[Iaude] MPEC Y125: 2020 YA4 [a=1.45,e=0.33,i=4.2,H=26.6]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Fri Dec 25 11:01:46 EST 2020
M.P.E.C. 2020-Y125 Issued 2020 December 25, 16:00 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 at CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2020 YA4
Observations:
K20Y04A* C2020 12 23.50505412 22 28.31 +16 48 56.9 20.95GVEY125G96
K20Y04A C2020 12 23.51067712 22 22.49 +16 50 26.1 19.74GVEY125G96
K20Y04A C2020 12 23.51630112 22 16.50 +16 51 56.7 20.37GVEY125G96
K20Y04A C2020 12 23.52192112 22 10.60 +16 53 25.4 VEY125G96
K20Y04A KC2020 12 23.54015412 21 51.25 +16 58 13.3 19.81GVEY125V06
K20Y04A KC2020 12 23.54096712 21 50.39 +16 58 25.9 20.19GVEY125V06
K20Y04A KC2020 12 23.54178012 21 49.53 +16 58 38.9 20.21GVEY125V06
K20Y04A KC2020 12 23.54260512 21 48.65 +16 58 51.7 20.56GVEY125V06
K20Y04A mC2020 12 24.47467912 10 30.38 +20 23 43.1 21.10GVEY125G96
K20Y04A mC2020 12 24.47508512 10 30.02 +20 23 47.5 20.30GVEY125G96
K20Y04A mC2020 12 24.47549112 10 29.76 +20 23 52.3 20.52GVEY125G96
K20Y04A mC2020 12 24.47589712 10 29.36 +20 23 57.1 19.98GVEY125G96
K20Y04A KC2020 12 25.10493712 04 16.66 +22 07 54.8 20.7 GVEY125J95
K20Y04A KC2020 12 25.11311012 04 11.52 +22 09 14.6 19.9 GVEY125J95
K20Y04A KC2020 12 25.12164412 04 06.10 +22 10 37.3 20.5 GVEY125J95
K20Y04A KC2020 12 25.13023812 04 00.54 +22 11 59.7 20.8 GVEY125J95
K20Y04A KC2020 12 25.43297 12 01 18.98 +22 57 52.9 20.2 RqEY125H36
K20Y04A KC2020 12 25.44184 12 01 13.23 +22 59 09.6 20.4 RqEY125H36
K20Y04A KC2020 12 25.45064 12 01 07.59 +23 00 26.2 20.0 RqEY125H36
Observer details:
G96 Mt. Lemmon Survey. Observers D. Rankin, 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.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.41-m f/6.3 Schmidt-Cassegrain
+ CCD.
V06 Catalina Sky Survey-Kuiper. 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. 1.55-m reflector +
1K CCD.
Orbital elements:
2020 YA4 Earth MOID = 0.0028 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 5.65657 (2000.0) P Q
n 0.56735720 Peri. 344.21561 +0.28633190 -0.95534995
a 1.4451015 Node 89.10257 +0.88677245 +0.23540847
e 0.3283275 Incl. 4.18349 +0.36283420 +0.17857583
P 1.74 H 26.6 G 0.15 U 7
Residuals in seconds of arc
201223 G96 1.1- 0.4+ 201223 V06 0.2- 0.0 201225 J95 0.2+ 0.2+
201223 G96 0.6+ 0.5- 201224 G96 0.5+ 0.4+ 201225 J95 0.7- 0.1-
201223 G96 0.1- 0.4+ 201224 G96 0.1+ 0.0 201225 H36 0.4+ 0.1+
201223 G96 0.5+ 0.3- 201224 G96 1.0+ 0.1+ 201225 H36 0.0 0.4-
201223 V06 0.0 0.1- 201224 G96 0.0 0.1+ 201225 H36 0.8+ 0.2+
201223 V06 0.0 0.2- 201225 J95 0.2- 0.2-
201223 V06 0.0 0.1+ 201225 J95 0.2+ 0.1+
Ephemeris:
2020 YA4 a,e,i = 1.45, 0.33, 4 q = 0.9706
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 11 25 22 27 42.5 -40 52 59 0.07328 0.9783 81.0 94.8 24.3
...
2020 12 10 21 54 56.8 -45 49 40 0.02904 0.9712 61.3 117.2 23.5
...
2020 12 18 16 51 11.2 -48 00 33 0.0080540.9768 26.7 153.0 25.1
...
2020 12 24 12 15 43.7 +18 49 43 0.01661 0.9855 96.2 82.9 20.6
2020 12 25 12 04 59.8 +21 55 45 0.01941 0.9872 100.6 78.3 20.7
2020 12 26 11 56 40.0 +24 12 44 0.02227 0.9891 104.2 74.6 20.9
...
2021 01 01 11 29 33.9 +30 44 27 0.03995 1.0022 117.2 60.7 21.8
...
2021 01 09 11 12 03.9 +33 46 24 0.06383 1.0241 128.3 48.9 22.5
...
2021 01 24 10 45 51.9 +35 36 53 0.1108 1.0769 145.0 31.6 23.3
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-Y125
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