MPEC 2018-X79 : 2018 XB2
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M.P.E.C. 2018-X79 Issued 2018 Dec. 12, 11:50 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 XB2
Observations:
K18X02B* C2018 12 09.28043 04 14 19.75 -24 26 16.2 19.3 GVEX079703
K18X02B C2018 12 09.28566 04 14 19.37 -24 25 45.0 19.2 GVEX079703
K18X02B C2018 12 09.29089 04 14 18.94 -24 25 13.8 19.2 GVEX079703
K18X02B C2018 12 09.29612 04 14 18.52 -24 24 42.0 19.1 GVEX079703
K18X02B C2018 12 09.32499404 14 15.99 -24 21 49.1 19.4 GVEX079H01
K18X02B C2018 12 09.32821604 14 15.74 -24 21 29.8 19.2 GVEX079H01
K18X02B C2018 12 09.34324004 14 14.54 -24 19 58.9 19.4 GVEX079H01
K18X02B C2018 12 09.34835504 14 14.14 -24 19 27.9 19.0 GVEX079H01
K18X02B C2018 12 09.35188 04 14 13.96 -24 19 06.4 19.2 GVEX079I52
K18X02B C2018 12 09.35230 04 14 13.95 -24 19 03.8 19.5 GVEX079I52
K18X02B C2018 12 09.35271 04 14 13.95 -24 19 01.3 18.9 GVEX079I52
K18X02B C2018 12 09.35313 04 14 13.89 -24 18 58.9 19.3 GVEX079I52
K18X02B KC2018 12 09.49202 04 14 07.92 -24 04 11.9 19.5 VqEX079E23
K18X02B KC2018 12 09.50244 04 14 07.01 -24 03 09.0 18.9 VqEX079E23
K18X02B KC2018 12 09.52392 04 14 05.34 -24 00 59.3 19.8 VqEX079E23
K18X02B C2018 12 10.16793 04 13 27.27 -22 55 45.3 19.1 GVEX079I52
K18X02B C2018 12 10.16811 04 13 27.24 -22 55 44.5 19.2 GVEX079I52
K18X02B C2018 12 10.16981 04 13 27.10 -22 55 34.3 19.6 GVEX079I52
K18X02B C2018 12 10.16999 04 13 27.15 -22 55 32.6 19.7 GVEX079I52
K18X02B KC2018 12 10.21797504 13 22.10 -22 50 38.7 19.8 VuEX079H21
K18X02B KC2018 12 10.21954904 13 21.98 -22 50 28.6 19.2 VuEX079H21
K18X02B KC2018 12 10.22170204 13 21.78 -22 50 15.4 19.8 VuEX079H21
K18X02B KC2018 12 10.89519 04 12 41.79 -21 38 40.5 19.1 VEX079104
K18X02B KC2018 12 10.90115 04 12 41.32 -21 38 01.6 19.4 VEX079104
K18X02B KC2018 12 10.90711 04 12 40.84 -21 37 22.9 19.3 VEX079104
K18X02B pC2018 12 10.91788204 12 39.90 -21 36 13.3 19.5 GVEX079L01
K18X02B KC2018 12 10.91874104 12 39.82 -21 36 07.7 19.4 GVEX079L01
K18X02B KC2018 12 10.92132004 12 39.58 -21 35 51.1 19.4 GVEX079L01
K18X02B KC2018 12 10.92369404 12 39.39 -21 35 35.3 19.4 GVEX079L01
K18X02B pC2018 12 10.92477504 12 39.28 -21 35 28.3 19.3 GVEX079L01
K18X02B KC2018 12 11.80557 04 11 48.89 -19 57 08.5 19.2 GVEX079L29
K18X02B KC2018 12 11.80806 04 11 48.66 -19 56 51.8 19.5 GVEX079L29
K18X02B KC2018 12 11.81055 04 11 48.52 -19 56 34.0 19.1 GVEX079L29
K18X02B KC2018 12 11.81303 04 11 48.37 -19 56 18.6 18.9 GVEX079L29
K18X02B KC2018 12 11.94010 04 11 38.69 -19 42 50.3 VEX079204
K18X02B KC2018 12 11.94414 04 11 38.43 -19 42 22.6 19.1 GVEX079204
K18X02B KC2018 12 11.94817 04 11 38.11 -19 41 55.2 VEX079204
K18X02B C2018 12 12.14947 04 11 28.72 -19 18 46.3 19.0 GVEX079I52
K18X02B C2018 12 12.15140 04 11 28.57 -19 18 32.4 19.5 GVEX079I52
K18X02B C2018 12 12.15159 04 11 28.57 -19 18 30.8 19.0 GVEX079I52
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.
