M C2011 01 04.33554 06 56 12.45 +37 28 19.0 19.2 RcEA010854
K01Y04M C2011 01 04.36114 06 56 07.01 +37 26 26.2 18.3 RoEA010H01
K01Y04M C2011 01 04.36914 06 56 05.35 +37 25 51.1 18.4 RoEA010H01
K01Y04M C2011 01 04.38115 06 56 02.86 +37 24 58.5 18.2 RoEA010H01
K01Y04M C2011 01 04.38640 06 56 01.77 +37 24 35.5 18.2 RoEA010H01
Observer details:
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, G. Spitz,
R. Brungard, J. Paige, P. Festler, T. McVey, A. Valdivia. 1.0-m f/2.15
reflector + CCD.
854 Sabino Canyon Observatory, Tucson. Observer J. E. McGaha. 0.36-m f/10.0
Schmidt-Cassegrain + CCD.
H01 Magdalena Ridge Observatory, Socorro. Observer W. H. Ryan. 2.4-m f/8.9
reflector + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers R. Holmes, H. Devore. 0.76-m f/6.8 Cassegrain + CCD.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
110103 704 3.53+ 2.31- 110104 H01 3.51+ 2.22- MPO 70320 -1.5 day
Orbital elements:
2001 YM4 Earth MOID = 0.3084 AU
Epoch 2011 Feb. 8.0 TT = JDT 2455600.5 MPC
M 51.08069 (2000.0) P Q
n 0.43659307 Peri. 96.22106 +0.79551661 -0.44335116
a 1.7208836 Node 290.76491 +0.20839837 +0.84025017
e 0.3893321 Incl. 26.21381 +0.56896699 +0.31212081
P 2.26 H 20.0 G 0.15 U 3
Residuals in seconds of arc
011222 704 0.4+ 0.1+ 020108 696 0.4- 0.3- 110104 H21 0.7- 0.2-
011222 704 0.3- 0.5+ 020108 291 0.2+ 1.1+ 110104 H21 0.7- 0.3+
011222 704 1.0+ 0.7+ 020108 291 0.3+ 0.3+ 110104 H21 0.2- 0.1-
011222 704 1.7+ 0.7+ 020108 291 0.4- 1.2+ 110104 H36 0.5- 0.4-
011223 704 0.7- 1.0- 020109 704 0.4- 1.0- 110104 H36 0.5- 0.5-
011223 704 0.1- 1.0- 020109 704 0.4- 0.4- 110104 H36 0.3- 0.1-
011223 704 0.4- 0.6- 020109 704 0.1+ 1.3- 110104 H36 0.0 0.2-
011223 704 0.2+ 0.9- 020109 704 0.3+ 1.2- 110104 H36 0.2- 0.6-
011223 704 0.0 0.7- 020213 696 0.5- 1.2- 110104 854 0.2+ 0.3-
011224 461 0.5+ 0.7- 020213 696 0.3- 1.0- 110104 854 0.2- 0.4-
011224 461 0.7- 0.3- 110103 704 0.1- 0.4+ 110104 854 0.1- 0.1-
011225 651 (2.4+ 0.9+) 110103 704 0.6+ 0.8+ 110104 H01 0.2- 0.0
011225 651 0.1- 0.5- 110103 704 0.8+ 0.7- 110104 H01 0.2- 0.0
011225 651 0.1+ 0.7+ 110103 704 1.1+ 0.2- 110104 H01 0.2- 0.0
020108 696 0.5+ 0.0 110103 704 0.4+ 0.4+ 110104 H01 0.3- 0.1+
Ephemeris:
2001 YM4 a,e,i = 1.72, 0.39, 26 q = 1.0509
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2010 12 05 10 09 36.0 +66 25 14 0.3584 1.1770 113.8 50.0 20.0
...
2010 12 20 08 11 57.8 +55 44 22 0.3264 1.2474 138.6 31.5 19.4
...
2010 12 28 07 25 50.4 +46 32 31 0.3304 1.2882 153.8 19.7 19.1
...
2011 01 03 07 00 47.4 +39 05 57 0.3468 1.3198 163.7 12.1 19.0
2011 01 04 06 57 19.9 +37 52 43 0.3508 1.3252 164.9 11.1 19.0
2011 01 05 06 54 03.8 +36 40 22 0.3550 1.3305 165.9 10.4 19.0
...
2011 01 11 06 38 04.0 +29 53 00 0.3875 1.3630 166.3 9.8 19.3
...
2011 01 19 06 24 40.7 +22 24 41 0.4471 1.4069 157.3 15.7 19.8
...
2011 02 03 06 16 02.0 +13 15 51 0.5972 1.4899 139.3 25.6 20.9
Carl W. Hergenrother (C) Copyright 2011 MPC M.P.E.C. 2011-A10
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