MPEC 2007-U84 : 2007 UN12
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Read MPEC 2007-U85
M.P.E.C. 2007-U84 Issued 2007 Oct. 29, 16:38 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
2007 UN12
Observations:
K07U12N* C2007 10 21.37247 02 45 45.64 +24 15 24.2 18.2 V EU084703
K07U12N C2007 10 21.38013 02 45 42.48 +24 14 11.5 17.7 V EU084703
K07U12N C2007 10 21.38780 02 45 39.31 +24 12 57.5 17.7 V EU084703
K07U12N C2007 10 21.43501 02 45 22.82 +24 04 56.7 17.8 V EU084703
K07U12N C2007 10 21.44459 02 45 20.12 +24 03 14.1 17.7 V EU084703
K07U12N C2007 10 21.45420 02 45 17.64 +24 01 30.6 17.6 V EU084703
K07U12N C2007 10 21.98536 02 48 51.65 +22 49 29.6 18.6 R EU084A80
K07U12N C2007 10 21.98682 02 48 51.28 +22 49 21.3 18.5 R EU084A80
K07U12N C2007 10 21.98827 02 48 50.91 +22 49 11.6 18.6 R EU084A80
K07U12N C2007 10 22.08777 02 48 31.15 +22 40 26.1 EU084204
K07U12N C2007 10 22.09197 02 48 30.22 +22 39 54.2 EU084204
K07U12N C2007 10 22.09616 02 48 29.30 +22 39 22.2 17.9 R EU084204
K07U12N C2007 10 22.30332302 49 40.95 +22 22 14.1 18.9 V EU084H55
K07U12N C2007 10 22.30556802 49 40.20 +22 22 00.1 19.0 V EU084H55
K07U12N C2007 10 22.30800402 49 39.37 +22 21 44.6 18.9 V EU084H55
K07U12N C2007 10 22.77861 02 52 26.27 +21 31 01.1 18.5 V EU084A17
K07U12N C2007 10 22.79114 02 52 27.36 +21 30 27.0 18.5 V EU084A17
K07U12N C2007 10 22.80983 02 52 28.24 +21 29 36.0 18.4 V EU084A17
K07U12N C2007 10 22.82230 02 52 28.35 +21 29 02.5 18.3 V EU084A17
K07U12N C2007 10 22.87026 02 52 28.48 +21 27 48.0 18.3 R EU084143
K07U12N C2007 10 22.87559 02 52 27.75 +21 27 32.0 18.5 R EU084143
K07U12N C2007 10 22.88088 02 52 26.99 +21 27 15.4 18.5 R EU084143
K07U12N C2007 10 23.21498 02 53 25.38 +21 07 14.4 EU084291
K07U12N C2007 10 23.21905 02 53 24.49 +21 07 05.0 EU084291
K07U12N C2007 10 23.22468 02 53 23.16 +21 06 50.6 EU084291
K07U12N C2007 10 23.31199 02 52 49.15 +21 01 47.4 18.9 EU084704
K07U12N C2007 10 23.31341 02 52 34.72 +20 59 49.2 19.4 R EU084734
K07U12N C2007 10 23.31589 02 52 33.86 +20 59 38.0 19.0 R EU084734
K07U12N C2007 10 23.31836 02 52 33.06 +20 59 27.6 19.0 R EU084734
K07U12N C2007 10 23.32382 02 52 45.00 +21 00 59.3 19.6 EU084704
K07U12N C2007 10 23.34726 02 52 36.85 +20 59 19.7 19.2 EU084704
K07U12N C2007 10 23.35899 02 52 32.83 +20 58 27.5 19.7 EU084704
K07U12N C2007 10 23.87737 02 54 36.85 +20 17 57.1 18.8 R EU084J95
K07U12N C2007 10 23.89047 02 54 35.74 +20 17 29.0 19.1 R EU084J95
K07U12N C2007 10 23.90374 02 54 34.34 +20 16 59.9 19.2 R EU084J95
K07U12N C2007 10 23.91770 02 54 32.59 +20 16 28.8 18.9 R EU084J95
K07U12N C2007 10 23.93249 02 54 30.44 +20 15 53.0 19.2 R EU084J95
K07U12N 5C2007 10 24.26493 02 55 11.31 +20 02 54.9 18.8 R EU084673
K07U12N 5C2007 10 24.27569 02 55 08.41 +20 02 30.7 EU084673
K07U12N 5C2007 10 24.29259 02 55 03.96 +20 01 55.8 EU084673
