MPEC 2020-X157 : 2020 XY4
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M.P.E.C. 2020-X157 Issued 2020 December 14, 04:29 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
2020 XY4
Observations:
K20X04Y* C2020 12 11.57254107 21 18.557+22 46 19.06 21.60wUEX157F52
K20X04Y C2020 12 11.58481007 21 16.056+22 46 08.17 21.91GVEX157F52
K20X04Y C2020 12 11.59710607 21 13.599+22 45 57.14 22.22wUEX157F52
K20X04Y C2020 12 11.60943607 21 11.105+22 45 44.97 20.97wUEX157F52
K20X04Y !C2020 12 12.17513807 19 51.02 +22 38 06.3 21.4 GVEX157J04
K20X04Y !C2020 12 12.19070207 19 47.50 +22 37 51.1 21.2 GVEX157J04
K20X04Y C2020 12 12.42707207 19 19.803+22 34 47.18 21.15GVEX157F51
K20X04Y C2020 12 12.44206507 19 16.256+22 34 36.89 21.40GVEX157F51
K20X04Y C2020 12 12.47204307 19 08.977+22 34 14.47 21.32GVEX157F51
K20X04Y KC2020 12 12.97645207 17 37.55 +22 24 50.8 20.8 GVEX157L01
K20X04Y KC2020 12 12.97880807 17 36.95 +22 24 49.0 20.7 GVEX157L01
K20X04Y KC2020 12 12.98122207 17 36.35 +22 24 46.8 20.8 GVEX157L01
K20X04Y KC2020 12 12.98374707 17 35.65 +22 24 44.4 20.6 GVEX157L01
K20X04Y KC2020 12 13.53174 07 15 26.00 +22 15 03.8 18.5 RoEX157691
K20X04Y KC2020 12 13.54089 07 15 23.48 +22 14 49.7 20.3 RoEX157691
K20X04Y 1C2020 12 13.88356 07 14 20.20 +22 06 43.6 20.9 VVEX157033
K20X04Y 1C2020 12 13.98128 07 13 50.33 +22 04 53.0 21.0 VVEX157033
K20X04Y 1C2020 12 13.98336 07 13 49.65 +22 04 50.3 20.2 VVEX157033
K20X04Y KC2020 12 14.01887 07 13 38.86 +22 04 22.3 20.8 GVEX157204
K20X04Y HC2020 12 14.04342 07 13 30.61 +22 03 49.9 VEX157204
K20X04Y 2C2020 12 14.04442007 13 36.448+22 04 47.36 20.8 GVEX157J04
K20X04Y 2C2020 12 14.04605007 13 35.896+22 04 46.30 20.5 GVEX157J04
K20X04Y 2C2020 12 14.04768007 13 35.317+22 04 44.12 19.9 GVEX157J04
K20X04Y KC2020 12 14.14849207 12 54.60 +22 01 16.3 20.3 GVEX157104
K20X04Y KC2020 12 14.15874107 12 51.14 +22 00 58.1 20.1 GVEX157104
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, C.
Hoegner, B. Stecklum. 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.
691 Steward Observatory, Kitt Peak-Spacewatch. Observer M. J. Brucker. 0.9-m
f/3 reflector + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, M. Willman. Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, T. Dukes, T. Lowe, A.
Schultz, M. Willman, K. Chambers. Measurers K. Chambers, S. Chastel, T.
de Boer, L. Denneau, J. Fairlamb, H. Flewelling, M. Huber, C.-C. Lin, E.
Magnier, Y. Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien +
CCD.
J04 ESA Optical Ground Station, Tenerife. Observers D. Abreu, P. Ruiz.
Measurers R. Kresken, M. Micheli, D. Koschny, L. Conversi, A. Knofel, M.
Busch, E. Schwab. 1.0-m f/4.4 reflector + CCD.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, D. Pujagic. Measurer
D. Pujagic. 1.0-m f/2.9 reflector + CCD.
Orbital elements:
2020 XY4 Earth MOID = 0.0025 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 258.43391 (2000.0) P Q
n 1.23921389 Peri. 318.82418 -0.75064639 +0.66036148
a 0.8584306 Node 262.51638 -0.60042554 -0.69524702
e 0.3518171 Incl. 1.22966 -0.27571574 -0.28382088
P 0.80 H 26.8 G 0.15 U 8
Residuals in seconds of arc
201211 F52 0.5+ 0.2+ 201212 L01 0.5+ 0.4- 201214 204 0.1- 0.2-
201211 F52 0.1+ 0.1+ 201212 L01 0.5+ 0.1- 201214 204 0.2- 0.1+
201211 F52 0.2+ 0.2+ 201212 L01 0.7+ 0.1- 201214 J04 0.0 0.4-
201211 F52 0.6- 0.4- 201212 L01 0.1- 0.2- 201214 J04 0.2+ 0.4+
201212 J04 0.1+ 0.1+ 201213 691 0.3- 0.2+ 201214 J04 0.0 0.2+
201212 J04 0.0 0.1+ 201213 691 0.1- 0.2+ 201214 104 0.6+ 0.4+
201212 F51 0.2- 0.0 201213 033 0.1+ 0.2+ 201214 104 0.1- 0.6-
201212 F51 0.1- 0.0 201213 033 0.3- 0.0
201212 F51 0.1+ 0.0 201213 033 0.4- 0.1-
Ephemeris:
2020 XY4 a,e,i = 0.86, 0.35, 1 q = 0.5564
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 11 14 07 18 32.8 +24 35 23 0.2166 1.1248 123.9 46.9 25.5
...
2020 11 29 07 28 35.4 +23 57 07 0.1253 1.0810 136.7 38.7 24.0
...
2020 12 07 07 27 28.8 +23 24 18 0.07861 1.0505 145.0 32.5 22.8
...
2020 12 13 07 17 29.2 +22 25 48 0.04459 1.0245 153.3 25.6 21.3
2020 12 14 07 13 42.0 +22 06 20 0.03900 1.0199 155.1 23.9 20.9
2020 12 15 07 08 34.7 +21 40 05 0.03346 1.0152 157.3 22.0 20.5
...
2020 12 21 01 57 34.1 -16 11 55 0.0052980.9855 109.4 70.3 17.9
...
2020 12 29 20 11 42.7 -25 58 22 0.04518 0.9418 22.7 156.2 29.8
...
2021 01 13 19 48 04.4 -24 46 02 0.1348 0.8492 4.0 175.4
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-X157
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