MPEC 2009-S109: 2008 YR27
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M.P.E.C. 2009-S109 Issued 2009 Sept. 27, 12:26 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 http://www.cfa.harvard.edu/iau/mpc.html ISSN 1523-6714
2008 YR27
Revision to MPEC 2008-Y68
Additional Observations:
K08Y27R C2009 09 25.35289 02 08 48.67 -02 14 04.6 21.1 R ES109926
K08Y27R C2009 09 25.35769 02 08 48.22 -02 14 07.1 20.8 R ES109926
K08Y27R C2009 09 25.36251 02 08 47.70 -02 14 10.3 21.1 R ES109926
K08Y27R C2009 09 27.36324 02 05 19.51 -02 34 01.1 21.0 R ES109926
K08Y27R C2009 09 27.36804 02 05 19.00 -02 34 03.7 20.8 R ES109926
K08Y27R C2009 09 27.37285 02 05 18.48 -02 34 06.9 20.9 R ES109926
Observer details:
926 Tenagra II Observatory. Observers P. R. Holvorcem, M. Schwartz. Measurer
P. R. Holvorcem. 0.81-m f/7 Ritchey-Chretien + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
090925 926 0.1- 0.5+ 090927 926 0.6+ 1.1+ MPO156154 +0.00008 day
Orbital elements:
2008 YR27 Earth MOID = 0.1228 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5 MPC
M 13.33395 (2000.0) P Q
n 0.29080049 Peri. 149.92640 -0.47716175 +0.86695272
a 2.2563474 Node 91.23271 -0.83226901 -0.39320302
e 0.7512585 Incl. 8.27600 -0.28221440 -0.30624232
P 3.39 H 18.2 G 0.15 U 3
Residuals in seconds of arc
081207 G96 0.2- 0.4+ 081230 854 0.9+ 0.4+ 090125 704 0.2+ 0.3+
081207 G96 0.1- 0.0 081230 854 0.7+ 0.1+ 090125 448 0.0 0.1-
081207 G96 0.0 0.2- 081230 854 0.9+ 1.0+ 090125 A17 0.1+ 0.3+
081207 G96 0.5- 0.3- 081230 682 0.3- 0.4+ 090125 A17 0.2+ 0.2-
081229 G96 0.6+ 0.0 081230 H01 0.1+ 0.1+ 090125 A17 0.0 0.2-
081229 G96 0.1+ 0.1- 081230 H01 0.0 0.2+ 090128 H06 0.9- 0.5+
081229 G96 0.3+ 0.2- 081230 H01 0.0 0.1+ 090128 H06 0.8- 0.0
081229 G96 0.1- 0.0 081230 H01 0.1+ 0.1+ 090130 204 0.3+ 0.3-
081229 G96 0.0 0.1- 081230 104 0.4+ 0.3+ 090130 204 0.0 0.5-
081229 G96 0.5+ 0.0 081230 104 0.6- 0.4+ 090130 204 0.1- 0.3-
081229 G96 0.5+ 0.2- 081230 104 0.8+ 1.1+ 090131 704 0.5- 0.1-
081229 G96 0.0 0.1- 081231 704 0.3- 1.0+ 090131 704 1.2- 2.1-
081229 H01 0.1+ 0.1+ 081231 704 0.1+ 0.4+ 090131 704 0.0 0.8-
081229 H01 0.1+ 0.1+ 081231 704 1.2+ 0.8+ 090131 704 0.5+ 0.1+
081229 H01 0.0 0.0 081231 704 0.6+ 0.4+ 090202 704 0.3+ 0.2+
081229 H01 0.2+ 0.1+ 090101 691 0.7- 0.4- 090202 704 0.0 0.2-
081229 291 0.4- 0.2+ 090101 691 0.7- 0.2+ 090202 704 0.5+ 0.1-
081229 H36 0.2+ 0.9- 090101 691 0.5- 0.2- 090202 704 0.2- 0.4-
081229 291 0.3- 0.3+ 090104 448 0.4+ 0.0 090202 704 0.2+ 0.8-
081229 291 0.4- 0.3+ 090104 448 0.0 0.1- 090217 H55 0.2+ 0.2+
081229 H36 0.1+ 0.4+ 090104 448 0.0 0.4- 090217 H55 0.1- 0.4+
081229 H36 1.9+ 0.5- 090115 448 0.0 0.2- 090217 H55 0.5- 0.8+
081229 A17 0.7- 0.5+ 090115 448 0.3+ 0.2- 090217 H45 1.5+ 0.1-
081229 A17 0.9+ 0.3- 090115 448 0.1+ 0.0 090217 H45 0.1+ 0.2-
081229 A17 0.1- 0.4+ 090116 704 0.0 0.2+ 090217 H45 0.2+ 0.0
081229 A13 0.0 0.5- 090116 704 0.1+ 0.9- 090217 H45 0.2+ 0.2+
081229 A13 0.1- 0.0 090116 704 1.0+ 0.7- 090217 H45 0.5+ 0.0
081230 J95 0.2- 0.2- 090116 704 1.0+ 0.1+ 090315 H55 0.1- 0.5+
081230 J95 0.3+ 0.2- 090116 704 0.7- 0.8+ 090315 H55 0.1- 0.2+
081230 595 0.3+ 0.6+ 090116 A78 0.0 0.1- 090315 H55 0.1- 0.0
081230 595 0.5+ 0.2- 090116 A78 0.3- 0.3- 090328 G96 0.1- 0.4+
081230 J95 0.3- 0.3- 090116 A78 0.5- 0.2- 090328 G96 0.1+ 0.2+
081230 595 0.6+ 0.0 090116 A78 0.4- 0.2- 090328 G96 0.3+ 0.3+
081230 J95 0.2+ 0.5- 090125 H55 0.1+ 0.4+ 090328 G96 0.5- 0.1+
081230 H55 0.2+ 0.1+ 090125 H55 0.2+ 0.2+ 090925 926 0.6- 0.3-
081230 H55 0.1- 0.1+ 090125 H55 0.0 0.1+ 090925 926 0.3+ 0.1+
081230 H55 0.1- 0.1+ 090125 704 0.0 0.6+ 090925 926 0.1+ 0.2-
081230 G96 0.2- 0.0 090125 704 0.2+ 0.6+ 090927 926 0.0 0.4+
081230 G96 0.4- 0.0 090125 704 0.1+ 0.7+ 090927 926 0.1+ 0.6+
081230 G96 0.3+ 0.1- 090125 448 0.1- 0.1- 090927 926 0.1+ 0.3+
081230 G96 0.4+ 0.2+ 090125 704 0.3- 0.3+
081230 682 0.2- 0.6+ 090125 448 0.0 0.0
Ephemeris:
2008 YR27 a,e,i = 2.26, 0.75, 8 q = 0.5612
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2009 09 26 02 07.70 -02 20.5 1.187 2.118 150.5 13.5 21.0
2009 10 06 01 49.98 -03 52.8 1.235 2.207 161.9 8.1 20.9
2009 10 16 01 32.65 -05 04.3 1.314 2.294 165.9 6.1 21.1
2009 10 26 01 17.39 -05 49.1 1.423 2.377 158.8 8.7 21.4
2009 11 05 01 05.29 -06 06.8 1.559 2.457 147.9 12.4 21.9
Timothy B. Spahr (C) Copyright 2009 MPC M.P.E.C. 2009-S109
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