[Iaude] MPEC J157: 2017 QN18 [a=2.14,e=0.83,i=6.7,H=20.36]
mpec at cfa.harvard.edu
mpec at cfa.harvard.edu
Wed May 8 10:13:01 EDT 2024
M.P.E.C. 2024-J157 Issued 2024 May 8, 14:11 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets, routine data on comets and natural satellites,
and occasional editorial announcements. 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 at CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2017 QN18
Revision to MPEC 2017-Q140
Additional Observations:
K17Q18N KC2024 05 06.60258415 59 45.619-33 08 17.77 20.8 GVEJ157474
K17Q18N KC2024 05 06.60498715 59 45.034-33 08 15.32 21.6 GVEJ157474
K17Q18N KC2024 05 06.61459715 59 42.684-33 08 04.88 21.2 GVEJ157474
K17Q18N KC2024 05 06.61700015 59 42.043-33 08 02.04 21.4 GVEJ157474
K17Q18N KC2024 05 06.61916215 59 41.474-33 07 58.94 20.9 GVEJ157474
K17Q18N KC2024 05 07.35095815 56 46.799-32 55 12.01 VEJ157I52
K17Q18N KC2024 05 07.35521815 56 45.714-32 55 06.91 21.4 GVEJ157I52
K17Q18N KC2024 05 07.35908215 56 44.787-32 55 02.56 VEJ157I52
Observer details:
474 Mount John Observatory, Lake Tekapo. Observers A. C. Gilmore, P. M.
Kilmartin. Measurer P. M. Kilmartin. 1.0-m f/7.7 Reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer D. Rankin. Measurers
D. Rankin, D. Parrott. 1.00-m f/2.0 prime focus + CCD + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
240506 474 45.0+ 10.9+ 240507 I52 46.3+ 9.4+ E2024-E02 +0.02 days
Orbital elements:
2017 QN18 Earth MOID = 0.1039 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5 Veres
M 16.36997 (2000.0) P Q
n 0.31471844 Peri. 176.55897 -0.12158064 -0.98588622
a 2.1405297 Node 280.40096 +0.90785920 -0.06357761
e 0.8334552 Incl. 6.71993 +0.40126028 -0.15487495
P 3.13 H 20.36 G 0.15 U 2
Residuals in seconds of arc
170729 F51 0.2- 0.1- 170828 H01 0.0 0.2- 170830 H21 0.1- 0.1+
170729 F51 0.2+ 0.1- 170828 H01 0.1- 0.2- 170830 H21 0.0 0.3-
170729 F51 0.1+ 0.0 170828 H01 0.1- 0.2- 170908 G40 0.2+ 0.1+
170821 F51 0.3- 0.1+ 170828 E23 0.1+ 1.7+ 170908 G40 0.5- 0.2-
170827 T08 0.5+ 1.1- 170828 E23 0.5+ 0.8+ 170915 807 0.2- 0.1-
170827 T08 0.2+ 0.2+ 170828 Q62 0.1+ 0.4+ 170915 807 0.1+ 0.0
170827 T08 0.6- 1.3- 170828 Q62 0.4- 0.1+ 170915 807 0.2+ 0.2-
170827 T08 0.8+ 0.1+ 170828 E23 0.5+ 0.2- 240506 474 0.0 0.0
170827 J95 0.3+ 0.4- 170828 Q62 0.3+ 0.3- 240506 474 0.1+ 0.1-
170827 J95 0.6+ 0.1+ 170829 T05 0.6+ 0.5- 240506 474 0.3+ 0.0
170828 J95 0.0 0.1+ 170829 T05 0.4- 0.1- 240506 474 0.4- 0.3+
170828 J95 0.1- 0.3- 170829 T05 0.4- 0.2+ 240506 474 0.8- 1.0+
170828 734 1.3- 0.7+ 170829 T05 0.4- 0.1+ 240507 I52 1.0+ 1.3-
170828 734 0.5- 0.0 170830 H21 0.1+ 0.1- 240507 I52 0.3+ 0.8-
170828 734 0.3- 0.1- 170830 H21 0.0 0.3- 240507 I52 0.5+ 0.6-
170828 H01 0.1- 0.1- 170830 H21 0.0 0.1-
Ephemeris:
2017 QN18 a,e,i = 2.14, 0.83, 7 q = 0.3565
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2024 04 08 18 13 02.4 -36 40 56 0.5456 1.2597 105.2 50.1 21.4
...
2024 04 23 17 01 40.0 -36 14 50 0.5812 1.4673 133.5 29.8 21.3
...
2024 05 01 16 23 45.3 -34 40 21 0.6213 1.5709 148.4 19.6 21.3
...
2024 05 07 15 58 10.5 -33 01 17 0.6642 1.6456 158.6 12.9 21.3
2024 05 08 15 54 14.4 -32 43 16 0.6725 1.6578 160.2 11.9 21.3
2024 05 09 15 50 24.6 -32 24 57 0.6811 1.6699 161.7 11.0 21.3
...
2024 05 15 15 29 41.7 -30 31 55 0.7395 1.7415 168.3 6.8 21.4
...
2024 05 23 15 08 09.8 -28 04 56 0.8346 1.8335 166.1 7.6 21.8
...
2024 06 07 14 43 56.1 -24 21 43 1.0587 1.9964 148.6 15.3 22.8
A. U. Tomatic (C) Copyright 2024 MPC M.P.E.C. 2024-J157
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