MPEC 2021-J03 : 2018 KU1
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M.P.E.C. 2021-J03 Issued 2021 May 1, 14:02 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
2018 KU1
Revision to MPEC 2018-K64
Additional Observations:
K18K01U ZC2009 06 02.27498418 01 28.987+36 42 49.15 21.1 GVEJ003G96
K18K01U C2012 05 07.51263718 28 18.846+32 28 39.55 21.87GVEJ003F51
K18K01U C2012 06 06.40536216 23 08.246+39 19 27.11 21.60GVEJ003F51
K18K01U C2012 06 06.41649916 23 05.306+39 19 20.44 21.96GVEJ003F51
K18K01U KC2021 04 30.12934408 14 10.58 +70 55 10.1 20.58GVEJ003I52
K18K01U KC2021 04 30.13144408 14 14.03 +70 55 07.9 20.54GVEJ003I52
K18K01U KC2021 04 30.13354508 14 17.29 +70 55 04.7 20.55GVEJ003I52
K18K01U KC2021 05 01.14412208 40 26.10 +70 28 26.1 21.77GVEJ003I52
K18K01U KC2021 05 01.14625108 40 29.21 +70 28 21.8 20.72GVEJ003I52
K18K01U KC2021 05 01.14837808 40 32.38 +70 28 17.3 21.15GVEJ003I52
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, 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 A. Boattini. Measurers M. Micheli, B. Gray.
1.5-m reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer K. W. Wierzchos.
Measurers E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D.
Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A.
Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.0-m
reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
090602 G96 0.22+ 0.06+ 210501 I52 0.10+ 0.10+ MPO457152 -0.06 days
Orbital elements:
2018 KU1 Earth MOID = 0.2039 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 265.53036 (2000.0) P Q
n 1.30077703 Peri. 271.80607 +0.25862151 -0.96200154
a 0.8311272 Node 162.43454 +0.96074274 +0.24673493
e 0.5296089 Incl. 16.86713 +0.10044055 +0.11693978
P 0.76 H 21.0 G 0.15 U 4
Residuals in seconds of arc
090602 G96 0.1+ 0.1- 180520 033 0.1+ 0.1- 180524 I52 0.5- 0.1+
120507 F51 0.1+ 0.0 180520 033 0.0 0.1- 180524 I52 0.2- 0.1-
120606 F51 0.3- 0.0 180520 033 0.3+ 0.0 180524 I52 0.5- 0.3+
120606 F51 0.2+ 0.1- 180520 I52 0.3- 0.1+ 180525 I52 0.4+ 0.1+
180519 G96 0.0 0.2- 180520 I52 0.5- 0.3- 180525 I52 0.0 0.2-
180519 G96 0.1+ 0.3- 180520 L01 0.1+ 0.1+ 180525 I52 0.3- 0.1-
180519 G96 0.4- 0.1- 180520 L01 0.4+ 0.4+ 180602 I52 0.4- 0.1-
180519 G96 0.5+ 0.0 180520 L01 0.0 0.2- 180602 I52 0.1- 0.0
180519 H01 0.1+ 0.1- 180520 033 0.6+ 0.2- 180602 I52 0.1- 0.1+
180519 H01 0.0 0.0 180520 033 0.0 0.1- 180606 G96 0.9+ 0.5+
180519 H01 0.0 0.1- 180520 033 0.1+ 0.1+ 180606 G96 0.2- 0.2+
180519 H01 0.1+ 0.1- 180520 033 0.1+ 0.0 180606 G96 0.3+ 0.3+
180519 I52 0.5- 0.1- 180520 033 0.1+ 0.1- 180606 G96 0.8+ 0.1-
180519 I52 0.8- 0.1- 180521 033 0.0 0.1- 180610 V06 0.1- 0.0
180519 I52 0.2- 0.2- 180521 H01 0.1+ 0.1- 180610 V06 0.4- 0.2+
180519 I52 0.1- 0.2- 180521 H01 0.0 0.1- 180610 V06 0.3+ 0.4+
180519 033 0.5+ 0.7+ 180521 H01 0.1+ 0.1- 210430 I52 0.6- 0.1-
180519 033 0.1+ 0.2- 180521 H01 0.1+ 0.0 210430 I52 0.1+ 0.3+
180519 033 0.0 0.5- 180521 I52 0.3- 0.0 210430 I52 0.2- 0.2-
180519 104 0.5+ 0.2- 180521 I52 0.0 0.4- 210501 I52 0.2+ 0.0
180519 104 0.2+ 0.3- 180521 I52 0.2- 1.2+ 210501 I52 0.2+ 0.0
180520 104 0.3+ 0.7+ 180522 I52 0.3- 0.5+ 210501 I52 0.5+ 0.1-
180520 033 0.1+ 0.0 180522 I52 0.6- 0.1+
180520 033 0.2- 0.3- 180522 I52 0.1- 0.4+
Ephemeris:
2018 KU1 a,e,i = 0.83, 0.53, 17 q = 0.3910
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 04 01 02 06 20.2 +21 38 53 0.3749 0.6861 26.9 138.8 24.8
...
2021 04 16 03 22 58.6 +52 05 39 0.2661 0.8461 47.3 119.3 22.6
...
2021 04 24 05 26 04.0 +67 47 15 0.2611 0.9207 63.8 101.5 21.6
...
2021 04 30 08 10 43.0 +70 57 20 0.2778 0.9715 74.7 89.3 21.3
2021 05 01 08 36 51.3 +70 32 47 0.2819 0.9795 76.2 87.5 21.3
2021 05 02 09 00 54.6 +69 56 12 0.2863 0.9874 77.7 85.8 21.3
...
2021 05 08 10 40 26.0 +63 58 41 0.3184 1.0325 85.2 76.9 21.3
...
2021 05 16 11 41 34.6 +55 00 43 0.3715 1.0860 91.5 68.5 21.4
...
2021 05 31 12 30 49.6 +41 34 45 0.4867 1.1671 95.7 59.8 21.9
A. U. Tomatic (C) Copyright 2021 MPC M.P.E.C. 2021-J03
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