MPEC 2021-B128 : 2007 UN12
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M.P.E.C. 2021-B128 Issued 2021 January 25, 01:30 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Division F 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 https://www.minorplanetcenter.net/ ISSN 1523-6714
2007 UN12
Revision to MPEC 2007-U84
Additional Observations:
K07U12N C2021 01 12.45763308 22 18.204+16 48 33.84 24.57GVEB128T14
K07U12N C2021 01 12.46370108 22 16.884+16 48 37.52 24.72GVEB128T14
K07U12N C2021 01 12.46980308 22 15.542+16 48 41.23 24.92GVEB128T14
K07U12N C2021 01 12.48251408 22 12.779+16 48 48.79 24.86GVEB128T14
K07U12N C2021 01 12.48858608 22 11.447+16 48 52.45 24.83GVEB128T14
K07U12N C2021 01 12.49465908 22 10.130+16 48 55.94 24.64GVEB128T14
K07U12N C2021 01 13.43907808 19 20.714+16 58 27.97 24.82GVEB128T14
K07U12N C2021 01 13.44514808 19 19.383+16 58 31.77 24.83GVEB128T14
K07U12N C2021 01 13.45122108 19 18.050+16 58 35.52 24.64GVEB128T14
Observer details:
T14 Mauna Kea-UH/Tholen NEO Follow-Up (CFHT). Observers L. Wells, C. Crowder.
Measurer D. J. Tholen. 3.6-m f/4.1 reflector + MegaCam.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
210112 T14 0.10+ 0.02+ 210113 T14 0.10+ 0.02+ MPO130304 +0.06 days
Orbital elements:
2007 UN12 Earth MOID = 0.0007 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 90.53175 (2000.0) P Q
n 0.91699062 Peri. 137.94195 +0.99140652 +0.13079656
a 1.0492834 Node 214.54263 -0.12108550 +0.91080344
e 0.0589321 Incl. 0.23426 -0.04951176 +0.39157293
P 1.07 H 28.7 G 0.15 U 1
Residuals in seconds of arc
071021 703 1.0+ 0.6+ 071024 G96 0.5+ 0.0 071103 G96 0.2- 0.4-
071021 703 1.1+ 0.7+ 071024 673 1.1+ 1.2+ 071103 G96 0.3+ 0.2-
071021 703 0.0 0.8+ 071024 G96 1.2+ 0.1+ 071103 G96 0.1+ 0.1-
071021 703 1.0+ 1.0+ 071024 G96 0.9+ 0.1- 071104 G96 0.1- 0.1-
071021 703 1.1+ 0.6+ 071024 G96 0.6+ 0.4+ 071104 G96 0.0 0.0
071021 703 0.5+ 1.1+ 071024 G96 0.7+ 0.1- 071104 G96 0.1- 0.1-
071021 A80 1.7+ 0.1- 071024 G96 0.3+ 0.1- 071104 G96 0.2- 0.3-
071021 A80 1.4+ 0.9+ 071024 G96 0.6+ 0.1+ 071104 291 0.3- 0.1+
071021 A80 1.1+ 0.5+ 071025 G96 0.5+ 0.2+ 071104 291 0.6- 0.3+
071022 204 0.5+ 0.6+ 071025 G96 0.3+ 0.3- 071104 291 0.2- 0.5+
071022 204 0.7+ 0.7+ 071025 G96 0.4+ 0.1+ 071105 291 0.7- 0.3+
071022 204 0.7+ 0.8+ 071025 G96 0.1+ 0.2- 071105 291 0.6- 0.2+
071022 H55 0.5+ 0.6+ 071025 651 0.2+ 0.4- 071105 291 0.1+ 0.2+
071022 H55 0.6+ 0.8+ 071025 651 1.7+ 1.5+ 071105 G96 0.2+ 0.5-
071022 H55 0.5+ 0.7+ 071028 H55 1.1- 0.8- 071105 G96 0.1+ 0.4-
071022 A17 1.2+ 0.4+ 071028 H55 0.7+ 0.1- 071105 G96 0.2+ 0.3-
