MPEC 2021-H74 : 2021 HK1
The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.A form allowing access to any MPEC is at the bottom of this page.
Read MPEC 2021-H73
Read MPEC 2021-H75
M.P.E.C. 2021-H74 Issued 2021 April 19, 13:20 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 HK1
Observations:
K21H01K* C2021 04 17.41214512 40 28.713-20 44 43.82 20.47wUEH074F51
K21H01K C2021 04 17.42401412 40 42.140-20 44 51.97 VEH074F51
K21H01K C2021 04 17.43536712 40 55.010-20 44 59.28 20.16wUEH074F51
K21H01K C2021 04 17.44723312 41 08.437-20 45 06.50 VEH074F51
K21H01K |C2021 04 18.25000 12 56 30.04 -20 49 09.4 20.9 VuEH074807
K21H01K |C2021 04 18.25236 12 56 32.51 -20 49 09.6 20.9 VuEH074807
K21H01K |C2021 04 18.25473 12 56 34.94 -20 49 09.7 21.0 VuEH074807
K21H01K ^C2021 04 18.26076012 56 57.207-20 51 28.85 21.08GVEH074568
K21H01K ^C2021 04 18.26369912 57 00.263-20 51 30.60 20.66GVEH074568
K21H01K C2021 04 18.42533112 59 43.519-20 52 30.67 20.86GVEH074F51
K21H01K C2021 04 18.44044312 59 58.544-20 52 32.51 20.80GVEH074F51
K21H01K KC2021 04 19.47920813 17 17.78 -20 49 09.6 20.5 GVEH074474
K21H01K KC2021 04 19.48067613 17 19.08 -20 49 09.2 20.9 GVEH074474
K21H01K KC2021 04 19.48214513 17 20.34 -20 49 08.9 20.7 GVEH074474
Observer details:
474 Mount John Observatory, Lake Tekapo. Observers A. C. Gilmore, P. M.
Kilmartin. Measurer P. M. Kilmartin. 1.0-m f/7.7 reflector + CCD.
568 Mauna Kea. Observers R. Wainscoat, C. Cunningham, N. Manset. Measurers
R. Weryk, R. Wainscoat. 3.6-m Canada-France-Hawaii Telescope + CCD.
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes.
0.61-m f/6.5 astrograph + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz, M.
Willman, K. Chambers, I. Smith. 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.
Orbital elements:
2021 HK1 Earth MOID = 0.0198 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 326.87789 (2000.0) P Q
n 0.35338771 Peri. 306.86027 -0.99472725 -0.09985140
a 1.9813829 Node 227.42196 +0.10126877 -0.92031088
e 0.4995120 Incl. 1.82079 +0.01619694 -0.37822954
P 2.79 H 26.58 G 0.15 U 7
Residuals in seconds of arc
210417 F51 0.2+ 0.1- 210418 807 0.5+ 0.1- 210418 F51 0.1- 0.0
210417 F51 0.1- 0.0 210418 807 0.3+ 0.0 210419 474 0.0 0.1-
210417 F51 0.0 0.0 210418 568 0.0 0.1+ 210419 474 0.2+ 0.1+
210417 F51 0.1- 0.1+ 210418 568 0.0 0.0 210419 474 0.1- 0.1+
210418 807 0.0 0.1- 210418 F51 0.5- 0.0
Ephemeris:
2021 HK1 a,e,i = 1.98, 0.50, 2 q = 0.9917
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 03 20 05 35 59.3 +09 20 23 0.1056 0.9917 84.7 89.2 24.8
...
2021 04 04 07 17 53.4 -00 14 25 0.04948 1.0068 96.4 80.8 22.9
...
2021 04 12 10 18 49.0 -15 31 06 0.03567 1.0279 134.9 43.7 21.1
...
2021 04 18 12 51 57.6 -20 48 19 0.04664 1.0490 164.0 15.3 20.9
2021 04 19 13 09 35.7 -20 51 15 0.04985 1.0529 166.7 12.7 20.9
2021 04 20 13 25 03.5 -20 47 53 0.05331 1.0569 168.7 10.7 21.0
...
2021 04 26 14 25 14.6 -19 39 51 0.07762 1.0833 173.2 6.4 21.7
...
2021 05 04 15 01 06.6 -18 12 08 0.1157 1.1236 175.3 4.2 22.5
...
2021 05 19 15 25 59.0 -16 46 23 0.2005 1.2116 175.0 4.1 23.9
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-H74
Read MPEC 2021-H73
Read MPEC 2021-H75
Enter an MPEC number in one of the following forms:
- 1997-B01 (the full form)
- J97B01 (the packed version of the full form)
- B01 (the abbreviated form)