MPEC 2020-A01 : 2019 YR4
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M.P.E.C. 2020-A01 Issued 2020 January 1, 03:27 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
2019 YR4
Observations:
K19Y04R C2019 11 28.53704808 40 47.542+25 00 51.75 20.0 GVEA001F52
K19Y04R C2019 11 28.55336808 40 47.969+25 01 02.64 21.8 GVEA001F52
K19Y04R C2019 11 28.56681308 40 48.311+25 01 11.84 22.0 GVEA001F52
K19Y04R C2019 12 03.52532908 42 30.384+26 00 00.06 21.7 GVEA001F52
K19Y04R C2019 12 03.53725508 42 30.535+26 00 09.43 22.0 GVEA001F52
K19Y04R C2019 12 03.54928008 42 30.716+26 00 18.78 22.2 GVEA001F52
K19Y04R C2019 12 03.56142508 42 30.826+26 00 28.19 21.8 GVEA001F52
K19Y04R* C2019 12 30.51549908 33 29.280+34 55 47.02 20.54wUEA001F52
K19Y04R C2019 12 30.52833408 33 28.348+34 56 08.22 20.68wUEA001F52
K19Y04R C2019 12 30.54100208 33 27.430+34 56 29.02 20.79wUEA001F52
K19Y04R C2019 12 30.55364808 33 26.519+34 56 49.86 20.97wUEA001F52
K19Y04R C2019 12 30.94228 08 33 00.02 +35 07 29.9 20.1 VVEA001033
K19Y04R C2019 12 30.94482 08 32 59.84 +35 07 34.3 19.8 VVEA001033
K19Y04R C2019 12 30.94734 08 32 59.64 +35 07 38.5 19.7 VVEA001033
K19Y04R KC2019 12 31.20470 08 32 41.74 +35 14 50.7 19.9 RoEA001291
K19Y04R KC2019 12 31.20735 08 32 41.58 +35 14 54.4 20.8 RoEA001291
K19Y04R KC2019 12 31.21001 08 32 41.37 +35 14 59.6 oEA001291
K19Y04R KC2019 12 31.96818908 31 45.49 +35 36 20.7 20.6 GVEA001L01
K19Y04R KC2019 12 31.97449108 31 45.00 +35 36 31.0 20.5 GVEA001L01
K19Y04R KC2019 12 31.98078808 31 44.52 +35 36 41.5 20.6 GVEA001L01
K19Y04R KC2020 01 01.01613 08 31 41.66 +35 37 42.6 20.0 RoEA001K88
K19Y04R KC2020 01 01.02317 08 31 41.12 +35 37 54.4 19.6 RoEA001K88
K19Y04R KC2020 01 01.03021 08 31 40.54 +35 38 06.1 19.9 RoEA001K88
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, F.
Ludwig, B. Stecklum. Measurer B. Stecklum. 1.34-m f/3 Schmidt + CCD.
291 LPL/Spacewatch II. Observer T. H. Bressi. 1.8-m f/2.7 reflector + CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, K. Chambers, T. Dukes, T.
Lowe, A. Schultz, M. Willman. Measurers S. Chastel, M. Huber, Y.
Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers, T. de Boer, L. Denneau, J.
Fairlamb, H. Flewelling, C.-C. Lin, E. Magnier. 1.8-m Ritchey-Chretien +
CCD.
K88 GINOP-KHK, Piszkesteto. Observer K. Sarneczky. 1.02-m Ritchey-Chretien
+ CCD.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, D. Marusic. Measurer
K. Korlevic. 1.0-m f/2.9 reflector + CCD.
Orbital elements:
2019 YR4 Earth MOID = 0.2874 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5 Bell
M 6.47338 (2000.0) P Q
n 0.35009654 Peri. 147.77129 -0.42458220 +0.78842489
a 1.9937812 Node 93.51455 -0.89610895 -0.29573325
e 0.6806495 Incl. 26.48357 -0.12930085 -0.53937745
P 2.82 H 18.4 G 0.15 U 6
Residuals in seconds of arc
191128 F52 0.7- 0.4- 191230 F52 0.0 0.0 191231 291 0.1+ 0.3+
191128 F52 0.0 0.2- 191230 F52 0.0 0.1- 191231 L01 0.1+ 0.3+
191128 F52 0.6+ 0.2+ 191230 F52 0.1+ 0.1- 191231 L01 0.1+ 0.2-
191203 F52 0.2+ 0.1+ 191230 033 0.2- 0.5- 191231 L01 0.3+ 0.5-
191203 F52 0.1+ 0.2+ 191230 033 0.1- 0.3- 200101 K88 0.1- 0.6+
191203 F52 0.3+ 0.2+ 191230 033 0.4- 0.4- 200101 K88 0.1+ 0.4+
191203 F52 0.4- 0.1+ 191231 291 0.1- 0.5+ 200101 K88 0.2- 0.1+
191230 F52 0.0 0.0 191231 291 0.3+ 0.3-
Ephemeris:
2019 YR4 a,e,i = 1.99, 0.68, 26 q = 0.6367
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2019 12 02 08 42 03.6 +25 40 50 1.4269 2.1286 122.8 22.9 21.9
...
2019 12 17 08 42 40.0 +29 36 56 1.1667 2.0090 138.0 19.1 21.2
...
2019 12 25 08 38 38.7 +32 32 34 1.0449 1.9420 146.4 16.3 20.8
...
2019 12 31 08 32 55.7 +35 09 09 0.9636 1.8903 152.3 14.0 20.5
2020 01 01 08 31 42.9 +35 37 15 0.9509 1.8816 153.2 13.6 20.4
2020 01 02 08 30 25.3 +36 05 54 0.9386 1.8728 154.1 13.3 20.4
...
2020 01 08 08 20 50.5 +39 08 16 0.8704 1.8194 157.9 11.7 20.1
...
2020 01 16 08 02 36.7 +43 30 54 0.7967 1.7461 157.4 12.5 19.9
...
2020 01 31 07 09 55.9 +51 20 10 0.7127 1.6022 140.8 22.8 19.8
(Last issue was M.P.E.C. 2019-Y138)
A. U. Tomatic (C) Copyright 2020 MPC M.P.E.C. 2020-A01
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