MPEC 2009-F52 : 1999 EF5
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M.P.E.C. 2009-F52 Issued 2009 Mar. 21, 01:36 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
1999 EF5
Revision to MPEC 1999-F06
Additional Observations:
J99E05F C2009 03 20.32549 13 54 28.21 -14 15 48.3 18.9 EF052704
J99E05F C2009 03 20.34872 13 54 24.18 -14 18 02.3 19.0 EF052704
J99E05F C2009 03 20.36035 13 54 22.13 -14 19 09.5 19.4 EF052704
J99E05F C2009 03 20.37201 13 54 20.14 -14 20 16.3 19.3 EF052704
J99E05F C2009 03 20.96102 13 52 42.56 -15 16 19.4 18.2 V EF052A17
J99E05F C2009 03 20.96688 13 52 41.53 -15 16 53.3 18.4 V EF052A17
J99E05F C2009 03 20.97275 13 52 40.39 -15 17 26.6 18.3 V EF052A17
J99E05F C2009 03 20.99994 13 52 35.61 -15 20 01.9 18.2 C EF052235
J99E05F C2009 03 21.00187 13 52 35.52 -15 20 13.8 EF052J95
J99E05F C2009 03 21.00395 13 52 34.89 -15 20 24.5 18.3 C EF052235
J99E05F C2009 03 21.00421 13 52 34.95 -15 20 27.1 18.5 V EF052611
J99E05F C2009 03 21.00653 13 52 34.70 -15 20 40.3 EF052J95
J99E05F C2009 03 21.00697 13 52 34.45 -15 20 42.1 18.5 V EF052611
J99E05F C2009 03 21.00974 13 52 33.94 -15 20 58.7 18.6 V EF052611
J99E05F C2009 03 21.01092 13 52 33.65 -15 21 04.4 18.5 V EF052595
J99E05F C2009 03 21.01121 13 52 33.86 -15 21 07.3 18.3 R EF052J95
J99E05F C2009 03 21.01250 13 52 33.46 -15 21 14.2 18.7 V EF052611
J99E05F C2009 03 21.02022 13 52 32.01 -15 21 58.1 18.5 V EF052595
Observer details:
235 CAST Observatory, Talmassons. Observer R. Ligustri. 0.35-m f/6 reflector
+ CCD.
595 Farra d'Isonzo. Observers F. Fabris, E. Pettarin, F. Piani. Measurer
E. Pettarin. 0.40-m f/4.5 reflector + CCD.
611 Starkenburg. Observers M. Busch, T. Haeusler. 0.45-m f/4.4 reflector
+ CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Bezpalko, D. Torres,
R. Kracke, G. Spitz, J. Kistler. Measurers J. Stuart, S. Scruggs. 1.0-m
f/2.15 reflector + CCD.
A17 Guidestar Observatory, Weinheim. Observers M. Emmerich, S. Melchert.
