MPEC 2021-K05 : 2021 JR8
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M.P.E.C. 2021-K05 Issued 2021 May 16, 08:45 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 JR8
Observations:
K21J08R* C2021 05 14.25778810 55 50.118-19 59 03.37 21.17wUEK005F51
K21J08R C2021 05 14.26881710 55 53.417-19 58 40.66 20.95wUEK005F51
K21J08R C2021 05 14.27985810 55 56.727-19 58 17.87 21.27wUEK005F51
K21J08R C2021 05 14.29087710 56 00.023-19 57 55.11 20.75wUEK005F51
K21J08R 4C2021 05 14.88985 10 59 15.97 -19 37 26.4 20.4 GVEK005J04
K21J08R 4C2021 05 14.90373 10 59 20.29 -19 36 56.8 21.0 GVEK005J04
K21J08R |C2021 05 14.97728 10 59 46.35 -19 33 29.4 20.7 GVEK005807
K21J08R |C2021 05 14.98004 10 59 47.19 -19 33 23.9 20.7 GVEK005807
K21J08R |C2021 05 14.98281 10 59 48.06 -19 33 18.0 20.6 GVEK005807
K21J08R |C2021 05 14.98558 10 59 48.90 -19 33 12.1 20.4 GVEK005807
K21J08R C2021 05 15.15622 11 00 44.17 -19 28 11.9 21.3 GVEK005I52
K21J08R C2021 05 15.16040 11 00 45.51 -19 28 02.9 20.8 GVEK005I52
K21J08R ^C2021 05 15.26415311 01 20.490-19 24 15.23 20.62GVEK005568
K21J08R ^C2021 05 15.26753511 01 21.534-19 24 08.07 20.47GVEK005568
K21J08R ^C2021 05 15.26851311 01 21.833-19 24 05.99 20.67GVEK005568
K21J08R KC2021 05 16.31138611 07 17.31 -18 45 37.9 21.0 GVEK005474
K21J08R KC2021 05 16.31494211 07 18.44 -18 45 30.0 20.4 GVEK005474
K21J08R KC2021 05 16.31850011 07 19.62 -18 45 22.6 20.6 GVEK005474
K21J08R KC2021 05 16.32205711 07 20.80 -18 45 14.0 21.0 GVEK005474
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. Crowder, T. Burdullis. Measurers
R. Weryk, R. Wainscoat. 3.6-m Canada-France-Hawaii Telescope + CCD.
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes, L.
Horn. 1.00-m f/10.0 astrograph + 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.
I52 Steward Observatory, Mt. Lemmon Station. Observer D. C. Fuls. Measurers
B. Gray, D. Rankin, F. C. Shelly. 1.0-m reflector + CCD.
J04 ESA Optical Ground Station, Tenerife. Observer D. Abreu. Measurers A.
Knofel, D. Koschny, M. Busch, M. Micheli, E. Schwab, R. Kresken, D.
Fohring. 1.0-m f/4.4 reflector + CCD.
Orbital elements:
2021 JR8 Earth MOID = 0.0789 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 289.97157 (2000.0) P Q
n 0.46246930 Peri. 344.65919 -0.63730372 +0.75314185
a 1.6560780 Node 245.45897 -0.68680616 -0.65114033
e 0.3440688 Incl. 10.33268 -0.34948714 -0.09377431
P 2.13 H 22.95 G 0.15 U 8
Residuals in seconds of arc
210514 F51 0.2- 0.1- 210514 807 0.0 0.4- 210515 568 0.0 0.0
210514 F51 0.1- 0.0 210514 807 0.2+ 0.2- 210516 474 0.0 0.1+
210514 F51 0.0 0.1+ 210514 807 0.0 0.0 210516 474 0.4- 0.3+
210514 F51 0.0 0.1+ 210515 I52 0.4- 0.3- 210516 474 0.1- 0.1-
210514 J04 0.4- 0.2+ 210515 I52 0.2+ 0.2- 210516 474 0.2+ 0.7+
210514 J04 0.4+ 0.5+ 210515 568 0.0 0.0
210514 807 0.1+ 0.1- 210515 568 0.0 0.0
Ephemeris:
2021 JR8 a,e,i = 1.66, 0.34, 10 q = 1.0863
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 04 16 09 29 23.0 -29 51 55 0.2189 1.1273 119.4 50.8 21.8
...
2021 05 01 10 00 11.6 -25 51 39 0.1793 1.0978 115.9 55.6 21.4
...
2021 05 09 10 30 04.9 -22 40 18 0.1598 1.0893 116.1 56.3 21.2
...
2021 05 15 10 59 52.9 -19 32 54 0.1473 1.0865 117.4 55.7 21.0
2021 05 16 11 05 29.4 -18 57 24 0.1455 1.0863 117.7 55.5 21.0
2021 05 17 11 11 16.9 -18 20 38 0.1437 1.0862 118.0 55.3 20.9
...
2021 05 23 11 49 36.0 -14 13 43 0.1355 1.0876 120.5 53.3 20.7
...
2021 05 31 12 47 41.3 -07 52 08 0.1321 1.0941 124.5 49.8 20.6
...
2021 06 15 14 34 42.4 +02 37 23 0.1546 1.1204 129.4 44.5 20.8
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-K05
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