K07U12N C2007 10 24.29604 02 54 55.69 +20 02 35.7 18.5 V EU084G96
K07U12N C2007 10 24.29991 02 54 54.46 +20 02 25.4 18.3 V EU084G96
K07U12N 5C2007 10 24.30336 02 55 00.76 +20 01 29.3 EU084673
K07U12N C2007 10 24.30378 02 54 53.28 +20 02 15.2 18.4 V EU084G96
K07U12N C2007 10 24.30765 02 54 52.02 +20 02 04.5 18.5 V EU084G96
K07U12N C2007 10 24.40234 02 54 21.96 +19 56 51.7 18.5 V EU084G96
K07U12N C2007 10 24.40276 02 54 21.85 +19 56 49.6 18.6 V EU084G96
K07U12N C2007 10 24.40317 02 54 21.70 +19 56 48.0 18.3 V EU084G96
K07U12N C2007 10 24.40359 02 54 21.60 +19 56 46.6 18.5 V EU084G96
K07U12N C2007 10 25.31554 02 56 15.97 +19 15 22.5 18.5 V EU084G96
K07U12N C2007 10 25.31608 02 56 15.79 +19 15 20.8 18.5 V EU084G96
K07U12N C2007 10 25.31662 02 56 15.64 +19 15 20.0 19.1 V EU084G96
K07U12N C2007 10 25.31716 02 56 15.46 +19 15 18.5 18.4 V EU084G96
K07U12N C2007 10 25.39639 02 55 52.00 +19 12 00.8 19.4 R EU084651
K07U12N C2007 10 25.40077 02 55 50.92 +19 11 49.2 18.9 R EU084651
Observer details:
143 Gnosca. Observer S. Sposetti. 0.40-m f/4 reflector + CCD.
204 Schiaparelli Observatory. Observer L. Buzzi. 0.60-m f/4.64 reflector
+ CCD.
291 LPL/Spacewatch II. Observer J. V. Scotti. 1.8-m f/2.7 reflector + CCD.
651 Grasslands Observatory, Tucson. Observer J. E. McGaha. 0.62-m f/5.1
reflector + CCD.
673 Table Mountain Observatory, Wrightwood. Observer J. Young. 0.61-m f/16
Cassegrain + CCD.
703 Catalina Sky Survey. Observer R. A. Kowalski. 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. 0.68-m Schmidt + 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.
734 Farpoint Observatory. Observer G. Hug. 0.7-m reflector + CCD.
A17 Guidestar Observatory, Weinheim. Observers M. Emmerich, S. Melchert.
0.36-m f/6 Schmidt-Cassegrain + CCD.
A80 Lindenberg Observatory. Observer A. Knoefel. 0.30-m f/4 reflector + CCD.
G96 Mt. Lemmon Survey. Observer A. Boattini. 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.
0.61-m f/4.0 astrograph + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
Orbital elements:
2007 UN12 Earth MOID = 0.0010 AU
Epoch 2007 Oct. 27.0 TT = JDT 2454400.5 MPC
M 39.71189 (2000.0) P Q
n 0.91027159 Peri. 131.95562 +0.97992831 +0.19933492
a 1.0544404 Node 216.54651 -0.18410425 +0.90016797
e 0.0643337 Incl. 0.23744 -0.07645996 +0.38725083
P 1.08 H 28.6 G 0.15 U 4
Residuals in seconds of arc
071021 703 0.4+ 0.1- 071022 143 0.1- 0.1- 071024 673 (1.7- 1.2-)
071021 703 0.4+ 0.0 071022 143 0.1- 0.0 071024 673 (1.5+ 1.7+)
071021 703 0.7- 0.1+ 071022 143 0.2+ 0.3- 071024 G96 0.1+ 0.1-
071021 703 0.1+ 0.2+ 071023 291 0.5- 0.3- 071024 G96 0.0 0.3-
071021 703 0.1+ 0.1- 071023 291 0.3- 0.3+ 071024 673 0.6+ 0.9+
071021 703 0.5- 0.3+ 071023 291 0.6- 0.1- 071024 G96 0.7+ 0.1-
071021 A80 1.1+ 0.8- 071023 704 (0.9- 1.8+) 071024 G96 0.4+ 0.3-
071021 A80 0.8+ 0.2+ 071023 734 0.9+ 0.2+ 071024 G96 0.2- 0.2+
