MPEC 2020-A07 : 2019 YY4
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M.P.E.C. 2020-A07 Issued 2020 January 1, 14:18 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 YY4
Observations:
K19Y04Y* C2019 12 30.48914 06 56 49.67 +27 02 26.7 VEA007V00
K19Y04Y C2019 12 30.49271 06 56 47.93 +27 01 17.8 20.1 GVEA007V00
K19Y04Y C2019 12 30.49965 06 56 44.53 +26 59 01.7 VEA007V00
K19Y04Y KC2019 12 30.55011 06 56 20.60 +26 42 42.9 20.2 RoEA007291
K19Y04Y KC2019 12 30.55201 06 56 19.72 +26 42 06.6 19.6 RoEA007291
K19Y04Y KC2019 12 30.55385 06 56 18.86 +26 41 30.9 19.5 RoEA007291
K19Y04Y C2019 12 30.84409 06 54 23.00 +25 12 03.0 20.0 VVEA007033
K19Y04Y C2019 12 30.84495 06 54 22.61 +25 11 47.7 20.0 VVEA007033
K19Y04Y C2019 12 30.84580 06 54 22.23 +25 11 32.7 19.9 VVEA007033
K19Y04Y C2019 12 30.84665 06 54 21.86 +25 11 17.9 20.1 VVEA007033
K19Y04Y KC2019 12 30.89427606 54 00.94 +24 57 24.0 20.0 GVEA007L01
K19Y04Y KC2019 12 30.89480606 54 00.69 +24 57 14.7 20.0 GVEA007L01
K19Y04Y KC2019 12 30.89586706 54 00.20 +24 56 55.9 20.1 GVEA007L01
K19Y04Y IC2019 12 30.89893106 53 58.83 +24 56 01.6 20.2 GVEA007L01
K19Y04Y pC2019 12 30.90174206 53 57.57 +24 55 12.0 20.0 GVEA007L01
K19Y04Y KC2019 12 30.97589 06 53 24.99 +24 33 34.2 20.0 GVEA007104
K19Y04Y KC2019 12 30.98007 06 53 23.27 +24 32 20.7 19.9 GVEA007104
K19Y04Y KC2019 12 31.00076 06 53 14.27 +24 26 17.6 VEA007204
K19Y04Y KC2019 12 31.01565 06 53 07.82 +24 21 58.7 20 GVEA007204
K19Y04Y KC2019 12 31.07925 06 52 49.08 +24 03 48.4 20.3 GVEA007W34
K19Y04Y KC2019 12 31.08775 06 52 45.55 +24 01 24.7 19.0 GVEA007W34
K19Y04Y KC2019 12 31.09764 06 52 41.47 +23 58 37.5 18.8 GVEA007W34
K19Y04Y KC2019 12 31.18829 06 52 06.39 +23 33 16.6 oEA007291
K19Y04Y KC2019 12 31.19175 06 52 05.00 +23 32 19.3 20.1 RoEA007291
K19Y04Y KC2019 12 31.19877 06 52 02.07 +23 30 23.4 oEA007291
K19Y04Y C2020 01 01.13401206 46 48.19 +19 33 19.6 20.2 GVEA007H01
K19Y04Y C2020 01 01.13571 06 46 38.89 +19 32 33.1 19.9 VVEA007033
K19Y04Y C2020 01 01.13684 06 46 38.58 +19 32 17.1 20.4 VVEA007033
K19Y04Y C2020 01 01.13799 06 46 38.18 +19 32 01.3 20.2 VVEA007033
K19Y04Y C2020 01 01.14338206 46 45.22 +19 31 11.6 20.3 GVEA007H01
K19Y04Y C2020 01 01.14784306 46 43.81 +19 30 10.7 20.1 GVEA007H01
K19Y04Y C2020 01 01.16308606 46 38.95 +19 26 43.1 20.2 GVEA007H01
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, U. Laux,
B. Stecklum, F. Ludwig. Measurer B. Stecklum. 1.34-m f/3 Schmidt + CCD.
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers P.
Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD.
204 Schiaparelli Observatory. Observer L. Buzzi. 0.84-m f/3.5 reflector + CCD.
291 LPL/Spacewatch II. Observers T. H. Bressi, D. T. Bressi. 1.8-m f/2.7
reflector + CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 Ritchey-Chretien + CCD.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector +
CCD.
V00 Kitt Peak-Bok. Observers A. R. Gibbs, H. Groeller, J. V. Scotti.
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. 2.25-m
reflector + CCD.
W34 Squirrel Valley Observatory, Columbus. Observer R. L. Flynn. 0.35-m
Schmidt-Cassegrain + CCD.
Orbital elements:
2019 YY4 Earth MOID = 0.0505 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5 Veres
M 85.77383 (2000.0) P Q
n 0.41874507 Peri. 103.43895 +0.85209518 -0.36906604
a 1.7694416 Node 279.26062 +0.19804344 +0.88369421
e 0.5644749 Incl. 22.08692 +0.48447146 +0.28787982
P 2.35 H 25.1 G 0.15 U 7
Residuals in seconds of arc
191230 V00 0.0 0.1- 191230 L01 0.1+ 0.1+ 191231 291 0.1- 0.2+
191230 V00 0.1+ 0.6+ 191230 L01 0.2- 0.0 191231 291 0.3+ 0.1+
191230 V00 0.2- 0.2- 191230 L01 0.2- 0.2- 191231 291 0.4- 0.2+
191230 291 0.0 0.5- 191230 L01 0.3- 0.3- 200101 H01 0.2+ 0.1+
191230 291 0.0 0.1- 191230 104 0.2- 0.2+ 200101 033 0.3- 0.0
191230 291 0.2- 0.3- 191230 104 1.5+ 0.4- 200101 033 0.3+ 0.3-
191230 033 0.4+ 0.5+ 191231 204 0.4- 0.2- 200101 033 0.3- 0.1-
191230 033 0.3+ 0.5+ 191231 204 0.1+ 0.5- 200101 H01 0.1+ 0.1+
191230 033 0.2+ 0.6+ 191231 W34 0.6- 0.0 200101 H01 0.2+ 0.1+
191230 033 0.3+ 0.9+ 191231 W34 0.6- 0.2- 200101 H01 0.1+ 0.1+
191230 L01 0.2+ 0.1+ 191231 W34 0.1- 0.7-
Ephemeris:
2019 YY4 a,e,i = 1.77, 0.56, 22 q = 0.7706
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2019 12 02 17 51 32.7 +23 45 47 0.2531 0.8447 49.7 117.1 26.4
...
2019 12 17 17 22 26.8 +43 13 39 0.1034 0.9478 66.6 107.6 24.1
...
2019 12 25 10 05 34.4 +71 01 27 0.05226 1.0123 122.1 55.4 20.7
...
2019 12 31 06 53 15.4 +24 27 25 0.07993 1.0631 176.3 3.5 20.1
2020 01 01 06 47 23.9 +20 05 26 0.08853 1.0717 176.8 2.9 20.3
2020 01 02 06 42 50.8 +16 30 39 0.09764 1.0803 173.4 6.0 20.7
...
2020 01 08 06 28 38.7 +04 28 27 0.1584 1.1327 159.1 18.0 22.3
...
2020 01 16 06 22 36.6 -01 23 36 0.2477 1.2033 149.3 24.7 23.6
...
2020 01 31 06 23 32.3 -04 10 46 0.4309 1.3352 137.6 29.8 25.2
A. U. Tomatic (C) Copyright 2020 MPC M.P.E.C. 2020-A07
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