MPEC 2008-E100: 2004 XN44
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M.P.E.C. 2008-E100 Issued 2008 Mar. 12, 17:22 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 XN44
Additional Observations:
K04X44N C2008 02 02.49199 13 24 31.24 -09 41 32.0 21.2 V EE100G96
K04X44N C2008 02 02.49763 13 24 31.93 -09 41 35.2 21.3 V EE100G96
K04X44N C2008 02 02.50337 13 24 32.68 -09 41 40.1 21.4 V EE100G96
K04X44N C2008 02 02.50906 13 24 33.26 -09 41 42.2 21.4 V EE100G96
K04X44N C2008 02 13.45434 13 47 49.30 -11 32 20.2 20.8 V EE100G96
K04X44N C2008 02 13.45955 13 47 49.99 -11 32 23.5 20.8 V EE100G96
K04X44N C2008 02 13.46466 13 47 50.67 -11 32 26.1 20.3 V EE100G96
K04X44N C2008 02 13.46976 13 47 51.32 -11 32 29.4 20.8 V EE100G96
K04X44N C2008 03 11.38719 15 02 12.57 -15 45 47.6 19.6 EE100704
K04X44N C2008 03 11.39843 15 02 14.88 -15 45 52.9 19.0 EE100704
K04X44N C2008 03 11.40976 15 02 17.21 -15 45 59.5 19.5 EE100704
K04X44N C2008 03 11.42098 15 02 19.44 -15 46 04.0 19.6 EE100704
K04X44N C2008 03 11.43234 15 02 21.80 -15 46 11.2 19.5 EE100704
K04X44N C2008 03 12.32767215 05 33.52 -15 53 39.1 19.8 V EE100H55
K04X44N C2008 03 12.33082115 05 34.17 -15 53 40.8 19.6 V EE100H55
K04X44N C2008 03 12.33416615 05 34.88 -15 53 42.3 19.8 V EE100H55
K04X44N C2008 03 12.48119 15 06 06.26 -15 54 54.6 19.0 V EE100G96
K04X44N C2008 03 12.48801 15 06 07.66 -15 54 57.8 19.2 V EE100G96
K04X44N C2008 03 12.49477 15 06 09.14 -15 55 01.2 18.6 V EE100G96
K04X44N C2008 03 12.50159 15 06 10.54 -15 55 04.6 19.0 V EE100G96
K04X44N C2008 03 12.59780 15 06 32.10 -15 55 30.7 18.9 R EE100474
K04X44N C2008 03 12.59965 15 06 32.61 -15 55 32.5 19.1 R EE100474
Observer details:
474 Mount John Observatory, Lake Tekapo. Observer A. C. Gilmore. Measurer
P. M. Kilmartin. 1.0-m f/7.7 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.
G96 Mt. Lemmon Survey. Observers S. M. Larson, A. R. Gibbs, A. D. Grauer.
Measurers E. C. Beshore, A. Boattini, G. J. Garradd, A. R. Gibbs,
A. D. Grauer, R. E. Hill, R. A. Kowalski, S. M. Larson, R. H. McNaught.
1.5-m reflector + CCD.
H55 Astronomical Research Observatory, Charleston. Observer R. Holmes.
Measurer K. Flanary. 0.81-m f/4.0 astrograph + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
080202 G96 1.06- 0.37+ 080312 474 2.52- 0.61+ MPO122782 +1.4 day
Orbital elements:
2004 XN44 PHA, Earth MOID = 0.0479 AU
Epoch 2008 May 14.0 TT = JDT 2454600.5 MPC
M 357.46788 (2000.0) P Q
n 0.26133977 Peri. 83.01732 -0.14129179 +0.98996753
a 2.4228826 Node 178.85874 -0.92626235 -0.13185686
e 0.5798492 Incl. 2.76520 -0.34939189 -0.05077459
P 3.77 H 18.3 G 0.15 U 1
Residuals in seconds of arc
041213 568 0.1- 0.0 041218 568 0.1+ 0.1+ 050117 568 0.1+ 0.0
041213 568 0.2- 0.1+ 041220 568 0.0 0.2+ 080202 G96 0.3- 0.0
041213 568 0.1- 0.0 041220 568 0.1- 0.2+ 080202 G96 0.0 0.3+
041214 568 0.1- 0.1+ 050115 568 0.0 0.1+ 080202 G96 1.0+ 1.1-
041214 568 0.0 0.0 050115 568 0.2- 0.1+ 080202 G96 0.4- 0.3+