071021 A80 0.4+ 0.3- 071023 734 0.1- 0.2- 071024 G96 0.1- 0.3-
071022 204 0.4- 0.0 071023 734 0.3- 0.3+ 071024 G96 0.5- 0.3-
071022 204 0.2- 0.0 071023 704 0.7- 0.8+ 071024 G96 0.2- 0.1-
071022 204 0.2- 0.1+ 071023 704 0.4+ 0.5+ 071025 G96 0.0 0.0
071022 H55 0.3- 0.1+ 071023 704 0.6+ 0.9+ 071025 G96 0.3- 0.5-
071022 H55 0.1- 0.3+ 071023 J95 0.1+ 0.3+ 071025 G96 0.1- 0.1-
071022 H55 0.3- 0.2+ 071023 J95 0.1- 0.2- 071025 G96 0.4- 0.4-
071022 A17 0.8+ 0.3- 071023 J95 0.1- 0.3- 071025 651 0.4- 0.6-
071022 A17 0.5+ 0.7- 071023 J95 0.1+ 0.4+ 071025 651 1.0+ 1.3+
071022 A17 0.1+ 0.7- 071023 J95 0.4+ 0.3-
071022 A17 0.0 0.4+ 071024 673 0.2- 0.5+
Ephemeris:
2007 UN12 a,e,i = 1.05, 0.06, 0 q = 0.9866
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2007 10 27 02 57.88 +18 20.6 0.0105 1.004 165.7 14.2 19.5
2007 10 28 02 58.62 +17 53.6 0.0115 1.005 166.7 13.2 19.7
2007 10 29 02 59.19 +17 30.8 0.0126 1.006 167.7 12.2 19.8
2007 10 30 02 59.62 +17 11.0 0.0136 1.006 168.7 11.2 20.0
2007 10 31 02 59.93 +16 53.7 0.0146 1.007 169.7 10.2 20.1
2007 11 01 03 00.15 +16 38.4 0.0156 1.008 170.7 9.2 20.2
2007 11 02 03 00.29 +16 24.8 0.0166 1.009 171.7 8.2 20.3
2007 11 03 03 00.36 +16 12.6 0.0176 1.010 172.7 7.2 20.4
2007 11 04 03 00.38 +16 01.6 0.0187 1.010 173.7 6.2 20.5
2007 11 05 03 00.36 +15 51.6 0.0197 1.011 174.7 5.2 20.5
2007 11 06 03 00.32 +15 42.6 0.0208 1.012 175.7 4.2 20.6
2007 11 07 03 00.24 +15 34.4 0.0219 1.013 176.7 3.3 20.6
2007 11 08 03 00.16 +15 26.9 0.0229 1.014 177.5 2.4 20.7
2007 11 09 03 00.07 +15 20.2 0.0240 1.015 178.1 1.8 20.8
2007 11 10 02 59.98 +15 14.2 0.0251 1.016 178.3 1.7 20.8
2007 11 11 02 59.89 +15 08.8 0.0263 1.016 177.8 2.1 21.0
2007 11 12 02 59.82 +15 03.9 0.0274 1.017 177.1 2.8 21.1
2007 11 13 02 59.77 +14 59.6 0.0285 1.018 176.2 3.7 21.3
2007 11 14 02 59.73 +14 55.9 0.0297 1.019 175.2 4.6 21.4
2007 11 15 02 59.71 +14 52.6 0.0309 1.020 174.3 5.5 21.5
2007 11 16 02 59.73 +14 49.8 0.0321 1.021 173.3 6.5 21.7
2007 11 17 02 59.77 +14 47.4 0.0333 1.022 172.3 7.4 21.8
2007 11 18 02 59.84 +14 45.5 0.0346 1.023 171.4 8.4 21.9
2007 11 19 02 59.94 +14 44.0 0.0358 1.024 170.4 9.3 22.0
2007 11 20 03 00.07 +14 42.8 0.0371 1.025 169.4 10.2 22.2
2007 11 21 03 00.23 +14 42.0 0.0384 1.026 168.5 11.1 22.3
2007 11 22 03 00.42 +14 41.5 0.0397 1.027 167.5 12.0 22.4
2007 11 23 03 00.65 +14 41.3 0.0410 1.028 166.6 12.9 22.5
2007 11 24 03 00.89 +14 41.4 0.0424 1.028 165.6 13.8 22.6
2007 11 25 03 01.17 +14 41.7 0.0438 1.029 164.7 14.7 22.7
2007 11 26 03 01.47 +14 42.4 0.0452 1.030 163.8 15.5 22.8
When referred to the geocenter, the above orbit indicates that a minimum
in the geocentric eccentricity was reached around Sept. 26, when e = 1.146.
Gareth V. Williams (C) Copyright 2007 MPC M.P.E.C. 2007-U84
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