MPEC 2018-R85 : 2017 XD
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M.P.E.C. 2018-R85 Issued 2018 Sept. 9, 11:51 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
2017 XD
Revision to MPEC 2017-X79
Additional Observations:
K17X00D C2005 03 11.12525 04 40 33.14 -03 06 02.5 19.5 RoER085699
K17X00D C2005 03 11.13820 04 40 33.05 -03 05 34.0 oER085699
K17X00D C2005 03 11.15115 04 40 32.73 -03 05 07.5 oER085699
K17X00D C2005 03 11.16413 04 40 32.69 -03 04 39.5 oER085699
K17X00D |C2018 09 08.36300 05 09 18.89 -19 24 11.8 21.7 GUER085807
K17X00D |C2018 09 08.37640 05 09 19.16 -19 24 23.7 21.5 GUER085807
K17X00D |C2018 09 08.38951 05 09 19.42 -19 24 35.8 21.4 GUER085807
Observer details:
699 Lowell Observatory-LONEOS. Observer M. E. V. Ness. 0.59-m LONEOS
Schmidt + CCD.
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes.
0.61-m f/6.5 astrograph + CCD.
Orbital elements:
2017 XD Earth MOID = 0.1716 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 16.92081 (2000.0) P Q
n 0.46390352 Peri. 96.66910 -0.31206938 +0.89183329
a 1.6526629 Node 148.16345 -0.90840125 -0.38105085
e 0.7813801 Incl. 38.37650 +0.27824427 -0.24379013
P 2.12 H 17.5 G 0.15 U 3
Residuals in seconds of arc
050311 699 0.2- 1.2- 171208 807 0.3+ 0.1+ 171224 204 0.1+ 0.1-
050311 699 0.8+ 0.2+ 171208 926 0.1- 0.1+ 171224 I47 0.1+ 0.1+
050311 699 1.7- 0.5- 171208 926 0.1+ 0.2+ 171224 I47 0.3- 0.1+
050311 699 0.0 0.3+ 171208 926 0.2+ 0.0 171230 W88 0.5+ 0.3-
171026 G96 0.2+ 0.7+ 171212 807 0.4- 0.2+ 171230 W88 0.2+ 0.3+
171026 G96 0.5+ 0.3- 171212 807 0.2- 0.1- 171230 W88 0.4+ 0.1+
171026 G96 0.3+ 0.3+ 171212 807 0.1+ 0.1- 171230 F51 0.1- 0.1+
171026 G96 0.3- 0.1- 171212 691 0.1- 0.0 171230 F51 0.1- 0.1+
171203 F51 0.0 0.1+ 171212 691 0.1+ 0.1+ 180106 Q62 0.3- 0.2-
171203 F51 0.1- 0.1+ 171212 691 0.1+ 0.1- 180106 Q62 0.2- 0.1-
171203 F51 0.0 0.1+ 171216 807 0.1+ 0.0 180106 Q62 0.7- 0.1-
171206 807 0.0 0.4- 171216 807 0.0 0.2+ 180107 W88 0.5+ 0.1+
171206 807 0.5- 0.5- 171216 807 0.1+ 0.0 180107 W88 0.4+ 0.2-
171206 807 0.3- 0.1+ 171216 807 0.0 0.1+ 180908 807 0.0 0.4-
171208 807 0.1- 0.2- 171224 204 0.4+ 0.6- 180908 807 0.0 0.1+
171208 807 0.1+ 0.1- 171224 204 0.3+ 0.2- 180908 807 0.0 0.1+
Ephemeris:
2017 XD a,e,i = 1.65, 0.78, 38 q = 0.3613
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 08 10 04 48 51.7 -12 51 57 2.4007 2.3072 72.4 24.8 22.4
...
2018 08 25 05 01 37.8 -15 56 34 2.3249 2.3996 81.8 24.6 22.4
...
2018 09 02 05 06 31.1 -17 48 47 2.2810 2.4455 87.0 24.3 22.4
...
2018 09 08 05 09 10.9 -19 18 37 2.2475 2.4783 90.9 24.0 22.4
2018 09 09 05 09 32.1 -19 34 01 2.2420 2.4836 91.6 23.9 22.3
2018 09 10 05 09 51.7 -19 49 32 2.2365 2.4889 92.3 23.8 22.3
...
2018 09 16 05 11 14.4 -21 24 45 2.2037 2.5200 96.3 23.4 22.3
...
2018 09 24 05 11 25.7 -23 36 00 2.1624 2.5596 101.6 22.6 22.3
...
2018 10 09 05 06 09.5 -27 44 48 2.0982 2.6279 111.0 20.8 22.2
Gareth V. Williams (C) Copyright 2018 MPC M.P.E.C. 2018-R85
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