MPEC 2018-X91 : 2018 XN2
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M.P.E.C. 2018-X91 Issued 2018 Dec. 12, 15:38 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 XN2
Observations:
K18X02N* C2018 12 10.10866 02 39 59.33 +27 31 30.5 21.1 GVEX091G96
K18X02N C2018 12 10.11424 02 40 02.44 +27 31 48.1 21.1 GVEX091G96
K18X02N C2018 12 10.11981 02 40 05.52 +27 32 06.3 21.0 GVEX091G96
K18X02N C2018 12 10.12539 02 40 08.65 +27 32 24.5 VEX091G96
K18X02N C2018 12 10.21710002 40 58.64 +27 37 07.0 20.9 GVEX091H01
K18X02N C2018 12 10.22024902 41 00.36 +27 37 16.5 20.8 GVEX091H01
K18X02N C2018 12 10.23061302 41 06.04 +27 37 47.6 20.5 GVEX091H01
K18X02N C2018 12 10.23771902 41 09.94 +27 38 08.8 20.7 GVEX091H01
K18X02N C2018 12 10.34142 02 42 07.32 +27 43 12.7 21.0 GVEX091I52
K18X02N C2018 12 10.34475 02 42 09.13 +27 43 21.9 21.6 GVEX091I52
K18X02N C2018 12 10.34808 02 42 10.98 +27 43 31.2 21.6 GVEX091I52
K18X02N C2018 12 10.35140 02 42 12.88 +27 43 40.9 21.1 GVEX091I52
K18X02N pC2018 12 10.78841402 46 29.08 +28 04 41.2 21.1 GVEX091L01
K18X02N KC2018 12 10.79014102 46 30.02 +28 04 46.3 21.3 GVEX091L01
K18X02N pC2018 12 10.79186702 46 30.93 +28 04 51.4 21.0 GVEX091L01
K18X02N KC2018 12 11.00293 02 48 23.36 +28 14 27.9 21 GVEX091204
K18X02N HC2018 12 11.05580 02 48 51.75 +28 16 43.9 VEX091204
K18X02N KC2018 12 11.06583002 49 04.10 +28 17 35.1 21.5 VuEX091H21
K18X02N KC2018 12 11.07528202 49 09.03 +28 18 01.7 21.1 VuEX091H21
K18X02N KC2018 12 11.08952602 49 16.46 +28 18 41.4 21.3 VuEX091H21
K18X02N C2018 12 12.11080 02 58 22.74 +29 01 28.8 20.2 GVEX091I52
K18X02N C2018 12 12.11116102 58 22.52 +29 01 28.8 20.8 GVEX091H01
K18X02N C2018 12 12.11413 02 58 24.35 +29 01 37.4 20.9 GVEX091I52
K18X02N C2018 12 12.11532502 58 24.54 +29 01 39.1 20.9 GVEX091H01
K18X02N C2018 12 12.11747 02 58 25.93 +29 01 44.4 20.7 GVEX091I52
K18X02N C2018 12 12.12827202 58 30.83 +29 02 10.6 21.3 GVEX091H01
K18X02N C2018 12 12.13541602 58 34.30 +29 02 27.6 20.9 GVEX091H01
Observer details:
204 Schiaparelli Observatory. Observer L. Buzzi. 0.84-m f/3.5 reflector +
CCD.
G96 Mt. Lemmon Survey. Observer D. C. Fuls. 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. 1.5-m reflector + 10K 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. 0.81-m f/4.0
astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer 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.
Orbital elements:
2018 XN2 Earth MOID = 0.0036 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5 MPC
M 85.89064 (2000.0) P Q
n 0.47783077 Peri. 329.74966 +0.89303331 -0.44763054
a 1.6203916 Node 56.91215 +0.42308518 +0.80039722
e 0.4077295 Incl. 3.14911 +0.15326590 +0.39873698
P 2.06 H 24.9 G 0.15 U 7
Residuals in seconds of arc
181210 G96 0.1- 0.3- 181210 I52 0.3- 0.0 181211 H21 0.1- 0.4+
181210 G96 0.0 0.6- 181210 I52 0.3- 0.0 181211 H21 0.1+ 0.6+
181210 G96 0.1- 0.3- 181210 I52 0.3+ 0.4+ 181212 I52 0.5+ 0.2-
181210 G96 0.4+ 0.0 181210 L01 0.3- 0.1- 181212 H01 0.2- 0.0
181210 H01 0.1+ 0.0 181210 L01 0.0 0.0 181212 I52 0.3+ 0.3+
181210 H01 0.0 0.0 181210 L01 0.2- 0.2+ 181212 H01 0.2- 0.1+
181210 H01 0.1+ 0.0 181211 204 0.1+ 0.3- 181212 I52 0.2- 0.9-
181210 H01 0.1+ 0.1+ 181211 204 0.3- 0.2+ 181212 H01 0.1- 0.2+
181210 I52 0.2+ 0.2+ 181211 H21 0.0 0.2+ 181212 H01 0.1+ 0.0
Ephemeris:
2018 XN2 a,e,i = 1.62, 0.41, 3 q = 0.9597
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 11 12 20 40 38.0 -25 41 08 0.09909 0.9719 76.7 97.6 23.3
...
2018 11 27 23 39 40.1 +02 00 16 0.06184 1.0113 111.7 65.1 21.2
...
2018 12 05 01 41 03.6 +21 12 25 0.07422 1.0416 137.6 39.6 20.9
...
2018 12 11 02 48 24.8 +28 14 55 0.09678 1.0677 147.6 29.6 21.3
2018 12 12 02 57 21.7 +28 57 18 0.1012 1.0724 148.6 28.5 21.3
2018 12 13 03 05 44.5 +29 34 02 0.1059 1.0770 149.5 27.6 21.4
...
2018 12 19 03 46 04.4 +31 49 54 0.1364 1.1064 152.3 24.5 21.9
...
2018 12 27 04 21 50.2 +32 50 08 0.1832 1.1486 152.1 23.6 22.6
...
2019 01 11 05 03 25.0 +32 38 50 0.2880 1.2338 146.4 26.1 23.8
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-X91
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