MPEC 2021-C228 : 2021 CU5
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M.P.E.C. 2021-C228 Issued 2021 February 12, 03:05 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 CU5
Observations:
K21C05U* C2021 02 11.22456008 45 43.07 +44 55 23.3 17.98RUEC228I41
K21C05U C2021 02 11.30343808 48 15.44 +43 30 24.8 18.51gUEC228I41
K21C05U C2021 02 11.46745408 52 58.03 +40 40 46.1 18.08RUEC228I41
K21C05U C2021 02 11.46791708 52 58.76 +40 40 19.4 18.05RUEC228I41
K21C05U C2021 02 11.46826408 52 59.30 +40 39 59.2 18.05RUEC228I41
K21C05U KC2021 02 11.75143909 01 10.13 +36 21 04.3 18.1 GVEC228595
K21C05U KC2021 02 11.76085509 01 21.85 +36 13 19.4 17.9 GVEC228595
K21C05U KC2021 02 11.76555509 01 27.66 +36 09 29.8 18.0 GVEC228595
K21C05U KC2021 02 11.76674809 01 30.08 +36 08 17.2 18.1 GVEC228587
K21C05U KC2021 02 11.76703609 01 30.43 +36 08 02.9 18.3 GVEC228587
K21C05U KC2021 02 11.76899109 01 32.84 +36 06 27.5 18.5 GVEC228587
K21C05U KC2021 02 11.77300309 01 39.99 +36 04 17.8 19.8 GVEC228L34
K21C05U KC2021 02 11.78162009 01 50.24 +35 57 18.3 18.0 GVEC228L34
K21C05U KC2021 02 11.83729709 02 53.28 +35 12 45.0 19.2 GVEC228L34
K21C05U KC2021 02 11.84567909 03 02.23 +35 06 08.2 18.8 GVEC228L34
K21C05U KC2021 02 11.85806209 03 15.87 +34 54 02.9 18.5 GVEC228Z99
K21C05U KC2021 02 11.86009409 03 18.11 +34 52 27.9 18.5 GVEC228Z99
K21C05U KC2021 02 11.86215709 03 20.40 +34 50 50.8 18.1 GVEC228Z99
K21C05U KC2021 02 11.86422109 03 22.67 +34 49 13.4 18.2 GVEC228Z99
K21C05U bC2021 02 11.88734609 03 44.39 +34 32 32.9 17.7 GVEC228L01
K21C05U IC2021 02 11.88794509 03 45.03 +34 32 05.2 17.6 GVEC228L01
K21C05U bC2021 02 11.88973709 03 46.88 +34 30 41.5 17.7 GVEC228L01
K21C05U bC2021 02 11.89093009 03 48.07 +34 29 46.4 17.8 GVEC228L01
K21C05U bC2021 02 11.89212309 03 49.32 +34 28 50.7 17.9 GVEC228L01
K21C05U bC2021 02 11.89331409 03 50.55 +34 27 55.1 17.7 GVEC228L01
K21C05U 1C2021 02 11.91496 09 04 12.62 +34 10 27.0 18.8 VVEC228033
K21C05U 1C2021 02 11.91530 09 04 12.96 +34 10 11.3 18.9 VVEC228033
K21C05U 1C2021 02 11.91565 09 04 13.32 +34 09 54.8 18.9 VVEC228033
K21C05U KC2021 02 11.91726 09 04 21.19 +34 09 24.2 18.2 GVEC228958
K21C05U KC2021 02 11.92199 09 04 25.87 +34 05 47.3 18.0 GVEC228958
K21C05U KC2021 02 11.93354 09 04 30.27 +33 56 10.9 18.3 GVEC228C43
K21C05U KC2021 02 11.93506 09 04 31.80 +33 55 01.2 18.4 GVEC228C43
K21C05U KC2021 02 11.93658 09 04 33.32 +33 53 51.8 18.2 GVEC228C43
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, C.
Hoegner, B. Stecklum. Measurer B. Stecklum. 1.34-m f/3 Schmidt + CCD.
587 Sormano. Observers E. Colzani, G. Ventre. Measurer P. Sicoli. 0.5-m
f/6.8 reflector + CCD.