0.36-m f/6 Schmidt-Cassegrain + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 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
090320 704 3.98+ 5.49- 090321 595 4.03+ 5.49- MPC 34609 -2.2 day
Orbital elements:
1999 EF5 Earth MOID = 0.2786 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5 MPC
M 27.49785 (2000.0) P Q
n 0.29628847 Peri. 178.58707 -0.99599444 +0.06929274
a 2.2283986 Node 6.28848 -0.08626270 -0.57829359
e 0.4272384 Incl. 31.05953 -0.02353361 -0.81288071
P 3.33 H 19.5 G 0.15 U 2
Residuals in seconds of arc
990315 704 1.4+ 0.3- 990321 104 1.0- 0.0 990406 402 0.3+ 0.2-
990315 704 1.6+ 0.5+ 990321 104 0.3- 0.1+ 990411 422 0.1- 0.1+
990315 704 0.4+ 0.9- 990321 104 0.3- 0.8- 990411 422 0.3+ 0.1-
990315 704 0.3+ 0.2- 990323 704 0.9+ 0.6+ 990415 422 0.6- 0.2-
990315 587 0.3- 0.1- 990323 704 0.1+ 0.3+ 990415 422 0.5- 0.1+
990315 587 0.8- 0.1+ 990323 704 0.4+ 0.2- 990415 422 0.2- 0.4+
990315 587 0.0 0.3+ 990323 704 0.2+ 0.2- 990422 426 0.3- 0.1-
990316 422 0.5+ 0.1- 990323 704 (1.1+ 2.3-) 990422 426 0.7- 0.4+
990316 422 0.7- 0.7- 990324 118 0.1- 0.9- 990422 426 0.3+ 0.2+
990316 422 0.4+ 0.9- 990324 118 0.4- 1.1- 090320 704 (0.5+ 3.5+)
990316 422 0.5- 0.4- 990326 860 2.0- 0.6+ 090320 704 0.6+ 1.8+
990316 422 0.8- 0.7+ 990326 860 1.4- 1.9- 090320 704 0.2+ 0.9+
990317 422 0.8- 0.5- 990326 860 (2.3- 3.9-) 090320 704 0.8+ 0.4+
990317 422 0.3- 0.1- 990327 402 1.0- 0.3- 090320 A17 0.4+ 0.0
990317 422 1.0- 0.5+ 990327 402 0.6- 1.6- 090320 A17 0.4+ 0.3-
990317 422 0.4- 0.2- 990327 402 0.5+ 0.3- 090320 A17 1.2- 0.0
990317 402 0.5- 0.7- 990405 360 0.5+ 0.3+ 090320 235 0.0 0.1-
990317 402 0.3+ 0.1+ 990405 360 0.3+ 0.3+ 090321 J95 0.2+ 0.2-
990317 402 0.3- 0.1- 990405 360 0.1+ 0.2- 090321 235 0.1- 0.3+
990317 402 0.2- 0.0 990406 719 0.4- 0.0 090321 611 0.4+ 0.1-
990318 046 0.5+ 0.5+ 990406 719 0.9+ 0.7+ 090321 J95 0.2+ 0.0
990318 046 0.2+ 1.1+ 990406 422 0.6+ 0.5+ 090321 611 0.3+ 0.7+
990318 046 0.1+ 0.5+ 990406 422 0.5- 1.0- 090321 611 0.0 0.0
990318 046 0.2- 0.4+ 990406 422 0.3+ 0.0 090321 595 0.0 0.3+
990320 658 1.9+ 1.2+ 990406 422 0.6+ 0.1+ 090321 J95 0.1- 0.1-
990320 658 0.7+ 0.3+ 990406 402 0.7- 1.8+ 090321 611 0.1+ 0.3+
990320 658 0.6+ 0.2+ 990406 402 0.4- 0.3- 090321 595 0.2+ 0.1-
Ephemeris:
1999 EF5 a,e,i = 2.23, 0.43, 31 q = 1.2763
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2009 03 20 13 55.34 -13 44.7 0.319 1.277 147.7 24.6 18.7
2009 03 30 13 21.74 -29 32.5 0.313 1.283 151.8 21.6 18.6
2009 04 09 12 37.76 -42 21.4 0.343 1.296 144.4 26.7 18.9
2009 04 19 11 53.33 -50 04.1 0.401 1.317 134.5 33.0 19.5
2009 04 29 11 19.37 -53 51.0 0.474 1.344 126.5 37.1 20.0
2009 05 09 11 00.30 -55 34.7 0.555 1.377 120.5 39.1 20.5
2009 05 19 10 54.66 -56 26.8 0.639 1.415 116.2 39.9 20.9
2009 05 29 10 59.71 -57 00.8 0.725 1.458 112.9 39.9 21.2
2009 06 08 11 13.03 -57 31.4 0.812 1.503 110.2 39.3 21.5
2009 06 18 11 32.82 -58 01.7 0.900 1.552 108.0 38.5 21.8
2009 06 28 11 57.91 -58 30.7 0.990 1.603 106.0 37.6 22.0
Timothy B. Spahr (C) Copyright 2009 MPC M.P.E.C. 2009-F52
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