MPEC 2021-X05 : 2021 WT4
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M.P.E.C. 2021-X05 Issued 2021 December 1, 02:14 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
2021 WT4
Observations:
K21W04T C2021 11 28.12922 02 08 03.34 +22 51 15.0 21.4 GVEX005G96
K21W04T C2021 11 28.13482 02 08 04.92 +22 50 35.1 21.4 GVEX005G96
K21W04T C2021 11 28.14042 02 08 06.46 +22 49 55.2 20.9 GVEX005G96
K21W04T* C2021 11 30.15138902 20 58.02 +18 06 45.4 20.99GVEX005G96
K21W04T C2021 11 30.15696502 21 00.01 +18 05 52.5 20.71GVEX005G96
K21W04T C2021 11 30.16254302 21 02.02 +18 04 58.5 20.32GVEX005G96
K21W04T C2021 11 30.16812302 21 03.97 +18 04 05.7 22.13GVEX005G96
K21W04T KC2021 11 30.27555102 21 42.60 +17 46 32.5 20.01GVEX005V06
K21W04T KC2021 11 30.27623402 21 42.84 +17 46 25.6 20.40GVEX005V06
K21W04T KC2021 11 30.27691602 21 43.10 +17 46 18.8 20.28GVEX005V06
K21W04T KC2021 11 30.27759802 21 43.34 +17 46 11.9 20.51GVEX005V06
K21W04T KC2021 11 30.83099 02 26 00.92 +16 10 52.8 20.9 GVEX005204
K21W04T HC2021 11 30.85063 02 26 08.87 +16 07 25.1 VEX005204
K21W04T KC2021 11 30.87474002 26 18.51 +16 03 06.8 20.6 GVEX005587
K21W04T KC2021 11 30.87653202 26 19.23 +16 02 48.6 20.5 GVEX005587
K21W04T bC2021 11 30.91774002 26 35.05 +15 55 24.4 20.5 GVEX005L01
K21W04T bC2021 11 30.93353702 26 41.49 +15 52 33.1 20.2 GVEX005L01
K21W04T bC2021 11 30.93977002 26 44.02 +15 51 25.1 20.4 GVEX005L01
K21W04T KC2021 12 01.03140002 27 40.04 +15 34 56.4 20.9 VuEX005H21
K21W04T KC2021 12 01.03979702 27 43.61 +15 33 25.2 20.9 VuEX005H21
K21W04T KC2021 12 01.04511202 27 45.84 +15 32 28.4 21.1 VuEX005H21
Observer details:
204 Schiaparelli Observatory. Observer L. Buzzi. 0.84-m f/3.5 reflector +
CCD.
587 Sormano. Observers E. Colzani, E. Valli, G. Ventre. Measurer P. Sicoli.
0.5-m f/6.8 reflector + CCD.
G96 Mt. Lemmon Survey. Observers G. J. Leonard, A. R. Gibbs. Measurers B.
Gray, D. Rankin, F. C. Shelly, 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, R. L. Seaman, K. W. Wierzchos. 1.5-m reflector +
10K CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers T. Linder, R. Holmes, L. Horn. 0.76-m f/3.0 astrograph + CCD.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
V06 Catalina Sky Survey-Kuiper. Observer D. Rankin. 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, D. Rankin, R. L.
Seaman, F. C. Shelly, K. W. Wierzchos. 1.55-m reflector + 1K CCD.
Orbital elements:
2021 WT4 Earth MOID = 0.0267 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5 Veres
M 12.87019 (2000.0) P Q
n 0.52767297 Peri. 210.17394 -0.13510577 -0.98359411
a 1.5166760 Node 247.81605 +0.93292847 -0.08564371
e 0.3502335 Incl. 7.41717 +0.33375275 -0.15876957
P 1.87 H 26.53 G 0.15 U 7
Residuals in seconds of arc
211128 G96 0.1+ 0.1- 211130 V06 0.2+ 0.0 211130 587 0.2+ 0.7+
211128 G96 0.2+ 0.0 211130 V06 0.1+ 0.0 211130 L01 0.2- 0.0
211128 G96 0.1- 0.3+ 211130 V06 0.2+ 0.1- 211130 L01 0.5- 0.8+
211130 G96 0.0 0.2- 211130 V06 0.1+ 0.2- 211130 L01 0.9- 0.9+
211130 G96 0.2- 0.2+ 211130 204 0.2- 0.2- 211201 H21 0.3+ 0.4-
211130 G96 0.2- 0.3- 211130 204 0.1+ 0.5+ 211201 H21 0.5+ 1.1-
211130 G96 0.9- 0.4+ 211130 587 0.2+ 0.3- 211201 H21 0.4+ 0.5-
Ephemeris:
2021 WT4 a,e,i = 1.52, 0.35, 7 q = 0.9855
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 11 01 01 24 13.2 +39 19 51 0.1562 1.1326 151.7 24.5 23.9
...
2021 11 16 01 30 41.0 +35 42 05 0.09292 1.0702 149.6 27.8 22.8
...
2021 11 24 01 49 14.4 +29 21 22 0.06319 1.0423 149.6 28.6 21.9
...
2021 11 30 02 19 48.5 +18 31 56 0.04355 1.0246 150.8 28.0 21.0
2021 12 01 02 27 16.7 +15 42 28 0.04068 1.0219 150.9 28.0 20.9
2021 12 02 02 35 40.7 +12 27 21 0.03799 1.0193 150.7 28.3 20.7
...
2021 12 08 03 53 31.3 -17 47 00 0.02794 1.0056 136.5 42.4 20.4
...
2021 12 16 06 59 55.6 -52 38 58 0.03804 0.9926 101.8 76.1 22.1
...
2021 12 31 10 13 43.1 -55 13 19 0.08348 0.9861 89.4 85.7 24.1
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-X05
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