595 Farra d'Isonzo. Observers G. Panterotto, E. Pettarin. Measurer E.
Pettarin. 0.40-m f/5.15 reflector + CCD.
958 Observatoire de Dax. Observer P. Dupouy. 0.32-m f/4.1 Schmidt-
Cassegrain.
C43 Hoyerswerda. Observer P. Lindner. 0.30-m f/6.3 Schmidt-Cassegrain + CCD.
I41 Palomar Mountain--ZTF. Observers B. T. Bolin, V. Bhalerao, C. M.
Copperwheat, K. P. Deshmukh, C.-Y. Hsu, Z.-Y. Lin, J. Purdum, S. Royle, K.
Sharma, C. Zhai, Z. T. F. Collaboration. Measurers B. T. Bolin, D. A.
Duev, H.-W. Lin, F. J. Masci, Q.-Z. Ye. 1.2-m f/2.4 Schmidt.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
L34 Galhassin Robotic Telescope, Isnello. Observer A. Nastasi. 0.40-m
reflector + CCD.
Z99 Clixby Observatory, Cleethorpes. Observer A. Mickleburgh. 0.36-m f/8
Schmidt-Cassegrain + CCD.
Orbital elements:
2021 CU5 Earth MOID = 0.0108 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 355.55010 (2000.0) P Q
n 0.55310765 Peri. 108.78572 +0.26501558 -0.96210492
a 1.4698159 Node 325.64026 +0.83630936 +0.26248104
e 0.4503624 Incl. 6.53102 +0.47995145 +0.07387713
P 1.78 H 26.0 G 0.15 U 6
Residuals in seconds of arc
210211 I41 0.2- 0.2+ 210211 L34 0.6+ 0.1- 210211 L01 0.2- 0.3+
210211 I41 0.6+ 0.5- 210211 L34 0.1+ 0.3- 210211 L01 0.2+ 0.2+
210211 I41 0.4+ 0.7- 210211 L34 0.8+ 0.1- 210211 L01 0.3+ 0.0
210211 I41 0.0 0.5+ 210211 L34 0.1+ 0.5+ 210211 033 0.1+ 0.2-
210211 I41 0.3- 1.1+ 210211 Z99 0.0 0.8- 210211 033 0.0 0.2-
210211 595 0.5- 0.9+ 210211 Z99 0.1- 0.2- 210211 033 0.1+ 0.6-
210211 595 1.3- 0.4- 210211 Z99 0.1+ 0.4- 210211 958 0.5- 0.4+
210211 595 1.3- 0.7+ 210211 Z99 0.1+ 0.9- 210211 958 0.9- 0.1+
210211 587 0.0 0.3- 210211 L01 0.3- 0.3- 210211 C43 0.6+ 0.7+
210211 587 0.1- 0.5- 210211 L01 0.0 0.0 210211 C43 0.8+ 0.6+
210211 587 0.2- 0.3- 210211 L01 0.1+ 0.2- 210211 C43 1.0+ 0.8+
Ephemeris:
2021 CU5 a,e,i = 1.47, 0.45, 7 q = 0.8079
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 13 21 44 55.8 +05 51 18 0.2013 0.8432 41.4 129.5 27.8
...
2021 01 28 21 56 12.6 +12 26 03 0.09036 0.9130 35.8 140.9 27.6
...
2021 02 05 22 11 05.5 +25 19 40 0.03565 0.9604 43.6 134.9 24.9
...
2021 02 11 08 35 30.9 +49 16 01 0.01518 0.9991 142.6 36.9 18.4
2021 02 12 09 05 41.3 +33 09 06 0.01985 1.0057 158.9 20.7 18.5
2021 02 13 09 18 25.3 +23 30 38 0.02559 1.0124 168.0 11.7 18.8
...
2021 02 19 09 38 14.5 +05 36 11 0.06568 1.0533 170.4 9.0 20.8
...
2021 02 27 09 44 16.1 +00 50 52 0.1234 1.1095 164.2 14.1 22.5
...
2021 03 14 09 51 38.5 -01 07 21 0.2428 1.2167 153.8 21.2 24.4
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-C228
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