MPEC 2021-J23 : 2021 JG
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M.P.E.C. 2021-J23 Issued 2021 May 2, 21:32 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 JG
Observations:
K21J00G* C2021 05 01.17785412 52 20.64 -00 03 40.1 20.44GVEJ023G96
K21J00G C2021 05 01.18350912 52 21.34 -00 04 32.4 20.65GVEJ023G96
K21J00G C2021 05 01.18918812 52 22.03 -00 05 23.6 20.90GVEJ023G96
K21J00G C2021 05 01.19485912 52 22.74 -00 06 14.8 20.79GVEJ023G96
K21J00G KC2021 05 01.25497512 52 29.82 -00 15 17.7 20.30GVEJ023I52
K21J00G KC2021 05 01.25667712 52 30.03 -00 15 32.9 20.90GVEJ023I52
K21J00G KC2021 05 01.25837912 52 30.22 -00 15 48.7 20.45GVEJ023I52
K21J00G C2021 05 01.31480312 52 36.56 -00 24 15.1 20.7 GVEJ023H01
K21J00G C2021 05 01.32181112 52 37.44 -00 25 17.3 21.3 GVEJ023H01
K21J00G C2021 05 01.33004512 52 38.50 -00 26 29.9 20.8 GVEJ023H01
K21J00G KC2021 05 02.10355712 54 55.07 -02 12 35.5 21.1 VuEJ023H21
K21J00G KC2021 05 02.10936812 54 55.67 -02 13 20.0 20.8 VuEJ023H21
K21J00G KC2021 05 02.11498712 54 56.25 -02 14 02.7 21.0 VuEJ023H21
K21J00G KC2021 05 02.20043312 55 08.40 -02 24 32.4 21.30GVEJ023I52
K21J00G KC2021 05 02.20468812 55 08.83 -02 25 04.2 21.06GVEJ023I52
K21J00G KC2021 05 02.20894012 55 09.21 -02 25 36.7 VEJ023I52
Observer details:
G96 Mt. Lemmon Survey. Observer D. Rankin. 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.
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.
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 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. 1.0-m
reflector + CCD.
Orbital elements:
2021 JG Earth MOID = 0.0154 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 308.77179 (2000.0) P Q
n 0.90349761 Peri. 70.29864 -0.38422979 -0.92150272
a 1.0597043 Node 42.43615 +0.81255643 -0.36662181
e 0.3090520 Incl. 4.80914 +0.43831440 -0.12814520
P 1.09 H 26.13 G 0.15 U 7
Residuals in seconds of arc
210501 G96 0.2- 0.2+ 210501 I52 0.1- 0.4- 210502 H21 0.4- 0.2-
210501 G96 0.0 0.6- 210501 H01 0.1+ 0.1+ 210502 I52 0.1+ 0.3+
210501 G96 0.0 0.1- 210501 H01 0.0 0.0 210502 I52 0.4+ 0.4+
210501 G96 0.3+ 0.2+ 210501 H01 0.0 0.2+ 210502 I52 0.1- 0.3-
210501 I52 0.1- 0.0 210502 H21 0.0 0.2-
210501 I52 0.1+ 0.1+ 210502 H21 0.3- 0.3-
Ephemeris:
2021 JG a,e,i = 1.06, 0.31, 5 q = 0.7322
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 04 02 01 31 51.7 +30 55 27 0.1205 0.8953 28.4 148.0 29.4
...
2021 04 17 02 20 37.5 +53 07 45 0.03856 0.9762 43.5 134.9 25.2
...
2021 04 25 12 05 56.2 +34 57 08 0.02375 1.0193 123.7 55.2 20.1
...
2021 05 01 12 51 44.3 +00 25 31 0.04949 1.0509 150.7 28.0 21.0
2021 05 02 12 54 35.5 -01 57 26 0.05464 1.0561 151.6 27.0 21.1
2021 05 03 12 57 00.5 -03 56 00 0.05990 1.0613 152.1 26.4 21.3
...
2021 05 09 13 06 43.7 -11 01 55 0.09296 1.0918 151.1 26.6 22.4
...
2021 05 17 13 15 18.6 -15 15 05 0.1401 1.1307 146.5 29.6 23.4
...
2021 06 01 13 30 45.5 -18 48 01 0.2367 1.1975 136.8 35.4 24.8
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-J23
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