MPEC 2018-A86 : 2018 AD4
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M.P.E.C. 2018-A86 Issued 2018 Jan. 15, 18:23 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 AD4
Observations:
K18A04D* C2018 01 13.32611 08 51 57.76 +22 51 54.8 19.4 GUEA086G96
K18A04D C2018 01 13.33124 08 51 56.37 +22 52 26.9 19.5 GUEA086G96
K18A04D C2018 01 13.33636 08 51 54.97 +22 52 58.4 19.6 GUEA086G96
K18A04D C2018 01 13.34148 08 51 53.55 +22 53 30.2 19.7 GUEA086G96
K18A04D C2018 01 13.41332 08 51 33.83 +23 00 52.9 19.5 GUEA086I52
K18A04D C2018 01 13.41374 08 51 33.73 +23 00 55.5 19.3 GUEA086I52
K18A04D C2018 01 13.41415 08 51 33.62 +23 00 58.0 19.3 GUEA086I52
K18A04D C2018 01 13.41457 08 51 33.50 +23 01 00.3 19.4 GUEA086I52
K18A04D KC2018 01 13.95448 08 49 19.12 +23 56 16.5 19.1 UEA086K63
K18A04D KC2018 01 13.96217 08 49 17.02 +23 57 04.6 19.4 UEA086K63
K18A04D KC2018 01 13.97790 08 49 12.67 +23 58 42.2 19.2 UEA086K63
K18A04D KC2018 01 14.09994 08 48 39.00 +24 11 10.5 UEA086204
K18A04D KC2018 01 14.10825 08 48 36.71 +24 12 01.2 UEA086204
K18A04D KC2018 01 14.11653 08 48 34.42 +24 12 51.9 19.5 GUEA086204
K18A04D C2018 01 14.27306 08 47 57.62 +24 29 07.9 19.0 GUEA086I52
K18A04D C2018 01 14.27525 08 47 57.01 +24 29 21.8 18.6 GUEA086I52
K18A04D C2018 01 14.27674 08 47 56.59 +24 29 31.4 18.6 GUEA086I52
K18A04D KC2018 01 14.32497 08 47 42.56 +24 34 32.5 oEA086711
K18A04D KC2018 01 14.32770 08 47 41.77 +24 34 49.9 oEA086711
K18A04D KC2018 01 14.33052 08 47 40.96 +24 35 06.7 oEA086711
K18A04D KC2018 01 14.94681 08 44 59.58 +25 37 46.0 18.9 RoEA086K88
K18A04D KC2018 01 14.94997 08 44 58.69 +25 38 05.5 18.9 RoEA086K88
K18A04D KC2018 01 14.95313 08 44 57.85 +25 38 24.1 19.3 RoEA086K88
K18A04D KC2018 01 15.37179 08 43 04.01 +26 21 16.4 oEA086711
K18A04D KC2018 01 15.37368 08 43 03.45 +26 21 27.9 oEA086711
K18A04D KC2018 01 15.37537 08 43 02.95 +26 21 38.1 oEA086711
K18A04D KC2018 01 15.37708 08 43 02.45 +26 21 48.4 oEA086711
K18A04D C2018 01 15.53896 08 42 16.15 +26 37 56.3 19.1 GUEA086I52
K18A04D C2018 01 15.54093 08 42 15.59 +26 38 08.2 19.2 GUEA086I52
K18A04D C2018 01 15.54292 08 42 15.04 +26 38 19.9 19.2 GUEA086I52
K18A04D C2018 01 15.54489 08 42 14.52 +26 38 31.7 18.9 GUEA086I52
Observer details:
204 Schiaparelli Observatory. Observer L. Buzzi. 0.60-m f/4.64 reflector
+ CCD, 0.84-m f/3.5 reflector + CCD.
711 McDonald Observatory. Observer J. G. Ries. 2.1-m reflector + CCD + focal
reducer.
G96 Mt. Lemmon Survey. Observer D. C. Fuls. 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.
I52 Steward Observatory, Mt. Lemmon Station. Observers R. G. Matheny,
J. A. Johnson. 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. 1.0-m reflector + CCD.
K63 G. Pascoli Observatory, Castelvecchio Pascoli. Observer R. Bacci. 0.40-m
f/3.2 Newtonian reflector + CCD.
K88 GINOP-KHK, Piszkesteto. Observer K. Sarneczky. 0.60-m Schmidt + CCD.
Orbital elements:
2018 AD4 Earth MOID = 0.1154 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5 MPC
M 10.62183 (2000.0) P Q
n 1.10045839 Peri. 199.19620 +0.65284560 +0.72602300
a 0.9291524 Node 112.19914 -0.66088833 +0.68531132
e 0.2179741 Incl. 13.49500 -0.37016110 +0.05691218
P 0.90 H 22.7 G 0.15 U 8
Residuals in seconds of arc
180113 G96 0.1- 0.1- 180114 204 0.2+ 0.1- 180114 K88 0.6+ 0.5-
180113 G96 0.0 0.2+ 180114 204 0.2+ 0.2- 180115 711 0.3- 0.2+
180113 G96 0.1+ 0.1- 180114 204 0.0 0.1+ 180115 711 0.3- 0.2+
180113 G96 0.2- 0.0 180114 I52 0.0 0.4- 180115 711 0.4- 0.2+
180113 I52 0.2- 0.1+ 180114 I52 0.1+ 0.2- 180115 711 0.3- 0.2+
180113 I52 0.0 0.1+ 180114 I52 0.1+ 0.2+ 180115 I52 0.1+ 0.4-
180113 I52 0.1+ 0.1+ 180114 711 0.5+ 0.2+ 180115 I52 0.0 0.1-
180113 I52 0.0 0.2- 180114 711 0.4+ 0.8+ 180115 I52 0.1+ 0.2-
180113 K63 0.4- 0.5- 180114 711 0.3+ 0.2+ 180115 I52 0.5+ 0.1-
180113 K63 0.2- 0.1- 180114 K88 0.3- 0.2+
180113 K63 0.3- 0.0 180114 K88 0.2- 0.3+
Ephemeris:
2018 AD4 a,e,i = 0.93, 0.22, 13 q = 0.7266
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2017 12 16 09 48 40.1 -11 41 22 0.2056 1.0675 108.5 60.9 21.6
...
2017 12 31 09 32 22.1 +02 11 17 0.1601 1.0995 133.4 40.5 20.5
...
2018 01 08 09 11 42.6 +13 52 23 0.1445 1.1121 151.2 25.2 19.9
...
2018 01 14 08 49 06.3 +24 01 15 0.1406 1.1196 164.2 13.8 19.5
2018 01 15 08 44 44.8 +25 43 30 0.1408 1.1207 165.8 12.5 19.4
2018 01 16 08 40 14.0 +27 24 43 0.1412 1.1217 166.9 11.5 19.4
...
2018 01 22 08 10 33.5 +36 45 34 0.1482 1.1268 163.0 14.8 19.6
...
2018 01 30 07 28 44.2 +45 54 55 0.1687 1.1307 147.3 28.0 20.3
...
2018 02 14 06 30 19.4 +53 42 28 0.2266 1.1295 123.8 46.6 21.5
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-A86
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