MPEC 2021-Y55 : 2021 UT6
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M.P.E.C. 2021-Y55 Issued 2021 December 26, 14:05 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
2021 UT6
Revision to MPEC 2021-V11
Additional Observations:
K21U06T C2012 02 01.58651710 24 14.483+28 34 01.64 21.16GVEY055F51
K21U06T C2012 02 01.59858510 24 13.367+28 34 06.06 21.44GVEY055F51
K21U06T KC2015 02 18.55391012 40 31.754+02 34 50.95 22.98GVEY055F51
K21U06T C2015 03 24.41580112 03 38.456+05 05 59.65 22.86GVEY055F51
K21U06T C2015 03 24.43027412 03 37.319+05 06 03.41 22.94GVEY055F51
K21U06T C2016 11 06.61936 08 37 08.792+37 20 11.07 22.3 wLEY055F51
K21U06T C2016 11 06.62657 08 37 09.378+37 20 14.79 22.2 wLEY055F51
K21U06T C2016 11 06.63377 08 37 09.982+37 20 18.50 22.1 wLEY055F51
K21U06T C2016 11 13.58334608 46 09.146+38 23 51.41 21.48GVEY055F51
K21U06T C2016 11 13.59433808 46 09.818+38 23 57.83 21.63GVEY055F51
K21U06T C2016 11 13.60537808 46 10.490+38 24 04.06 21.59GVEY055F51
K21U06T C2016 11 24.60372508 54 22.738+40 19 42.09 21.72GVEY055F51
K21U06T C2016 11 24.61768908 54 22.972+40 19 51.85 21.38GVEY055F51
K21U06T C2016 11 24.63082208 54 23.190+40 20 00.87 21.54GVEY055F51
K21U06T C2016 11 24.64395308 54 23.430+40 20 09.99 21.19GVEY055F51
K21U06T C2016 12 11.48645 08 49 59.89 +43 42 17.4 20.9 VqEY055G96
K21U06T C2016 12 11.48981 08 49 59.73 +43 42 19.4 20.9 VqEY055G96
K21U06T C2016 12 11.49316 08 49 59.47 +43 42 23.0 20.8 VqEY055G96
K21U06T C2016 12 11.49652 08 49 59.37 +43 42 25.5 21.2 VqEY055G96
K21U06T C2016 12 11.51804 08 49 57.95 +43 42 39.1 qEY055G96
K21U06T C2016 12 11.52499 08 49 57.60 +43 42 44.8 qEY055G96
K21U06T C2016 12 11.53159 08 49 57.18 +43 42 48.1 20.3 VqEY055G96
K21U06T C2016 12 11.53813 08 49 56.83 +43 42 54.3 20.4 VqEY055G96
K21U06T C2016 12 28.50808708 23 58.503+46 30 16.78 21.47GVEY055F51
K21U06T C2016 12 28.53574608 23 54.910+46 30 27.32 21.30GVEY055F51
K21U06T C2017 01 15.45386907 44 41.409+46 56 07.72 22.55GVEY055F51
K21U06T C2017 01 15.46740707 44 39.646+46 56 04.60 22.37GVEY055F51
K21U06T C2017 01 30.37005207 18 56.009+45 10 10.77 21.54GVEY055F51
K21U06T C2018 04 13.48917814 05 21.929-18 07 57.53 22.97GVEY055F51
K21U06T C2018 04 13.50060614 05 20.975-18 07 55.84 22.50GVEY055F51
K21U06T C2018 04 13.51202114 05 20.027-18 07 54.67 23.62GVEY055F51
K21U06T C2021 11 17.33518222 13 03.514-02 31 05.95 20.19GVEY055F52
K21U06T C2021 11 17.33644122 13 03.768-02 31 02.35 19.60GVEY055F52
K21U06T C2021 11 17.34675922 13 05.911-02 30 33.92 20.53GVEY055F52
K21U06T C2021 11 17.34801822 13 06.159-02 30 30.56 20.82GVEY055F52
K21U06T C2021 11 19.21790422 19 43.027-01 04 48.27 19.78GVEY055F51
K21U06T C2021 11 21.24104922 26 50.129+00 26 15.36 20.63GVEY055F51
K21U06T C2021 11 21.25557722 26 53.094+00 26 54.11 20.39GVEY055F51
K21U06T C2021 12 18.22913400 00 02.944+17 08 39.52 21.00GVEY055F52
K21U06T C2021 12 18.24068400 00 05.233+17 08 59.89 20.54GVEY055F52
K21U06T C2021 12 18.25231600 00 07.556+17 09 20.12 20.63GVEY055F52
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, I. Smith, B. Gibson, T. Goggia, S. Kahale, M. Willman. Measurers
S. Chastel, M. Huber, Y. Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers,
L. Denneau, H. Flewelling, E. Lilly, E. Magnier, C. Waters. 1.8-m
Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, K. Chambers, T. Dukes, T.
Lowe, A. Schultz, I. Smith. Measurers S. Chastel, M. Huber, Y.
Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey. Observer R. G. Matheny. Measurers E. J. Christensen,
D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski, S.
M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly.
1.5-m reflector + 10K CCD.
