MPEC 2020-E18 : 2017 RQ16
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M.P.E.C. 2020-E18 Issued 2020 March 6, 11:56 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
2017 RQ16
Revision to MPEC 2017-S66
Additional Observations:
K17R16Q C2020 03 05.20146 11 18 02.91 +28 40 04.0 21.1 GVEE018G96
K17R16Q C2020 03 05.20618 11 18 01.78 +28 39 57.0 20.6 GVEE018G96
K17R16Q C2020 03 05.21090 11 18 00.62 +28 39 50.5 20.4 GVEE018G96
K17R16Q C2020 03 05.21562 11 17 59.48 +28 39 43.1 21.0 GVEE018G96
K17R16Q C2020 03 05.30558 11 17 37.54 +28 37 29.1 20.2 GVEE018I52
K17R16Q C2020 03 05.30809 11 17 36.86 +28 37 25.4 20.6 GVEE018I52
K17R16Q C2020 03 05.31059 11 17 36.28 +28 37 21.7 20.5 GVEE018I52
K17R16Q C2020 03 05.43411 11 17 06.03 +28 34 12.9 20.5 GVEE018I52
K17R16Q C2020 03 05.43662 11 17 05.41 +28 34 08.8 21.0 GVEE018I52
K17R16Q C2020 03 05.43913 11 17 04.81 +28 34 05.1 20.8 GVEE018I52
K17R16Q C2020 03 05.44164 11 17 04.17 +28 34 01.1 21.0 GVEE018I52
K17R16Q C2020 03 06.18951 11 14 05.41 +28 14 32.7 VEE018G96
K17R16Q C2020 03 06.19090 11 14 04.95 +28 14 31.9 VEE018G96
K17R16Q C2020 03 06.19229 11 14 04.59 +28 14 29.3 21.1 GVEE018G96
K17R16Q C2020 03 06.19369 11 14 04.22 +28 14 27.4 20.6 GVEE018G96
K17R16Q C2020 03 06.20453 11 14 01.49 +28 14 10.5 21.5 GVEE018G96
K17R16Q C2020 03 06.20592 11 14 01.19 +28 14 07.6 20.6 GVEE018G96
K17R16Q C2020 03 06.20871 11 14 00.60 +28 14 03.5 20.6 GVEE018G96
Observer details:
G96 Mt. Lemmon Survey. Observer G. J. Leonard. Measurers 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, T. A. Pruyne, D. Rankin, R. L. Seaman,
F. C. Shelly, K. W. Wierzchos. 1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer T. A. Pruyne. Measurers
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, T. A. Pruyne, D.
Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.0-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
200305 G96 0.18- 0.27- 200306 G96 0.18- 0.28- MPO416662 -0.42 days
Orbital elements:
2017 RQ16 Earth MOID = 0.3522 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5 Veres
M 356.21633 (2000.0) P Q
n 0.30462108 Peri. 244.92391 -0.50829577 +0.85763513
a 2.1875740 Node 352.85107 -0.36758149 -0.29806209
e 0.4749308 Incl. 38.86251 -0.77879346 -0.41907157
P 3.24 H 20.3 G 0.15 U 4
Residuals in seconds of arc
170915 F51 0.2- 0.0 170918 291 0.3- 0.0 200305 I52 0.0 0.2+
170915 F51 0.1+ 0.1- 170923 H21 0.1+ 0.1- 200305 I52 0.1- 0.0
170915 F51 0.2+ 0.1+ 170923 H21 0.1+ 0.1- 200305 I52 0.1+ 0.2+
170916 568 0.1+ 0.2- 170923 H21 0.3+ 0.0 200305 I52 0.2- 0.1+
170916 568 0.2+ 0.3- 200305 G96 0.2- 0.2- 200306 G96 (2.0+ 1.2-)
170916 568 0.1+ 0.2- 200305 G96 0.0 0.2- 200306 G96 0.4+ 0.2+
170917 F51 0.3- 0.0 200305 G96 0.1- 0.2+ 200306 G96 0.2+ 0.2-
170917 F51 0.1+ 0.0 200305 G96 0.0 0.2- 200306 G96 0.1- 0.1+
170917 F51 0.2+ 0.2+ 200305 I52 0.4+ 0.0 200306 G96 0.8- 0.2+
170918 291 0.2- 0.4+ 200305 I52 0.4- 0.1+ 200306 G96 0.2- 0.5-
170918 291 0.5- 0.0 200305 I52 0.0 0.2+ 200306 G96 1.1+ 0.2-
Ephemeris:
2017 RQ16 a,e,i = 2.19, 0.47, 39 q = 1.1486
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 02 05 12 30 26.3 +33 21 32 0.8991 1.7234 132.2 25.1 22.4
...
2020 02 20 12 04 43.8 +32 20 50 0.7117 1.6294 146.3 19.7 21.6
...
2020 02 28 11 41 01.0 +30 46 45 0.6300 1.5795 153.5 16.2 21.2
...
2020 03 05 11 18 50.4 +28 45 09 0.5800 1.5425 157.0 14.5 20.9
2020 03 06 11 14 50.6 +28 19 39 0.5727 1.5363 157.3 14.4 20.8
2020 03 07 11 10 46.8 +27 52 33 0.5658 1.5302 157.4 14.4 20.8
...
2020 03 13 10 45 21.2 +24 35 18 0.5314 1.4938 155.5 16.0 20.7
...
2020 03 21 10 11 05.9 +18 45 22 0.5059 1.4462 146.8 22.2 20.7
...
2020 04 05 09 18 22.6 +05 32 02 0.5186 1.3617 124.3 37.4 21.1
A. U. Tomatic (C) Copyright 2020 MPC M.P.E.C. 2020-E18
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