MPEC 2021-J239 : 2021 JN7
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M.P.E.C. 2021-J239 Issued 2021 May 15, 20:22 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 JN7
Observations:
K21J07N* C2021 05 13.38633317 58 19.40 +48 47 21.3 21.10GVEJ239G96
K21J07N C2021 05 13.39156317 58 19.96 +48 46 43.4 21.62GVEJ239G96
K21J07N C2021 05 13.39680217 58 20.39 +48 46 05.4 21.59GVEJ239G96
K21J07N KC2021 05 13.43979917 58 23.98 +48 40 51.5 21.58GVEJ239I52
K21J07N KC2021 05 13.44316017 58 24.27 +48 40 26.8 22.09GVEJ239I52
K21J07N KC2021 05 13.44652217 58 24.58 +48 40 02.4 21.64GVEJ239I52
K21J07N KC2021 05 14.32563418 00 37.89 +46 48 05.0 21.4 VuEJ239H21
K21J07N KC2021 05 14.33289718 00 38.49 +46 47 07.8 21.1 VuEJ239H21
K21J07N C2021 05 14.40444 18 00 48.54 +46 37 52.8 VEJ239I52
K21J07N C2021 05 14.41031 18 00 49.09 +46 37 06.2 21.3 GVEJ239I52
K21J07N 1C2021 05 14.91571 18 02 08.86 +45 27 02.1 21.0 VVEJ239033
K21J07N 1C2021 05 14.91767 18 02 09.08 +45 26 46.3 21.3 VVEJ239033
K21J07N 1C2021 05 14.91964 18 02 09.31 +45 26 30.4 20.9 VVEJ239033
K21J07N 1C2021 05 14.92160 18 02 09.53 +45 26 14.5 21.3 VVEJ239033
K21J07N KC2021 05 15.04053 18 02 22.65 +45 10 05.0 VEJ239204
K21J07N HC2021 05 15.07067 18 02 25.39 +45 05 50.8 21.5 GVEJ239204
K21J07N KC2021 05 15.40393318 03 13.55 +44 18 24.8 21.79GVEJ239I52
K21J07N KC2021 05 15.40729718 03 13.80 +44 17 55.0 21.45GVEJ239I52
K21J07N KC2021 05 15.41066118 03 14.07 +44 17 25.8 21.14GVEJ239I52
K21J07N KC2021 05 15.41402418 03 14.26 +44 16 56.1 21.47GVEJ239I52
K21J07N C2021 05 15.43493418 03 16.11 +44 13 53.0 21.23GVEJ239V00
K21J07N C2021 05 15.43982918 03 16.51 +44 13 09.6 22.01GVEJ239V00
K21J07N C2021 05 15.44474018 03 16.91 +44 12 25.8 21.34GVEJ239V00
K21J07N C2021 05 15.44964618 03 17.31 +44 11 42.0 21.83GVEJ239V00
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, C.
Hoegner, U. Laux, F. Ludwig, B. Stecklum. Measurer B. Stecklum. 1.34-m
f/3 Schmidt + CCD.
204 Schiaparelli Observatory. Observer L. Buzzi. 0.84-m f/3.5 reflector +
CCD.
G96 Mt. Lemmon Survey. 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. 1.5-m reflector +
10K CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers T. Linder, R. Holmes, L. Horn. 0.76-m f/3.0 astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers T. A. Pruyne, D. C.
Fuls. 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, B. Gray. 1.0-m reflector + CCD.
V00 Kitt Peak-Bok. Observer H. Groeller. Measurers M. J. Brucker, E. J.
Christensen, C. E. Woodward, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D.
Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. S.
McMillan, T. A. Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W.
Wierzchos. 2.25-m reflector + CCD.
Orbital elements:
2021 JN7 Earth MOID = 0.0409 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 276.95585 (2000.0) P Q
n 0.63569292 Peri. 143.76781 -0.80391044 +0.55894476
a 1.3395876 Node 71.45268 -0.58354777 -0.67526776
e 0.2372161 Incl. 12.37917 -0.11489124 -0.48124236
P 1.55 H 24.93 G 0.15 U 8
Residuals in seconds of arc
210513 G96 0.5- 0.1- 210514 I52 0.4- 0.1- 210515 I52 0.4+ 0.4+
210513 G96 0.6+ 0.4- 210514 I52 0.3+ 0.1+ 210515 I52 0.2+ 0.0
210513 G96 0.4+ 0.4- 210514 033 0.2+ 0.0 210515 I52 0.2+ 0.3+
210513 I52 0.1- 0.0 210514 033 0.1+ 0.1+ 210515 I52 0.6- 0.1+
210513 I52 0.1- 0.3+ 210514 033 0.1+ 0.1+ 210515 V00 0.1- 0.1+
210513 I52 0.1+ 0.7+ 210514 033 0.0 0.1+ 210515 V00 0.1+ 0.0
210514 H21 0.1+ 0.0 210515 204 0.2- 0.1- 210515 V00 0.1+ 0.1-
210514 H21 0.3- 0.0 210515 204 0.6- 0.4- 210515 V00 0.2+ 0.3-
Ephemeris:
2021 JN7 a,e,i = 1.34, 0.24, 12 q = 1.0218
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 04 15 16 35 20.3 +71 42 35 0.1669 1.0263 93.2 77.4 23.8
...
2021 04 30 17 21 42.9 +65 00 32 0.1185 1.0222 93.9 79.5 23.1
...
2021 05 08 17 44 19.8 +57 26 40 0.09128 1.0261 98.1 76.9 22.5
...
2021 05 14 17 59 48.5 +47 30 20 0.07188 1.0318 105.2 71.0 21.8
2021 05 15 18 02 14.6 +45 15 58 0.06888 1.0330 106.9 69.5 21.6
2021 05 16 18 04 38.1 +42 48 37 0.06600 1.0342 108.8 67.8 21.5
...
2021 05 22 18 17 58.7 +22 30 28 0.05216 1.0429 124.7 52.9 20.6
...
2021 05 30 18 32 28.9 -16 04 31 0.05043 1.0576 149.9 28.7 19.8
...
2021 06 14 18 44 32.2 -56 28 41 0.09474 1.0938 144.0 33.1 21.4
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-J239
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