MPEC 2021-J163 : 2021 JE4
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M.P.E.C. 2021-J163 Issued 2021 May 11, 19:21 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
2021 JE4
Observations:
K21J04E* C2021 05 08.35251613 38 54.780-04 01 52.04 21.74wUEJ163F51
K21J04E C2021 05 08.36348713 38 53.168-04 02 02.76 21.58wUEJ163F51
K21J04E C2021 05 08.37446613 38 51.531-04 02 13.38 21.56wUEJ163F51
K21J04E C2021 05 08.38543513 38 49.906-04 02 24.08 21.54wUEJ163F51
K21J04E ^C2021 05 09.28279613 36 42.041-04 17 02.19 21.43GVEJ163568
K21J04E ^C2021 05 09.28377513 36 41.897-04 17 03.18 21.24GVEJ163568
K21J04E ^C2021 05 09.28477213 36 41.754-04 17 04.13 21.12GVEJ163568
K21J04E C2021 05 10.21589313 34 29.34 -04 32 30.3 21.3 GVEJ163H01
K21J04E C2021 05 10.22110913 34 28.60 -04 32 35.6 21.5 GVEJ163H01
K21J04E C2021 05 10.22970913 34 27.36 -04 32 43.9 21.3 GVEJ163H01
K21J04E C2021 05 10.24071213 34 25.75 -04 32 54.9 21.2 GVEJ163H01
K21J04E KC2021 05 10.29309313 34 18.17 -04 33 47.2 21.27GVEJ163V06
K21J04E KC2021 05 10.29546813 34 17.84 -04 33 49.6 21.30GVEJ163V06
K21J04E KC2021 05 10.29784313 34 17.52 -04 33 51.9 21.73GVEJ163V06
K21J04E KC2021 05 10.30021813 34 17.14 -04 33 53.7 21.41GVEJ163V06
K21J04E KC2021 05 11.21763 13 32 08.63 -04 49 16.2 21.9 RoEJ163291
K21J04E KC2021 05 11.22148 13 32 08.05 -04 49 20.5 21.7 RoEJ163291
K21J04E KC2021 05 11.22532 13 32 07.52 -04 49 24.4 21.8 RoEJ163291
K21J04E KC2021 05 11.36052013 31 48.07 -04 51 40.9 20.58GVEJ163I52
K21J04E KC2021 05 11.36471813 31 47.48 -04 51 44.8 20.40GVEJ163I52
Observer details:
291 LPL/Spacewatch II. Observer J. V. Scotti. 1.8-m f/2.7 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.
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.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 Ritchey-Chretien + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer T. A. Pruyne.
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.
V06 Catalina Sky Survey-Kuiper. Observer G. J. Leonard. 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. 1.55-m reflector +
1K CCD.
Orbital elements:
2021 JE4 Earth MOID = 0.4229 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 239.36601 (2000.0) P Q
n 0.40168378 Peri. 278.50045 +0.68629959 +0.64685729
a 1.8191975 Node 42.16641 -0.29834310 +0.66732403
e 0.3463891 Incl. 29.69252 -0.66331310 +0.36912639
P 2.45 H 20.14 G 0.15 U 9
Residuals in seconds of arc
210508 F51 0.0 0.0 210510 H01 0.1- 0.1- 210510 V06 0.1- 0.4+
210508 F51 0.2+ 0.0 210510 H01 0.1+ 0.2- 210511 291 0.3+ 0.2+
210508 F51 0.0 0.0 210510 H01 0.3+ 0.0 210511 291 0.1- 0.2-
210508 F51 0.1- 0.0 210510 H01 0.1+ 0.0 210511 291 0.2+ 0.2-
210509 568 0.0 0.0 210510 V06 0.1- 0.3- 210511 I52 0.3- 0.0
210509 568 0.0 0.0 210510 V06 0.1+ 0.3- 210511 I52 0.2- 0.4+
210509 568 0.0 0.0 210510 V06 0.4+ 0.2-
Ephemeris:
2021 JE4 a,e,i = 1.82, 0.35, 30 q = 1.1890
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 04 11 14 39 40.3 +01 23 55 0.9003 1.8657 157.4 11.9 22.0
...
2021 04 26 14 08 39.4 -01 03 36 0.8043 1.8000 167.6 6.9 21.5
...
2021 05 04 13 49 26.0 -02 53 46 0.7790 1.7640 161.3 10.6 21.5
...
2021 05 10 13 34 59.9 -04 28 47 0.7720 1.7366 153.9 14.8 21.6
2021 05 11 13 32 39.1 -04 45 29 0.7718 1.7320 152.6 15.6 21.6
2021 05 12 13 30 19.7 -05 02 24 0.7718 1.7274 151.3 16.3 21.6
...
2021 05 18 13 17 05.1 -06 47 47 0.7773 1.6996 143.3 20.8 21.8
...
2021 05 26 13 01 54.0 -09 15 38 0.7967 1.6623 133.1 26.4 21.9
...
2021 06 10 12 42 57.0 -14 02 16 0.8592 1.5918 116.0 35.0 22.3
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-J163
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