MPEC 2018-H68 : 2018 HC1
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Read MPEC 2018-H67
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M.P.E.C. 2018-H68 Issued 2018 Apr. 22, 16:10 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 HC1
Observations:
K18H01C* C2018 04 21.34514 14 05 44.48 -18 36 37.5 17.4 GUEH068703
K18H01C C2018 04 21.35747 14 05 37.47 -18 43 27.4 17.8 GUEH068703
K18H01C C2018 04 21.36298 14 05 34.46 -18 46 27.6 17.6 GUEH068703
K18H01C C2018 04 21.42071 14 05 04.71 -19 16 32.3 UEH068I52
K18H01C C2018 04 21.42089 14 05 04.65 -19 16 38.1 17.9 GUEH068I52
K18H01C C2018 04 21.42107 14 05 04.52 -19 16 43.4 UEH068I52
K18H01C C2018 04 21.42126 14 05 04.51 -19 16 49.0 UEH068I52
K18H01C C2018 04 21.43853 14 04 56.54 -19 25 18.6 17.1 GUEH068I52
K18H01C C2018 04 21.43857 14 05 23.80 -19 24 41.6 18.1 oUEH068T05
K18H01C C2018 04 21.43872 14 04 56.47 -19 25 24.0 17.4 GUEH068I52
K18H01C C2018 04 21.43890 14 04 56.35 -19 25 29.8 17.4 GUEH068I52
K18H01C C2018 04 21.43908 14 04 56.27 -19 25 34.4 17.6 GUEH068I52
K18H01C C2018 04 21.43948 14 05 23.28 -19 25 09.0 18.6 oUEH068T05
K18H01C C2018 04 21.44943 14 05 17.86 -19 30 01.7 18.0 oUEH068T05
K18H01C C2018 04 21.46580 14 05 08.87 -19 38 05.2 18.2 oUEH068T05
K18H01C `C2018 04 21.51797 14 05 17.59 -19 53 41.6 17.6 VUEH068Q62
K18H01C `C2018 04 21.52189 14 05 15.66 -19 55 31.1 17.3 VUEH068Q62
K18H01C `C2018 04 21.52577 14 05 13.81 -19 57 18.7 17.7 VUEH068Q62
K18H01C C2018 04 21.61493 14 04 40.60 -20 45 31.7 19.0 RrEH068P93
K18H01C C2018 04 21.61724 14 04 39.56 -20 46 28.2 19.1 RrEH068P93
K18H01C C2018 04 21.61955 14 04 38.52 -20 47 23.7 19.0 RrEH068P93
K18H01C C2018 04 21.62999 14 04 32.35 -20 51 37.6 18.1 VqEH068900
K18H01C C2018 04 21.63502 14 04 30.14 -20 53 36.2 18.1 VqEH068900
K18H01C C2018 04 21.64007 14 04 27.96 -20 55 34.7 18.3 VqEH068900
K18H01C `C2018 04 21.64137 14 04 19.54 -20 46 31.8 18.0 VqEH068Q62
K18H01C `C2018 04 21.64456 14 04 18.13 -20 47 46.1 18.2 VqEH068Q62
K18H01C `C2018 04 21.64766 14 04 16.83 -20 48 58.0 18.2 VqEH068Q62
K18H01C `C2018 04 21.65710 14 04 12.83 -20 52 36.5 17.9 VqEH068Q62
K18H01C KC2018 04 21.91503 14 03 41.91 -22 29 26.0 18.8 VdEH068L01
K18H01C KC2018 04 21.91625 14 03 41.52 -22 29 47.5 19.0 VdEH068L01
K18H01C KC2018 04 21.91748 14 03 41.13 -22 30 09.7 19.1 VdEH068L01
K18H01C KC2018 04 21.91871 14 03 40.71 -22 30 31.8 18.8 VdEH068L01
K18H01C KC2018 04 21.92009 14 03 40.25 -22 30 55.5 19.1 VdEH068L01
K18H01C C2018 04 21.94363 14 03 31.96 -22 37 57.9 qEH068246
K18H01C C2018 04 21.94388 14 03 31.92 -22 38 01.9 qEH068246
K18H01C C2018 04 21.94406 14 03 31.87 -22 38 06.0 qEH068246
K18H01C C2018 04 21.94455 14 03 31.72 -22 38 14.5 qEH068246
K18H01C KC2018 04 21.95785 14 03 27.90 -22 41 51.1 18.6 VqEH068595
K18H01C KC2018 04 21.96611 14 03 25.19 -22 44 10.1 18.9 VqEH068595
K18H01C C2018 04 22.25869 14 02 49.05 -23 54 51.5 UEH068I52
K18H01C C2018 04 22.25887 14 02 48.98 -23 54 54.6 UEH068I52
K18H01C C2018 04 22.25905 14 02 48.92 -23 54 57.2 UEH068I52
K18H01C C2018 04 22.25923 14 02 48.93 -23 54 59.3 18.4 GUEH068I52
K18H01C KC2018 04 22.59019 14 02 00.47 -24 51 21.8 19.8 VqEH068E23
K18H01C KC2018 04 22.60234 14 01 57.52 -24 53 21.7 19.4 VqEH068E23
K18H01C KC2018 04 22.61901 14 01 53.52 -24 56 04.8 19.5 VqEH068E23
Observer details:
246 Klet Observatory-KLENOT. Observers J. Ticha, M. Tichy. Measurer M. Tichy.
1.06-m KLENOT Telescope + CCD.
