MPEC 2021-J212 : 2021 JH6
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M.P.E.C. 2021-J212 Issued 2021 May 14, 13:03 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 JH6
Observations:
K21J06H* C2021 05 12.33477315 37 13.67 -12 09 39.4 20.69GVEJ212G96
K21J06H C2021 05 12.33987715 37 13.50 -12 09 17.7 21.25GVEJ212G96
K21J06H C2021 05 12.34497515 37 13.30 -12 08 57.2 21.28GVEJ212G96
K21J06H C2021 05 12.35007315 37 13.09 -12 08 35.7 21.45GVEJ212G96
K21J06H C2021 05 12.36372515 37 12.45 -12 07 39.9 21.5 GVEJ212H01
K21J06H C2021 05 12.36714015 37 12.31 -12 07 25.8 21.1 GVEJ212H01
K21J06H C2021 05 12.37662115 37 11.96 -12 06 46.7 22.0 GVEJ212H01
K21J06H KC2021 05 12.38534715 37 11.61 -12 06 10.6 22.2 GVEJ212H01
K21J06H KC2021 05 12.44763815 37 09.32 -12 01 51.7 21.38GVEJ212I52
K21J06H KC2021 05 12.45100015 37 09.24 -12 01 38.0 21.30GVEJ212I52
K21J06H KC2021 05 13.21861515 36 47.93 -11 08 48.1 22.1 VuEJ212H21
K21J06H KC2021 05 13.22368415 36 47.74 -11 08 26.8 21.7 VuEJ212H21
K21J06H KC2021 05 13.22611715 36 47.61 -11 08 16.7 22.0 VuEJ212H21
K21J06H C2021 05 13.29134715 36 45.59 -11 03 44.5 21.0 GVEJ212H01
K21J06H KC2021 05 13.29651715 36 45.49 -11 03 22.5 21.74GVEJ212I52
K21J06H C2021 05 13.29800615 36 45.31 -11 03 16.8 21.1 GVEJ212H01
K21J06H KC2021 05 13.30155715 36 45.27 -11 03 01.7 20.99GVEJ212I52
K21J06H C2021 05 13.30518515 36 45.04 -11 02 47.0 21.0 GVEJ212H01
K21J06H KC2021 05 13.30659715 36 45.05 -11 02 40.7 21.40GVEJ212I52
K21J06H C2021 05 13.31143515 36 44.78 -11 02 21.1 21.4 GVEJ212H01
K21J06H KC2021 05 13.31163815 36 44.87 -11 02 20.2 21.38GVEJ212I52
K21J06H KC2021 05 13.56454015 36 36.94 -10 44 14.6 21.0 GVEJ212474
K21J06H KC2021 05 13.56689815 36 36.85 -10 44 03.7 21.0 GVEJ212474
K21J06H KC2021 05 13.56925715 36 36.79 -10 43 54.4 21.1 GVEJ212474
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.
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.
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 T. Linder, R. Holmes, L. Horn. 1.3-m f/4.0 astrograph + 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.
Orbital elements:
2021 JH6 Earth MOID = 0.2967 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 250.70574 (2000.0) P Q
n 0.52739847 Peri. 49.25087 +0.08946228 +0.96079425
a 1.5172022 Node 227.97327 -0.98665380 +0.04949874
e 0.1698330 Incl. 20.68846 -0.13605432 +0.27280813
P 1.87 H 23.11 G 0.15 U 9
Residuals in seconds of arc
210512 G96 0.4- 0.5- 210512 I52 0.2- 0.5+ 210513 I52 0.1- 0.1-
210512 G96 0.1+ 0.2+ 210512 I52 0.4+ 0.3+ 210513 H01 0.2+ 0.0
210512 G96 0.1+ 0.4- 210513 H21 0.2- 0.1- 210513 I52 0.3- 0.0
210512 G96 0.1+ 0.1+ 210513 H21 0.1- 0.2+ 210513 H01 0.1+ 0.0
210512 H01 0.1- 0.0 210513 H21 0.6- 0.2+ 210513 I52 0.0 0.5-
210512 H01 0.1- 0.0 210513 H01 0.2+ 0.0 210513 474 0.1- 0.5-
210512 H01 0.1+ 0.1- 210513 I52 0.1+ 0.1- 210513 474 0.1- 0.6+
210512 H01 0.1- 0.1- 210513 H01 0.0 0.1+ 210513 474 0.4+ 0.1+
Ephemeris:
2021 JH6 a,e,i = 1.52, 0.17, 21 q = 1.2595
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 04 14 15 38 25.3 -35 39 11 0.4381 1.3695 140.5 27.8 23.2
...
2021 04 29 15 41 42.6 -25 48 08 0.3496 1.3387 158.7 15.9 22.3
...
2021 05 07 15 39 36.6 -18 04 00 0.3189 1.3238 169.4 8.0 21.8
...
2021 05 13 15 36 54.2 -11 23 35 0.3053 1.3133 171.8 6.3 21.6
2021 05 14 15 36 24.1 -10 14 22 0.3039 1.3117 171.1 6.9 21.6
2021 05 15 15 35 53.5 -09 04 48 0.3027 1.3100 170.0 7.7 21.6
...
2021 05 21 15 32 51.0 -02 08 53 0.3006 1.3006 161.5 14.3 21.9
...
2021 05 29 15 29 29.4 +06 23 23 0.3100 1.2894 149.1 23.8 22.2
...
2021 06 13 15 28 06.7 +18 01 04 0.3550 1.2728 129.9 37.8 22.9
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-J212
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