MPEC 2018-X133: 2018 XS4
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M.P.E.C. 2018-X133 Issued 2018 Dec. 15, 18:14 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 XS4
Observations:
K18X04S* C2018 12 14.30976023 52 17.00 +51 13 31.4 17.39oVEX133T08
K18X04S C2018 12 14.31854323 52 43.99 +51 18 39.3 17.59oVEX133T08
K18X04S C2018 12 14.32613323 53 07.55 +51 23 04.3 17.89oVEX133T08
K18X04S C2018 12 14.33629323 53 39.74 +51 29 00.2 17.47oVEX133T08
K18X04S C2018 12 14.34438423 54 05.80 +51 33 44.0 17.80oVEX133T08
K18X04S KC2018 12 14.74333500 25 15.78 +56 06 14.4 17.9 GVEX133L01
K18X04S KC2018 12 14.74392300 25 18.98 +56 06 41.1 17.8 GVEX133L01
K18X04S KC2018 12 14.74650100 25 32.75 +56 08 36.1 17.5 GVEX133L01
K18X04S KC2018 12 14.75611 00 26 30.94 +56 15 35.3 17.1 GVEX133204
K18X04S KC2018 12 14.75820 00 26 42.35 +56 17 09.2 VEX133204
K18X04S KC2018 12 14.76037 00 26 54.28 +56 18 46.7 VEX133204
K18X04S KC2018 12 14.76317 00 27 09.66 +56 20 52.4 VEX133204
K18X04S KC2018 12 14.76515 00 27 20.58 +56 22 20.8 VEX133204
K18X04S KC2018 12 14.91998100 43 38.89 +58 16 45.3 16.9 GVEX133J95
K18X04S KC2018 12 14.92027700 43 40.98 +58 16 58.4 16.9 GVEX133J95
K18X04S KC2018 12 14.92059600 43 43.19 +58 17 12.5 16.8 GVEX133J95
K18X04S KC2018 12 14.92643000 44 24.45 +58 21 31.6 17.1 GVEX133J95
K18X04S KC2018 12 14.95262600 47 19.69 +58 41 19.8 17.2 GVEX133C95
K18X04S KC2018 12 14.95873700 48 05.38 +58 45 46.4 17.0 GVEX133C95
K18X04S KC2018 12 14.96485500 48 51.43 +58 50 12.6 17.3 GVEX133C95
K18X04S KC2018 12 14.97096200 49 38.07 +58 54 38.6 16.8 GVEX133C95
K18X04S KC2018 12 14.98901 00 51 56.85 +59 06 50.3 16.3 qEX133104
K18X04S pC2018 12 14.99885 00 53 15.90 +59 13 56.2 16.5 qEX133104
K18X04S mC2018 12 15.40526 02 08 36.25 +64 02 04.9 16.0 RqEX133H15
K18X04S mC2018 12 15.41138 02 10 06.83 +64 05 06.6 16.2 RqEX133H15
K18X04S mC2018 12 15.41750 02 11 38.25 +64 08 06.8 16.3 RqEX133H15
K18X04S C2018 12 15.45336 02 23 40.42 +64 40 58.6 17.2 RrEX133P93
K18X04S C2018 12 15.45394 02 23 49.16 +64 41 16.9 17.5 RrEX133P93
K18X04S C2018 12 15.45451 02 23 57.71 +64 41 34.8 17.1 RrEX133P93
K18X04S KC2018 12 15.69502 03 37 00.92 +65 39 25.8 16.6 GVEX133587
K18X04S KC2018 12 15.69605 03 37 20.93 +65 39 29.7 VEX133587
K18X04S KC2018 12 15.69708 03 37 41.08 +65 39 33.3 VEX133587
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers
P. Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD.
204 Schiaparelli Observatory. Observer L. Buzzi. 0.84-m f/3.5 reflector +
CCD.
587 Sormano. Observers A. Fumagalli, P. Sicoli, A. Testa. Measurer
A. Testa. 0.5-m f/6.8 reflector + CCD.
C95 SATINO Remote Observatory, Haute Provence. Observer J. Jahn. 0.60-m
f/3.2 Newtonian reflector + CCD.
H15 ISON-NM Observatory, Mayhill. Observer L. Elenin. 0.4-m f/3 reflector +
CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.41-m f/6.3
Schmidt-Cassegrain + CCD.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
P93 Space Tracking and Communications Center, JAXA. Observers S. Okumura,
T. Nimura. 1.0-m f/3.0 reflector + CCD.
T08 ATLAS-MLO, Mauna Loa. Observers L. Denneau, J. Tonry, A. Heinze,
H. Weiland. Measurers L. Denneau, J. Tonry, A. Heinze, H. Weiland,
B. Stalder. 0.5-m reflector + CCD.
Orbital elements:
2018 XS4 Earth MOID = 0.0070 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5 MPC
M 34.66561 (2000.0) P Q
n 0.25668724 Peri. 173.74270 +0.17569107 -0.97814002
a 2.4520719 Node 266.09896 +0.89830802 +0.20551661
e 0.5966797 Incl. 6.40180 +0.40271001 -0.03170210
P 3.84 H 25.4 G 0.15 U 4
Residuals in seconds of arc
181214 T08 0.6- 0.8- 181214 204 0.2+ 0.5+ 181214 104 0.7+ 0.4-
181214 T08 0.4- 0.1+ 181214 204 0.2+ 0.2+ 181215 H15 1.0- 0.4-
181214 T08 1.0- 0.3- 181214 J95 0.0 0.1+ 181215 H15 0.8- 1.0-
181214 T08 0.4- 0.0 181214 J95 0.1+ 0.0 181215 H15 0.7- 0.3-
181214 T08 0.2+ 0.4+ 181214 J95 0.1- 0.1- 181215 P93 0.2+ 0.6+
181214 L01 0.5+ 0.2+ 181214 J95 0.2+ 0.0 181215 P93 0.2+ 0.6+
181214 L01 0.9+ 0.6+ 181214 C95 0.8- 0.3- 181215 P93 0.0 0.4+
181214 L01 0.3+ 0.6+ 181214 C95 0.0 0.0 181215 587 0.2+ 0.2+
181214 204 0.2+ 0.3- 181214 C95 0.7- 0.1- 181215 587 0.0 0.1+
181214 204 0.1+ 0.0 181214 C95 0.0 0.4+ 181215 587 0.7+ 0.2-
181214 204 0.4+ 0.2+ 181214 104 0.2+ 1.3-
Ephemeris:
2018 XS4 a,e,i = 2.45, 0.60, 6 q = 0.9890
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 11 15 22 28 44.9 +23 34 01 0.1479 1.0550 112.6 60.0 23.5
...
2018 11 30 22 27 34.8 +25 24 34 0.07953 1.0033 100.1 75.4 22.5
...
2018 12 08 22 36 26.0 +29 35 40 0.04141 0.9908 96.7 80.9 21.3
...
2018 12 14 23 38 02.0 +48 12 35 0.01344 0.9889 109.4 69.9 18.5
2018 12 15 00 54 43.4 +59 18 00 0.0096180.9892 120.8 58.7 17.4
2018 12 16 05 15 56.4 +63 31 24 0.0072720.9897 139.7 40.1 16.3
...
2018 12 22 09 51 05.0 -08 16 39 0.02892 0.9963 115.1 63.4 19.9
...
2018 12 30 10 03 34.4 -15 31 19 0.06748 1.0146 115.9 60.7 21.7
...
2019 01 14 10 01 26.6 -16 59 42 0.1395 1.0756 128.3 45.8 23.0
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-X133
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