041214 568 0.2- 0.0 050115 568 0.0 0.1- 080213 G96 0.4- 0.1+
041214 568 0.0 0.1- 050115 568 0.2+ 0.2+ 080213 G96 0.3- 0.1-
041214 568 0.2- 0.0 050115 568 0.1+ 0.0 080213 G96 0.1- 0.4+
041214 568 0.2- 0.0 050115 568 0.0 0.1+ 080213 G96 0.4- 0.2+
041214 568 0.0 0.1+ 050115 568 0.2- 0.3+ 080311 704 1.4+ 1.6+
041214 568 0.1- 0.0 050115 568 0.1- 0.1- 080311 704 1.3+ 2.1+
041214 568 0.1- 0.1+ 050117 568 0.0 0.0 080311 704 1.3+ 1.3+
041214 568 0.1- 0.0 050117 568 0.1+ 0.1+ 080311 704 0.2+ 2.5+
041214 568 0.1- 0.1+ 050117 568 0.1+ 0.0 080311 704 0.5+ 1.0+
041215 568 0.1+ 0.1- 050117 568 0.2- 0.0 080312 H55 0.1- 1.0+
041215 568 0.0 0.0 050117 568 0.2- 0.1+ 080312 H55 0.3- 0.9+
041215 568 0.0 0.0 050117 568 0.2- 0.1- 080312 H55 0.3- 1.1+
041216 568 0.0 0.2+ 050117 568 0.2- 0.0 080312 G96 0.0 0.6+
041216 568 0.1- 0.2+ 050117 568 0.1+ 0.1+ 080312 G96 0.5- 0.7+
041216 568 0.0 0.0 050117 568 0.1+ 0.1+ 080312 G96 0.3+ 0.6+
041216 568 0.1+ 0.2+ 050117 568 0.0 0.2+ 080312 G96 0.3- 0.6+
041218 568 0.1- 0.1+ 050117 568 0.1+ 0.0 080312 474 0.3- 1.1+
041218 568 0.0 0.2+ 050117 568 0.0 0.1- 080312 474 1.3+ 0.2+
041218 568 0.2- 0.2+ 050117 568 0.0 0.1-
041218 568 0.2- 0.0 050117 568 0.1- 0.1+
Ephemeris:
2004 XN44 a,e,i = 2.42, 0.58, 3 q = 1.0180
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2008 03 05 14 41.20 -14 49.7 0.604 1.410 122.2 36.6 19.4
2008 03 15 15 15.49 -16 15.0 0.494 1.334 123.8 38.2 18.9
2008 03 25 15 59.39 -17 20.8 0.402 1.263 123.2 41.3 18.4
2008 04 04 16 57.03 -17 40.3 0.329 1.196 119.4 46.7 18.0
2008 04 14 18 10.22 -16 24.7 0.281 1.137 111.7 55.1 17.8
2008 04 24 19 32.63 -12 58.0 0.262 1.087 101.1 65.2 17.9
2008 05 04 20 49.98 -08 05.5 0.271 1.049 91.1 73.9 18.2
2008 05 14 21 52.75 -03 20.3 0.301 1.026 84.3 78.7 18.5
2008 05 24 22 41.02 +00 32.1 0.341 1.018 81.2 79.5 18.8
2008 06 03 23 18.36 +03 31.2 0.385 1.027 80.9 77.3 19.0
2008 06 13 23 47.70 +05 46.6 0.427 1.051 82.8 73.4 19.1
2008 06 23 00 10.90 +07 26.8 0.464 1.090 86.3 68.5 19.2
2008 07 03 00 28.77 +08 35.4 0.494 1.140 91.3 63.0 19.3
2008 07 13 00 41.42 +09 12.6 0.516 1.200 97.7 57.1 19.3
2008 07 23 00 48.78 +09 17.5 0.533 1.267 105.5 50.6 19.3
2008 08 02 00 50.58 +08 47.8 0.545 1.339 114.9 43.4 19.3
2008 08 12 00 46.74 +07 42.0 0.558 1.414 125.8 35.6 19.2
2008 08 22 00 37.84 +06 03.1 0.577 1.491 138.1 27.0 19.2
2008 09 01 00 25.17 +03 59.4 0.607 1.570 151.4 17.9 19.1
2008 09 11 00 10.83 +01 46.6 0.655 1.648 165.3 8.9 19.1
2008 09 21 23 57.21 -00 16.7 0.723 1.727 179.0 0.6 18.9
2008 10 01 23 46.13 -01 56.9 0.813 1.804 168.0 6.6 19.6
2008 10 11 23 38.61 -03 06.8 0.925 1.881 155.9 12.5 20.2
2008 10 21 23 34.85 -03 46.3 1.057 1.957 144.9 17.0 20.8
2008 10 31 23 34.53 -03 59.0 1.206 2.031 134.8 20.3 21.3
2008 11 10 23 37.16 -03 49.2 1.369 2.103 125.4 22.6 21.7
Gareth V. Williams (C) Copyright 2008 MPC M.P.E.C. 2008-E100
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