Orbital elements:
2021 UT6 Earth MOID = 0.1338 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5 Veres
M 34.89326 (2000.0) P Q
n 0.37946957 Peri. 350.04515 +0.99408670 -0.09348032
a 1.8895197 Node 15.64313 +0.10826935 +0.81421440
e 0.4016355 Incl. 11.82460 +0.00833014 +0.57298895
P 2.60 H 19.76 G 0.15 U 0
Residuals in seconds of arc
120201 F51 0.0 0.1+ 211029 246 0.2+ 0.7+ 211112 I52 0.1+ 0.3-
120201 F51 0.1+ 0.0 211029 246 1.7+ 2.5- 211115 I52 0.5- 0.2-
150218 F51 0.2- 0.2- 211029 246 0.4- 0.4+ 211115 I52 0.1- 0.1-
150324 F51 0.1+ 0.0 211030 I52 0.4+ 0.7- 211115 I52 0.3+ 0.2-
150324 F51 0.1+ 0.0 211030 I52 0.3- 0.2- 211115 I52 0.6+ 0.1+
161106 F51 0.1+ 0.0 211030 I52 0.6+ 0.1- 211117 F52 0.1+ 0.0
161106 F51 0.1- 0.1- 211030 I52 0.2- 0.4- 211117 F52 0.0 0.1+
161106 F51 0.1- 0.2- 211030 568 0.0 0.0 211117 F52 0.0 0.1-
161113 F51 0.1- 0.2+ 211030 568 0.0 0.0 211117 F52 0.2- 0.2-
161113 F51 0.0 0.1+ 211030 568 0.0 0.0 211119 F51 0.2- 0.2+
161113 F51 0.0 0.2- 211031 I52 0.0 0.2- 211121 F51 0.0 0.0
161124 F51 0.1+ 0.2- 211031 I52 0.1+ 0.1- 211121 F51 0.0 0.1-
161124 F51 0.1+ 0.0 211031 I52 0.2- 0.3+ 211124 807 0.1+ 0.5-
161124 F51 0.1+ 0.0 211031 I52 0.2- 0.1- 211124 807 0.0 0.1+
161124 F51 0.3+ 0.2+ 211031 595 0.9- 0.3- 211124 807 0.2+ 0.0
161211 G96 0.5- 0.1+ 211031 595 0.0 0.4- 211201 703 (4.5+ 2.9-)
161211 G96 0.0 0.2- 211031 G02 0.6+ 0.4- 211201 703 1.6- 1.3-
161211 G96 0.6- 1.0+ 211031 G02 0.6+ 0.1- 211202 807 (0.5+ 0.7-)
161211 G96 0.5+ 1.1+ 211031 G02 0.2- 0.5- 211202 807 0.1+ 0.1+
161211 G96 0.8- 0.4- 211101 G96 0.2- 0.0 211202 807 0.1- 0.4+
161211 G96 0.1- 0.4+ 211101 G96 0.1+ 0.3+ 211202 I52 (0.8+ 0.2+)
161211 G96 0.3- 0.9- 211101 G96 0.1+ 0.1- 211202 I52 (0.6- 0.8-)
161211 G96 0.1+ 0.8+ 211101 G96 0.3+ 0.1+ 211202 I52 0.0 0.5-
161228 F51 0.0 0.0 211102 G96 0.6- 0.1- 211202 I52 0.4- 0.8+
161228 F51 0.3- 0.4- 211102 G96 0.2+ 0.2+ 211202 G96 0.2+ 0.4+
170115 F51 0.1- 0.0 211102 G96 0.1- 0.1+ 211202 G96 0.1- 0.2+
170115 F51 0.1+ 0.0 211102 G96 0.1- 0.0 211202 G96 0.1+ 0.1+
170130 F51 0.1- 0.1- 211104 807 0.1+ 0.0 211202 G96 0.1- 0.2+
180413 F51 (0.4+ 0.4-) 211104 807 0.1+ 0.1- 211208 I52 0.4- 0.2-
180413 F51 0.1+ 0.0 211104 807 0.5+ 0.2- 211208 I52 0.1+ 0.3-
180413 F51 0.2- 0.0 211109 I52 0.3- 0.3- 211208 I52 0.4+ 0.2+
211029 F52 0.1- 0.0 211109 I52 (1.0- 0.9-) 211218 F52 0.1+ 0.1-
211029 F52 0.0 0.1+ 211109 I52 0.3- 0.2- 211218 F52 0.1+ 0.1+
211029 F52 0.0 0.2+ 211109 I52 0.0 0.3- 211218 F52 0.3+ 0.1-
211029 F52 0.1+ 0.1+ 211112 I52 0.0 0.1+ 211223 291 0.2+ 0.1-
211029 246 0.2- 0.7+ 211112 I52 0.2- 0.2+ 211223 291 0.1+ 0.1+
211029 246 3.4+ 1.2- 211112 I52 0.6+ 0.6- 211223 291 0.0 0.1+
Ephemeris:
2021 UT6 a,e,i = 1.89, 0.40, 12 q = 1.1306
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 11 26 22 43 30.1 +03 52 50 0.5114 1.1880 100.0 54.9 20.7
...
2021 12 11 23 35 22.6 +13 21 38 0.5959 1.2410 100.6 51.3 21.0
...
2021 12 19 00 02 40.0 +17 31 04 0.6520 1.2744 100.4 49.4 21.2
...
2021 12 25 00 22 56.7 +20 14 15 0.6988 1.3013 100.0 48.1 21.4
2021 12 26 00 26 18.5 +20 39 33 0.7070 1.3059 99.9 47.9 21.4
2021 12 27 00 29 40.1 +21 04 19 0.7153 1.3106 99.8 47.7 21.4
...
2022 01 02 00 49 44.4 +23 22 21 0.7673 1.3393 99.1 46.5 21.6
...
2022 01 10 01 16 16.3 +26 00 17 0.8423 1.3793 97.8 44.9 21.8
...
2022 01 25 02 05 08.7 +29 46 53 0.9989 1.4579 94.6 42.3 22.2
A. U. Tomatic (C) Copyright 2021 MPC M.P.E.C. 2021-Y55
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