MPEC 2020-Y138 : 2020 YM4
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M.P.E.C. 2020-Y138 Issued 2020 December 27, 02:28 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 YM4
Observations:
K20Y04M C2020 12 23.53105 14 22 14.26 +46 44 07.4 19.0 GVEY138703
K20Y04M* C2020 12 26.38679111 10 49.76 +24 18 44.8 19.07GVEY138G96
K20Y04M C2020 12 26.39705811 10 31.69 +24 15 23.0 18.72GVEY138G96
K20Y04M KC2020 12 26.41662911 09 45.34 +24 08 24.8 18.4 VuEY138H21
K20Y04M KC2020 12 26.41697411 09 56.75 +24 08 52.8 18.56GVEY138I52
K20Y04M KC2020 12 26.41771511 09 55.44 +24 08 38.1 19.02GVEY138I52
K20Y04M KC2020 12 26.41845511 09 54.14 +24 08 23.6 18.61GVEY138I52
K20Y04M KC2020 12 26.41867111 09 41.72 +24 07 43.7 18.8 VuEY138H21
K20Y04M KC2020 12 26.41919411 09 52.84 +24 08 09.2 18.99GVEY138I52
K20Y04M KC2020 12 26.42071311 09 38.12 +24 07 02.7 19.2 VuEY138H21
K20Y04M KC2020 12 26.42239 11 09 38.97 +24 06 30.0 19.1 RqEY138H36
K20Y04M KC2020 12 26.42791 11 09 29.31 +24 04 40.7 19.0 RqEY138H36
K20Y04M KC2020 12 26.43458 11 09 17.59 +24 02 26.8 19.4 RqEY138H36
K20Y04M KC2020 12 26.50987811 07 15.19 +23 38 30.6 19.07GVEY138I52
K20Y04M KC2020 12 26.51061911 07 13.91 +23 38 16.1 18.45GVEY138I52
K20Y04M KC2020 12 26.51135911 07 12.64 +23 38 01.6 19.00GVEY138I52
K20Y04M KC2020 12 26.51210011 07 11.37 +23 37 47.2 18.97GVEY138I52
K20Y04M bC2020 12 26.95207810 57 32.08 +21 21 38.9 19.8 GVEY138L01
K20Y04M bC2020 12 26.95377910 57 29.92 +21 21 11.7 19.7 GVEY138L01
K20Y04M bC2020 12 26.95811210 57 24.25 +21 20 02.3 19.5 GVEY138L01
K20Y04M bC2020 12 26.95956910 57 22.40 +21 19 38.7 19.6 GVEY138L01
K20Y04M bC2020 12 26.96232910 57 18.85 +21 18 54.7 19.8 GVEY138L01
K20Y04M KC2020 12 26.98369 10 56 51.01 +21 13 09.1 19.6 GVEY138595
K20Y04M IC2020 12 27.00433 10 56 24.21 +21 07 40.0 19.5 GVEY138595
K20Y04M KC2020 12 27.04205110 55 36.49 +20 57 38.6 19.4 GVEY138203
K20Y04M KC2020 12 27.05865010 55 14.90 +20 53 16.8 19.2 GVEY138203
K20Y04M KC2020 12 27.07294210 54 56.31 +20 49 32.4 19.0 GVEY138203
Observer details:
203 GiaGa Observatory. Observers S. Foglia, G. Galli. Measurer G. Galli.
0.36-m f/5.76 Schmidt-Cassegrain + CCD.
595 Farra d'Isonzo. Observer E. Pettarin. 0.40-m f/5.15 reflector + CCD.
703 Catalina Sky Survey. Observer H. Groeller. Measurers D. Rankin, B. Gray,
F. C. Shelly. 1.5-m reflector + 10K CCD.
G96 Mt. Lemmon Survey. 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. 1.5-m reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.76-m f/3.0
astrograph + CCD.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer K. W. Wierzchos.
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.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
Orbital elements:
2020 YM4 Earth MOID = 0.0076 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 4.34886 (2000.0) P Q
n 0.40632070 Peri. 149.60506 +0.33005997 -0.94236424
a 1.8053306 Node 281.07538 +0.85442603 +0.32295574
e 0.4675736 Incl. 3.20480 +0.40126870 +0.08745990
P 2.43 H 25.9 G 0.15 U 6
Residuals in seconds of arc
201223 703 0.0 0.1- 201226 H21 0.2+ 0.3+ 201226 L01 0.5+ 0.1+
201226 G96 0.2- 0.1- 201226 H36 0.6- 0.1- 201226 L01 0.6- 0.2+
201226 G96 0.6- 0.4- 201226 H36 0.0 0.4+ 201226 L01 0.2- 0.1-
201226 H21 0.4+ 0.5+ 201226 H36 0.2- 0.7- 201226 L01 0.0 0.1+
201226 I52 0.1+ 0.2+ 201226 I52 0.2+ 0.0 201226 595 0.0 0.1+
201226 I52 0.0 0.0 201226 I52 0.0 0.0 201227 595 0.2+ 0.4-
201226 I52 0.0 0.1+ 201226 I52 0.1- 0.1+ 201227 203 0.6+ 0.3-
201226 H21 0.2+ 0.3+ 201226 I52 0.1- 0.2+ 201227 203 0.2+ 0.5-
201226 I52 0.0 0.1+ 201226 L01 0.1+ 0.0 201227 203 0.1- 0.1-
Ephemeris:
2020 YM4 a,e,i = 1.81, 0.47, 3 q = 0.9612
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 11 27 21 08 39.9 +03 57 52 0.1089 0.9677 76.8 96.9 24.5
...
2020 12 12 20 55 28.7 +10 04 31 0.04798 0.9636 62.9 114.6 23.7
...
2020 12 20 19 39 20.1 +28 20 35 0.01658 0.9751 57.8 121.4 21.9
...
2020 12 26 11 21 54.4 +26 41 54 0.01591 0.9896 112.4 66.8 19.2
2020 12 27 10 56 12.3 +21 13 00 0.01937 0.9925 117.5 61.5 19.5
2020 12 28 10 39 35.2 +17 18 45 0.02308 0.9955 121.1 57.7 19.8
...
2021 01 03 09 59 54.1 +07 25 05 0.04725 1.0160 132.9 45.1 21.0
...
2021 01 11 09 42 20.2 +03 58 46 0.08108 1.0495 143.2 34.2 22.0
...
2021 01 26 09 24 36.7 +03 11 57 0.1505 1.1271 160.0 17.4 23.0
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-Y138
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