MPEC 2020-H116 : 2020 HE4
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M.P.E.C. 2020-H116 Issued 2020 April 23, 10:14 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
2020 HE4
Observations:
K20H04E C2020 04 16.36215412 49 45.974-17 42 21.89 21.4 GVEH116F52
K20H04E C2020 04 16.37331712 49 45.550-17 41 36.79 21.1 GVEH116F52
K20H04E C2020 04 16.38442812 49 45.095-17 40 51.92 21.4 GVEH116F52
K20H04E* C2020 04 21.31404212 48 25.705-11 46 55.85 20.98wUEH116F52
K20H04E C2020 04 21.32447812 48 25.418-11 46 08.49 21.35wUEH116F52
K20H04E C2020 04 21.33493812 48 25.123-11 45 21.32 21.48wUEH116F52
K20H04E KC2020 04 22.15087512 48 16.48 -10 43 12.8 21.3 VuEH116H21
K20H04E KC2020 04 22.15562112 48 16.36 -10 42 50.6 21.3 VuEH116H21
K20H04E KC2020 04 22.15988312 48 16.24 -10 42 31.3 21.0 VuEH116H21
K20H04E C2020 04 22.33974912 48 14.928-10 28 27.97 21.22wUEH116F51
K20H04E C2020 04 22.36282512 48 14.312-10 26 41.19 21.73wUEH116F51
K20H04E C2020 04 22.37435112 48 14.007-10 25 47.74 21.57wUEH116F51
K20H04E C2020 04 22.89270 12 48 09.95 -09 45 53.6 21.6 VVEH116033
K20H04E C2020 04 22.89599 12 48 09.85 -09 45 38.3 21.2 VVEH116033
K20H04E C2020 04 22.89929 12 48 09.82 -09 45 23.0 21.5 VVEH116033
K20H04E bC2020 04 22.95104312 48 08.68 -09 41 18.5 21.3 GVEH116L01
K20H04E pC2020 04 22.95417812 48 08.60 -09 41 03.6 21.4 GVEH116L01
K20H04E bC2020 04 22.95809312 48 08.48 -09 40 45.7 21.2 GVEH116L01
K20H04E C2020 04 23.23759 12 48 07.53 -09 18 50.1 VEH116I52
K20H04E C2020 04 23.24065 12 48 07.44 -09 18 35.5 VEH116I52
K20H04E C2020 04 23.24372 12 48 07.37 -09 18 21.1 VEH116I52
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. 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, K. Chambers, T. Dukes, T.
Lowe, A. Schultz, M. Willman. Measurers S. Chastel, M. Huber, Y.
Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers, T. de Boer, L. Denneau, J.
Fairlamb, H. Flewelling, C.-C. Lin, E. Magnier. 1.8-m Ritchey-Chretien +
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.
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 HE4 Earth MOID = 0.1524 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5 Bell
M 333.07071 (2000.0) P Q
n 0.66787215 Peri. 66.37721 +0.14102089 +0.98054251
a 1.2962054 Node 212.66215 -0.97527642 +0.11388774
e 0.1636703 Incl. 14.65763 -0.17014409 +0.15989362
P 1.48 H 23.7 G 0.15 U 7
Residuals in seconds of arc
200416 F52 0.1+ 0.2- 200422 H21 0.1- 0.2- 200422 033 0.2+ 0.4-
200416 F52 0.0 0.0 200422 H21 0.4- 0.6- 200422 L01 0.0 0.1-
200416 F52 0.4- 0.2+ 200422 F51 0.2+ 0.0 200422 L01 0.2- 0.1+
200421 F52 0.1+ 0.0 200422 F51 0.1+ 0.2+ 200422 L01 0.8- 0.4-
200421 F52 0.1+ 0.1+ 200422 F51 0.2+ 0.3+ 200423 I52 0.2- 0.0
200421 F52 0.1+ 0.1- 200422 033 0.2+ 0.2- 200423 I52 0.5- 0.2+
200422 H21 0.0 0.6- 200422 033 0.3- 0.3- 200423 I52 0.5- 0.2+
Ephemeris:
2020 HE4 a,e,i = 1.30, 0.16, 15 q = 1.0841
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 03 24 12 58 27.8 -34 05 06 0.3102 1.2652 145.6 26.4 22.9
...
2020 04 08 12 53 10.3 -25 48 24 0.2370 1.2278 161.1 15.3 21.9
...
2020 04 16 12 49 52.9 -18 06 12 0.2098 1.2083 166.0 11.6 21.4
...
2020 04 22 12 48 17.3 -10 54 17 0.1963 1.1940 162.5 14.7 21.4
2020 04 23 12 48 08.9 -09 36 57 0.1947 1.1916 161.3 15.7 21.4
2020 04 24 12 48 03.1 -08 18 29 0.1932 1.1893 160.1 16.8 21.4
...
2020 04 30 12 48 30.8 -00 14 45 0.1882 1.1756 151.1 24.5 21.6
...
2020 05 08 12 52 18.1 +10 12 33 0.1904 1.1582 138.2 35.5 21.9
...
2020 05 23 13 09 23.3 +25 30 42 0.2140 1.1291 118.1 52.3 22.5
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-H116
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