MPEC 2020-H135 : 2020 HW4
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M.P.E.C. 2020-H135 Issued 2020 April 24, 00:21 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 HW4
Observations:
K20H04W C2020 03 22.43411814 00 40.834+23 43 40.27 22.0 GVEH135F51
K20H04W C2020 03 22.44676814 00 42.552+23 43 58.03 22.8 GVEH135F51
K20H04W C2020 03 22.45946514 00 44.220+23 44 15.15 VEH135F51
K20H04W* C2020 04 22.41033415 43 57.953+32 07 45.35 21.16wUEH135F52
K20H04W C2020 04 22.42141215 44 00.701+32 07 47.06 21.12wUEH135F52
K20H04W C2020 04 22.43247715 44 03.444+32 07 48.85 21.25wUEH135F52
K20H04W C2020 04 23.04026 15 46 44.41 +32 08 05.4 21.4 VVEH135033
K20H04W C2020 04 23.04385 15 46 45.32 +32 08 05.2 21.3 VVEH135033
K20H04W C2020 04 23.04743 15 46 46.26 +32 08 05.5 21.2 VVEH135033
K20H04W bC2020 04 23.05383415 46 47.76 +32 08 09.5 21.7 GVEH135L01
K20H04W bC2020 04 23.05540515 46 48.14 +32 08 09.7 21.4 GVEH135L01
K20H04W bC2020 04 23.05854115 46 48.92 +32 08 09.5 21.5 GVEH135L01
K20H04W IC2020 04 23.06088815 46 49.54 +32 08 09.0 21.5 GVEH135L01
K20H04W C2020 04 23.30907 15 47 58.04 +32 08 24.1 VEH135I52
K20H04W C2020 04 23.31199 15 47 58.78 +32 08 23.3 21.1 GVEH135I52
K20H04W C2020 04 23.31491 15 47 59.51 +32 08 23.4 21.5 GVEH135I52
K20H04W C2020 04 23.31783 15 48 00.30 +32 08 21.8 20.5 GVEH135I52
K20H04W !C2020 04 23.40382 15 48 22.21 +32 08 23.4 21.4 RtEH135673
K20H04W !C2020 04 23.42781 15 48 28.25 +32 08 23.2 tEH135673
K20H04W C2020 04 23.90850 15 50 40.81 +32 07 51.0 20.6 VVEH135033
K20H04W C2020 04 23.91208 15 50 41.75 +32 07 51.1 20.5 VVEH135033
K20H04W C2020 04 23.91566 15 50 42.67 +32 07 51.1 20.6 VVEH135033
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, C.
Hoegner, B. Stecklum. Measurer B. Stecklum. 1.34-m f/3 Schmidt + CCD.
673 Table Mountain Observatory, Wrightwood. Observer J. Pittichova. 1.0-m
f/15 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. 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.
I52 Steward Observatory, Mt. Lemmon Station. Observer H. Groeller. 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 HW4 Earth MOID = 0.1349 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5 Veres
M 4.76558 (2000.0) P Q
n 0.27973460 Peri. 132.29842 -0.56069537 +0.81682950
a 2.3154670 Node 103.11016 -0.79477867 -0.48494418
e 0.5209182 Incl. 8.00825 -0.23226617 -0.31243994
P 3.52 H 23.1 G 0.15 U 6
Residuals in seconds of arc
200322 F51 0.0 0.0 200423 033 0.4+ 0.1+ 200423 I52 (0.4+ 1.7-)
200322 F51 0.2+ 0.2+ 200423 L01 0.3+ 0.3- 200423 673 0.1- 0.1-
200322 F51 0.3- 0.2- 200423 L01 0.0 0.2- 200423 673 0.0 0.1+
200422 F52 0.1- 0.2+ 200423 L01 0.1- 0.4- 200423 033 0.1+ 0.0
200422 F52 0.1- 0.1+ 200423 L01 0.2+ 0.9- 200423 033 0.1+ 0.0
200422 F52 0.0 0.1+ 200423 I52 0.3- 1.1+ 200423 033 0.1- 0.0
200423 033 0.1+ 0.2+ 200423 I52 0.2- 0.1+
200423 033 0.0 0.1- 200423 I52 0.3- 0.1+
Ephemeris:
2020 HW4 a,e,i = 2.32, 0.52, 8 q = 1.1093
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 03 25 14 07 00.4 +24 41 40 0.3022 1.2502 142.3 29.2 22.3
...
2020 04 09 14 51 09.5 +29 50 37 0.2362 1.1819 135.6 36.4 21.8
...
2020 04 17 15 21 00.7 +31 37 41 0.2093 1.1534 131.6 40.6 21.6
...
2020 04 23 15 46 33.4 +32 08 18 0.1922 1.1363 129.0 43.5 21.5
2020 04 24 15 51 03.8 +32 08 05 0.1896 1.1338 128.6 43.9 21.5
2020 04 25 15 55 38.2 +32 06 10 0.1871 1.1314 128.2 44.3 21.4
...
2020 05 01 16 24 16.7 +31 15 24 0.1735 1.1197 126.6 46.3 21.3
...
2020 05 09 17 04 20.8 +28 09 34 0.1595 1.1108 126.0 47.3 21.1
...
2020 05 24 18 14 10.1 +16 10 36 0.1478 1.1156 131.2 43.1 20.9
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-H135
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