MPEC 2009-K56 : 2004 RK9
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M.P.E.C. 2009-K56 Issued 2009 May 27, 19:31 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
2004 RK9
Revision to MPEC 2004-R35
Additional Observations:
K04R09K C2009 05 25.61873 15 33 26.47 -71 51 09.5 19.0 R EK056D21
K04R09K C2009 05 25.62238 15 33 27.59 -71 51 29.4 18.7 R EK056D21
K04R09K C2009 05 25.62604 15 33 28.71 -71 51 47.3 18.8 R EK056D21
K04R09K C2009 05 27.67999 15 48 55.94 -74 46 01.5 19.6 R EK056D21
K04R09K C2009 05 27.68538 15 48 58.37 -74 46 28.8 19.8 R EK056D21
K04R09K C2009 05 27.76370 15 49 35.92 -74 52 55.7 19.6 R EK056D21
K04R09K C2009 05 27.76910 15 49 39.06 -74 53 22.0 19.6 R EK056D21
Observer details:
D21 Shenton Park. Observers P. Luckas, P. R. Holvorcem, M. Schwartz.
Measurer P. R. Holvorcem. 0.35-m f/9.4 Schmidt-Cassegrain + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
090525 D21 0.18+ 0.09- 090527 D21 0.19+ 0.08- MPO 70397 -0.029 day
Orbital elements:
2004 RK9 Earth MOID = 0.1103 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5 MPC
M 356.50364 (2000.0) P Q
n 0.39546213 Peri. 283.97424 +0.15731555 +0.98750403
a 1.8382283 Node 355.04822 -0.85904148 +0.13216301
e 0.4260957 Incl. 6.22534 -0.48713403 +0.08584133
P 2.49 H 21.4 G 0.15 U 2
Residuals in seconds of arc
040907 704 0.2- 0.1- 040908 673 0.1+ 0.4+ 040917 246 0.6- 0.9+
040907 704 0.7+ 0.1- 040908 673 0.1+ 0.3+ 040917 246 0.1+ 1.2-
040907 704 0.2- 0.4+ 040908 704 0.6- 0.6- 040917 246 0.3+ 1.0+
040907 704 0.5+ 0.5+ 040908 673 0.4- 1.2+ 041005 291 0.0 0.6-
040907 704 0.3+ 0.3- 040908 704 0.2- 0.3+ 041005 291 0.9- 0.3-
040907 246 0.1+ 0.2+ 040908 734 0.2+ 0.1- 041005 291 0.6+ 1.2-
040907 246 0.2- 0.5+ 040908 448 0.0 0.1+ 041008 696 1.0- 0.3-
040907 246 1.4- 0.1+ 040908 734 0.1+ 0.2- 041008 696 0.2- 0.2+
040907 246 0.3+ 0.4+ 040908 704 0.0 0.4- 041013 291 0.2+ 0.3-
040907 246 0.1- 0.8+ 040908 448 0.3- 0.1- 041013 291 0.6- 0.3-
040907 615 0.6- 0.3+ 040908 734 0.3- 0.1+ 041013 291 0.6+ 0.8+
040907 615 0.2+ 0.3+ 040908 448 0.3- 0.7- 041014 291 0.0 1.5+
040907 615 0.6- 0.5+ 040911 448 0.6+ 0.4- 041014 291 0.1- 0.1-
040907 615 0.5- 0.5+ 040911 448 0.6+ 0.2- 041014 291 0.3+ 0.5+
040908 J95 0.2+ 0.2+ 040911 448 0.1+ 0.9- 090525 D21 0.5- 0.4+
040908 J95 0.3+ 0.9- 040913 246 0.0 0.4- 090525 D21 0.4- 0.7-
040908 J95 0.0 0.3+ 040913 246 0.1- 0.5+ 090525 D21 0.3- 0.2+
040908 649 0.1- 1.1- 040913 246 0.2- 0.8+ 090527 D21 0.8+ 0.4+
040908 649 0.3+ 0.3- 040913 246 0.2- 0.6+ 090527 D21 0.3+ 0.1+
040908 649 0.6- 0.0 040913 246 0.2- 1.0+ 090527 D21 0.8- 0.1-
040908 649 0.5+ 0.7- 040917 246 0.6+ 1.3- 090527 D21 1.0+ 0.2-
040908 704 0.1+ 0.1+ 040917 246 1.0+ 1.2-
040908 673 0.1- 0.9+ 040917 246 0.3- 0.4+
Ephemeris:
2004 RK9 a,e,i = 1.84, 0.43, 6 q = 1.0550
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2009 05 19 15 08.88 -62 44.2 0.162 1.135 136.6 37.8 19.2
2009 05 29 16 03.04 -76 35.9 0.141 1.100 124.9 49.0 19.2
2009 06 08 22 24.13 -82 05.1 0.131 1.075 114.0 59.6 19.3
2009 06 18 00 47.91 -68 05.1 0.130 1.059 106.1 67.2 19.5
2009 06 28 01 09.32 -53 45.8 0.136 1.055 102.7 70.0 19.6
2009 07 08 01 12.81 -41 32.2 0.148 1.062 104.0 68.3 19.8
2009 07 18 01 09.53 -31 36.1 0.162 1.080 109.0 62.9 19.8
2009 07 28 01 01.00 -23 41.1 0.177 1.108 117.1 54.7 19.9
2009 08 07 00 47.63 -17 22.4 0.195 1.144 127.6 44.6 19.9
2009 08 17 00 30.15 -12 24.2 0.218 1.187 140.0 33.3 19.9
2009 08 27 00 10.20 -08 35.1 0.247 1.237 153.4 21.4 19.9
2009 09 06 23 50.78 -05 44.3 0.288 1.290 167.1 10.1 19.9
2009 09 16 23 34.57 -03 41.0 0.341 1.346 179.0 0.7 19.8
2009 09 26 23 23.20 -02 11.1 0.408 1.404 167.7 8.8 20.8
2009 10 06 23 17.17 -01 00.6 0.491 1.464 156.8 15.6 21.5
Timothy B. Spahr (C) Copyright 2009 MPC M.P.E.C. 2009-K56
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