595 Farra d'Isonzo. Observers M. Ceschia, E. Pettarin. Measurer E. Pettarin.
0.61-m f/4.0 reflector + CCD.
703 Catalina Sky Survey. Observer E. J. Christensen. Measurers
B. M. Africano, 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. L. Seaman,
F. C. Shelly. 0.68-m Schmidt + 10K CCD.
900 Moriyama. Observer Y. Ikari. 0.26-m f/7.0 reflector + CCD.
E23 Arcadia. Observer A. Hidas. 0.35-m f/1.9 reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers E. J. Christensen,
B. M. Africano. Measurers B. M. Africano, 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. L. Seaman, F. C. Shelly. 1.0-m reflector + CCD.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
P93 Space Tracking and Communications Center, JAXA. Observers K. Nishiyama,
S. Okumura. 1.0-m f/3.0 reflector + CCD.
Q62 iTelescope Observatory, Siding Spring. Observer S. M. Tilley. 0.4-m
f/3.5 reflector + CCD, 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer.
T05 ATLAS-HKO, Haleakala. Observers L. Denneau, H. Flewelling, A. Heinze,
H. Weiland, J. Tonry. Measurers L. Denneau, H. Flewelling, A. Heinze,
J. Tonry. 0.5-m f/2.0 Schmidt + CCD.
Orbital elements:
2018 HC1 Earth MOID = 0.0032 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 7.47455 (2000.0) P Q
n 0.40772925 Peri. 107.85855 -0.74266367 -0.66499204
a 1.8011704 Node 30.60454 +0.54055950 -0.66490896
e 0.5801158 Incl. 8.92340 +0.39527977 -0.34012006
P 2.42 H 26.8 G 0.15 U 5
Residuals in seconds of arc
180421 703 0.1+ 1.3- 180421 Q62 0.2+ 0.7+ 180421 L01 0.4+ 0.2+
180421 703 0.6- 1.1- 180421 Q62 0.6+ 1.0+ 180421 246 0.8- 0.4-
180421 703 0.1+ 0.6- 180421 P93 0.5+ 0.6+ 180421 246 0.2- 0.1-
180421 I52 1.0- 0.4- 180421 P93 0.6+ 0.2+ 180421 246 0.1- 1.1-
180421 I52 0.6- 0.8- 180421 P93 0.7+ 0.6+ 180421 246 0.0 1.2-
180421 I52 1.2- 0.7- 180421 900 0.1- 0.8- 180421 595 0.5+ 0.2+
180421 I52 0.1- 0.6- 180421 900 0.2+ 0.2- 180421 595 0.0 0.1+
180421 I52 0.5- 0.5- 180421 900 0.9+ 0.0 180422 I52 0.2- 0.1+
180421 T05 0.9+ 0.9+ 180421 Q62 0.4- 0.7+ 180422 I52 0.5- 0.7-
180421 I52 0.3- 0.4- 180421 Q62 0.8- 1.1+ 180422 I52 0.6- 0.9-
180421 I52 0.9- 0.9- 180421 Q62 0.3- 1.6+ 180422 I52 0.3+ 0.6-
180421 I52 0.9- 0.3- 180421 Q62 0.2- 1.4+ 180422 E23 0.3- 0.3+
180421 T05 0.8+ 0.8+ 180421 L01 0.1+ 0.3- 180422 E23 0.1- 1.0+
180421 T05 (2.2+ 4.0+) 180421 L01 0.3+ 0.0 180422 E23 0.2- 0.3+
180421 T05 1.1+ 2.3- 180421 L01 0.6+ 0.3-
180421 Q62 0.7+ 0.7+ 180421 L01 0.4+ 0.6-
Ephemeris:
2018 HC1 a,e,i = 1.80, 0.58, 9 q = 0.7563
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 03 23 01 48 59.7 +29 47 31 0.2637 0.8043 37.7 130.7 29.2
...
2018 04 07 01 55 18.0 +32 58 03 0.1173 0.9001 29.1 147.3 29.9
...
2018 04 15 01 54 05.1 +35 56 55 0.04442 0.9637 26.9 151.9 28.8
...
2018 04 21 14 08 15.9 -14 12 53 0.01007 1.0149 175.7 4.3 17.2
2018 04 22 14 03 19.7 -22 46 00 0.01881 1.0236 169.2 10.6 18.9
2018 04 23 14 01 24.5 -25 51 28 0.02770 1.0323 166.5 13.1 19.8
...
2018 04 29 13 58 45.8 -30 00 43 0.08190 1.0856 163.2 15.5 22.4
...
2018 05 07 13 58 52.0 -30 40 21 0.1564 1.1580 161.1 16.4 24.0
...
2018 05 22 14 03 13.8 -30 16 53 0.3080 1.2945 153.2 20.7 25.8
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-H68
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