703 Catalina Sky Survey. Observer B. M. Africano. Measurers B. M. Africano,
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, R. L. Seaman,
F. C. Shelly. 0.68-m Schmidt + 10K CCD.
E23 Arcadia. Observer A. Hidas. 0.35-m f/1.9 reflector + CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.61-m f/4.5
astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers H. Groeller,
G. J. Leonard. Measurers B. M. Africano, 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, 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.
L29 Drebach-South Observatory, Windhoek. Observers G. Lehmann, K. Lehmann.
0.4-m f/3.6 reflector + CCD.
Orbital elements:
2018 XB2 Earth MOID = 0.1269 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5 MPC
M 70.37154 (2000.0) P Q
n 0.51965875 Peri. 344.13526 +0.21379731 -0.91994339
a 1.5322297 Node 92.62672 +0.92823428 +0.08647892
e 0.2801427 Incl. 19.20635 +0.30442050 +0.38239452
P 1.90 H 21.6 G 0.15 U 7
Residuals in seconds of arc
181209 703 0.7- 0.2+ 181209 E23 0.5+ 0.4+ 181210 L01 0.3- 0.5+
181209 703 0.0 0.1+ 181210 I52 0.2- 0.1+ 181210 L01 0.7- 0.5+
181209 703 0.0 0.0 181210 I52 0.4- 0.2- 181211 L29 0.2- 0.2-
181209 703 0.1+ 0.4+ 181210 I52 0.5- 0.5- 181211 L29 0.7- 0.2-
181209 H01 0.0 0.0 181210 I52 0.4+ 0.1+ 181211 L29 0.1+ 0.9+
181209 H01 0.1+ 0.2- 181210 H21 0.6+ 0.3- 181211 L29 0.7+ 0.4-
181209 H01 0.0 0.1- 181210 H21 0.7+ 0.0 181211 204 0.4- 0.1-
181209 H01 0.1+ 0.1- 181210 H21 0.3+ 0.4- 181211 204 0.2+ 0.0
181209 I52 0.5- 0.1- 181210 104 0.3+ 0.4- 181211 204 0.0 0.1-
181209 I52 0.2- 0.1- 181210 104 0.2+ 0.1- 181212 I52 0.0 0.6-
181209 I52 0.3+ 0.1- 181210 104 0.0 0.0 181212 I52 0.1- 0.1+
181209 I52 0.1- 0.2- 181210 L01 0.5+ 0.2+ 181212 I52 0.1+ 0.4+
181209 E23 0.2+ 0.0 181210 L01 0.3+ 0.3+
181209 E23 0.7- 0.2+ 181210 L01 0.2- 0.1+
Ephemeris:
2018 XB2 a,e,i = 1.53, 0.28, 19 q = 1.1030
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 11 12 04 36 37.2 -46 02 23 0.2860 1.1338 113.3 53.3 21.1
...
2018 11 27 04 26 50.8 -38 57 53 0.2173 1.1111 119.9 50.4 20.4
...
2018 12 05 04 18 49.6 -30 45 21 0.1836 1.1049 126.6 45.7 19.9
...
2018 12 11 04 12 35.0 -21 26 35 0.1629 1.1030 133.4 40.4 19.5
2018 12 12 04 11 35.5 -19 35 17 0.1600 1.1030 134.7 39.4 19.4
2018 12 13 04 10 37.4 -17 38 44 0.1573 1.1030 135.9 38.4 19.3
...
2018 12 19 04 05 33.4 -04 20 22 0.1464 1.1044 143.0 32.4 19.0
...
2018 12 27 04 01 43.6 +15 32 29 0.1485 1.1100 146.3 29.5 19.0
...
2019 01 11 04 08 46.3 +44 01 01 0.2009 1.1316 133.7 38.9 19.9
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-X79
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