MPEC 2019-U15 : 2018 RR7
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M.P.E.C. 2019-U15 Issued 2019 October 17, 16:56 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 RR7
Revision to MPEC 2018-S6
Additional Observations:
K18R07R C2017 02 04.53721809 42 58.075+20 45 30.11 23.0 GVEU015F51
K18R07R C2017 02 04.54972209 42 56.934+20 45 37.45 22.1 GVEU015F51
K18R07R C2017 02 04.56225709 42 55.776+20 45 46.05 23.5 GVEU015F51
K18R07R C2017 02 05.38300309 41 42.495+20 54 32.82 22.3 GVEU015F51
K18R07R C2017 02 22.34743709 17 22.004+23 23 11.55 22.8 GVEU015F51
K18R07R C2017 02 22.36133709 17 20.931+23 23 16.87 23.4 GVEU015F51
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, E.
Magnier, A. Schultz, M. Willman. Measurers S. Chastel, M. Huber, Y.
Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
170204 F51 20.1+ 4.9+ 170222 F51 20.1+ 4.4+ MPO473499 +0.00 days
Orbital elements:
2018 RR7 Earth MOID = 0.1312 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5 Veres
M 104.64213 (2000.0) P Q
n 0.43863007 Peri. 248.44836 +0.99188778 +0.05262106
a 1.7155516 Node 108.38602 -0.00756086 +0.93310632
e 0.3697581 Incl. 7.00398 -0.12689159 +0.35572969
P 2.25 H 20.8 G 0.15 U 1
Residuals in seconds of arc
170204 F51 0.2- 0.2+ 180913 I52 0.8- 0.3- 181115 T12 0.0 0.1+
170204 F51 0.1+ 0.4- 180914 I52 0.0 0.6- 181115 T12 0.0 0.0
170204 F51 0.1+ 0.2+ 180914 I52 0.2+ 0.0 181115 T12 0.0 0.0
170205 F51 0.2- 0.2+ 180914 I52 0.0 0.5+ 181117 691 0.4- 0.3+
170222 F51 0.1- 0.0 180916 L01 0.7+ 1.1+ 181117 691 0.1- 0.3-
170222 F51 0.3+ 0.2- 180916 L01 0.1- 0.1+ 181117 691 0.0 0.2+
180912 G96 0.6+ 0.3- 181010 K88 0.1- 0.3+ 181204 G96 0.2+ 0.1+
180912 G96 0.1- 0.5+ 181010 K88 0.1- 0.2+ 181204 G96 0.2+ 0.1+
180912 G96 0.1- 0.1+ 181010 K88 0.1+ 0.4+ 181204 G96 1.2- 1.3-
180912 G96 0.2+ 0.5+ 181010 T12 0.0 0.0 181204 G96 0.4- 0.0
180912 I52 0.2+ 0.3+ 181010 T12 0.0 0.0 181217 H21 0.1- 0.3+
180912 I52 0.1- 0.2- 181105 807 0.0 0.1+ 181217 H21 0.1- 0.3-
180912 I52 0.1- 0.1+ 181105 807 0.1+ 0.2+ 181231 691 0.1- 0.1+
180912 G96 0.0 0.1- 181105 807 0.0 0.2- 181231 691 0.6- 0.2+
180912 G96 0.6- 0.5+ 181106 J04 0.1- 0.2- 181231 691 0.2- 0.2+
180913 I52 0.6- 0.1- 181106 J04 0.2- 0.2+
180913 I52 0.7+ 0.0 181106 J04 0.1- 0.2+
Ephemeris:
2018 RR7 a,e,i = 1.72, 0.37, 7 q = 1.0812
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2019 09 17 11 35 03.2 +07 24 55 3.3418 2.3416 4.9 2.1 25.5
...
2019 10 02 11 59 56.4 +04 54 28 3.3222 2.3480 11.1 4.7 25.7
...
2019 10 10 12 13 07.3 +03 35 01 3.2985 2.3495 15.2 6.4 25.7
...
2019 10 16 12 22 58.1 +02 36 07 3.2747 2.3499 18.4 7.7 25.8
2019 10 17 12 24 36.4 +02 26 23 3.2703 2.3498 18.9 7.9 25.8
2019 10 18 12 26 14.7 +02 16 39 3.2657 2.3498 19.5 8.1 25.8
...
2019 10 24 12 36 03.2 +01 18 48 3.2351 2.3492 22.7 9.4 25.8
...
2019 11 01 12 49 05.2 +00 03 16 3.1865 2.3472 27.1 11.1 25.9
...
2019 11 16 13 13 20.8 -02 11 59 3.0722 2.3402 35.6 14.3 25.9
A. U. Tomatic (C) Copyright 2019 MPC M.P.E.C. 2019-U15
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