071022 A17 0.8+ 0.0 071028 H55 0.0 1.4+ 071105 291 0.0 0.4+
071022 A17 0.4+ 0.1- 071029 H55 0.3+ 0.0 071105 291 0.7- 0.5-
071022 A17 0.4+ 1.0+ 071029 H55 0.1- 0.0 071105 291 0.3+ 0.4+
071022 143 0.2+ 0.5+ 071029 H55 0.3+ 0.9+ 071106 291 0.0 0.4+
071022 143 0.3+ 0.6+ 071029 J95 0.2+ 0.1- 071106 291 0.5- 0.3+
071022 143 0.6+ 0.2+ 071029 J95 0.4+ 0.6- 071106 291 0.5+ 0.9+
071022 204 0.5+ 0.7+ 071030 G96 0.3+ 0.0 071107 291 0.3- 0.2+
071022 204 0.5+ 0.7+ 071030 G96 0.4+ 0.2- 071107 291 0.4- 0.5+
071022 204 0.5+ 0.7+ 071030 G96 0.2+ 0.4- 071107 291 0.3- 0.4+
071023 291 0.2- 0.1+ 071031 J95 0.2- 1.0- 071108 291 0.9- 0.7+
071023 291 0.0 0.6+ 071031 J95 1.0+ 0.0 071108 291 0.3- 0.5+
071023 291 0.2- 0.2+ 071031 J95 0.5+ 0.2+ 071108 291 1.0- 0.6+
071023 704 0.3- 2.0+ 071031 691 0.1+ 0.2+ 071108 291 0.4- 0.2+
071023 734 1.6+ 0.5+ 071031 691 0.6- 0.2+ 071108 291 1.5- 0.4+
071023 734 0.6+ 0.1+ 071031 691 0.0 0.6+ 071109 291 0.9- 0.4+
071023 734 0.4+ 0.6+ 071031 291 0.9+ 0.3+ 071109 291 0.5- 0.2+
071023 704 0.0 1.0+ 071031 291 0.7+ 0.5- 071115 G96 0.1+ 0.1+
071023 704 1.1+ 0.7+ 071031 291 0.4- 0.2- 071115 G96 0.7- 0.3+
071023 704 1.3+ 1.1+ 071101 291 0.4- 0.2+ 071115 G96 0.2- 0.5+
071023 J95 0.5+ 0.8+ 071101 291 0.6- 0.1+ 210112 T14 0.1- 0.0
071023 J95 0.4+ 0.3+ 071101 291 0.6- 0.1- 210112 T14 0.0 0.0
071023 J95 0.4+ 0.2+ 071102 291 0.7- 0.3+ 210112 T14 0.1- 0.0
071023 J95 0.6+ 0.8+ 071102 291 0.8- 0.0 210112 T14 0.1+ 0.0
071023 J95 0.9+ 0.1+ 071102 291 0.5- 0.1+ 210112 T14 0.0 0.0
071024 673 0.2+ 0.8+ 071103 691 0.3- 0.3+ 210112 T14 0.1+ 0.0
071024 673 1.3- 0.9- 071103 691 0.7- 0.3- 210113 T14 0.0 0.0
071024 673 2.0+ 1.9+ 071103 691 0.1- 0.3+ 210113 T14 0.0 0.0
071024 G96 0.6+ 0.1+ 071103 G96 0.2- 0.1+ 210113 T14 0.0 0.0
Ephemeris:
2007 UN12 a,e,i = 1.05, 0.06, 0 q = 0.9874
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 12 26 09 04 27.9 +14 26 19 0.1003 1.0622 140.0 36.5 25.3
...
2021 01 10 08 29 36.1 +16 24 02 0.09604 1.0760 163.8 14.8 24.6
...
2021 01 18 08 05 31.1 +17 43 51 0.09897 1.0827 176.8 2.9 24.1
...
2021 01 24 07 48 28.3 +18 38 02 0.1041 1.0873 171.3 7.8 24.5
2021 01 25 07 45 52.0 +18 46 11 0.1052 1.0881 169.8 9.3 24.6
2021 01 26 07 43 20.8 +18 54 03 0.1063 1.0888 168.2 10.7 24.7
...
2021 02 01 07 30 14.3 +19 35 11 0.1145 1.0930 159.0 18.8 25.1
...
2021 02 09 07 18 44.1 +20 14 43 0.1285 1.0980 148.2 28.2 25.7
...
2021 02 24 07 15 41.1 +20 50 36 0.1621 1.1052 132.3 41.5 26.6
A. U. Tomatic (C) Copyright 2021 MPC M.P.E.C. 2021-B128
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