MPEC 2020-H117 : 2020 HF4
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M.P.E.C. 2020-H117 Issued 2020 April 23, 10:17 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 HF4
Observations:
K20H04F* C2020 04 18.45842216 14 39.804+11 03 03.04 20.96wUEH117F52
K20H04F C2020 04 18.47032616 14 36.318+11 01 47.99 21.22wUEH117F52
K20H04F C2020 04 18.48225916 14 32.807+11 00 32.14 20.88wUEH117F52
K20H04F C2020 04 22.52104915 59 23.694+02 36 30.75 21.20wUEH117F51
K20H04F C2020 04 22.53368715 59 18.843+02 34 43.44 20.7 GVEH117F51
K20H04F C2020 04 22.54675215 59 13.802+02 32 51.88 21.01wUEH117F51
K20H04F C2020 04 22.55938515 59 08.873+02 31 02.10 21.3 GVEH117F51
K20H04F KC2020 04 22.98684815 57 35.783+01 28 18.44 21.0 GVEH117J04
K20H04F KC2020 04 22.99161915 57 34.092+01 27 36.44 20.8 GVEH117J04
K20H04F C2020 04 23.05445 15 57 01.91 +01 16 41.5 23.5 VVEH117033
K20H04F C2020 04 23.05601 15 57 01.36 +01 16 27.6 22.3 VVEH117033
K20H04F C2020 04 23.05756 15 57 00.81 +01 16 14.2 21.7 VVEH117033
K20H04F pC2020 04 23.06946415 56 55.75 +01 14 51.0 20.8 GVEH117L01
K20H04F pC2020 04 23.07121815 56 55.17 +01 14 36.4 20.8 GVEH117L01
K20H04F KC2020 04 23.07295915 56 54.46 +01 14 20.5 20.7 GVEH117L01
K20H04F KC2020 04 23.07469915 56 53.83 +01 14 04.4 20.6 GVEH117L01
K20H04F KC2020 04 23.07643915 56 53.25 +01 13 49.8 20.8 GVEH117L01
K20H04F C2020 04 23.40289 15 55 24.85 +00 26 01.6 20.5 GVEH117G96
K20H04F C2020 04 23.40800 15 55 22.83 +00 25 15.3 20.9 GVEH117G96
K20H04F C2020 04 23.41313 15 55 20.81 +00 24 29.2 20.3 GVEH117G96
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, C.
Hoegner, B. Stecklum. Measurer B. Stecklum. 1.34-m f/3 Schmidt + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, 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.
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.
G96 Mt. Lemmon Survey. 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. 1.5-m reflector + 10K CCD.
J04 ESA Optical Ground Station, Tenerife. Observer P. Ruiz. Measurers M.
Micheli, D. Koschny, L. Conversi, M. Busch, A. Knofel, E. Schwab. 1.0-m
f/4.4 reflector + CCD.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector +
CCD.
Orbital elements:
2020 HF4 Earth MOID = 0.0011 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5 Bell
M 175.18836 (2000.0) P Q
n 0.96853944 Peri. 33.70470 +0.28497017 -0.95700136
a 1.0117142 Node 39.81452 +0.85968930 +0.23015367
e 0.0223622 Incl. 4.85802 +0.42394140 +0.17657203
P 1.02 H 27.5 G 0.15 U 5
Residuals in seconds of arc
200418 F52 0.0 0.1+ 200422 J04 0.5+ 0.2+ 200423 L01 0.7- 0.3+
200418 F52 0.2- 0.1+ 200422 J04 0.2+ 0.1+ 200423 L01 0.6- 0.3-
200418 F52 0.1- 0.1- 200423 033 0.8- 0.5- 200423 L01 0.3+ 0.5+
200422 F51 0.5- 0.9- 200423 033 0.7- 0.5- 200423 G96 0.1+ 0.0
200422 F51 0.4+ 0.2+ 200423 033 0.6- 0.2- 200423 G96 0.2+ 0.1-
200422 F51 0.7+ 0.8+ 200423 L01 0.7- 0.2- 200423 G96 0.3+ 0.3+
200422 F51 0.1- 0.3- 200423 L01 0.3+ 0.8+
Ephemeris:
2020 HF4 a,e,i = 1.01, 0.02, 5 q = 0.9891
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 03 24 16 41 11.8 +32 14 21 0.06132 1.0181 108.5 68.3 23.9
...
2020 04 08 16 35 36.9 +24 08 20 0.04286 1.0236 120.4 57.5 22.8
...
2020 04 16 16 21 28.7 +15 05 18 0.03343 1.0263 132.1 46.5 21.9
...
2020 04 22 16 01 37.8 +03 51 20 0.02752 1.0281 145.7 33.5 21.2
2020 04 23 15 57 17.7 +01 29 00 0.02672 1.0284 148.4 30.8 21.0
2020 04 24 15 52 37.7 -01 02 27 0.02598 1.0287 151.3 28.0 20.9
...
2020 04 30 15 17 02.6 -18 50 17 0.02335 1.0302 168.0 11.8 20.1
...
2020 05 08 14 09 07.8 -42 21 43 0.02538 1.0319 152.4 26.9 20.8
...
2020 05 23 11 48 43.3 -60 32 40 0.04006 1.0338 121.1 57.0 22.6
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-H117
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