MPEC 2023-G48 : 2012 HH8
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M.P.E.C. 2023-G48 Issued 2023 April 10, 14:05 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets, routine data on comets and natural satellites,
and occasional editorial announcements. 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
2012 HH8
Revision to MPEC 2012-H46
Additional Observations:
K12H08H EC2023 04 07.04057718 17 25.061+15 50 58.42 18.8 GVEG048J95
K12H08H KC2023 04 07.04416118 17 19.428+15 51 46.22 19.1 GVEG048J95
K12H08H KC2023 04 09.44076517 17 46.579+23 16 27.44 18.92GVEG048I52
K12H08H KC2023 04 09.44284517 17 43.624+23 16 46.02 18.80GVEG048I52
Observer details:
I52 Steward Observatory, Mt. Lemmon Station. Observer R. A. Kowalski.
Measurers E. J. Christensen, D. Fay, J. B. Fazekas, D. C. Fuls, A. R.
Gibbs, A. D. Grauer, H. Groeller, J. K. Hogan, R. A. Kowalski, S. M.
Larson, G. J. Leonard, D. Rankin, R. L. Seaman, A. Serrano, F. C. Shelly,
K. W. Wierzchos. 1.0-m prime focus + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.41-m f/6.3 Schmidt-Cassegrain
+ CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
230407 J95 1.05+ 0.34+ 230409 I52 0.42+ 0.57+ E2022-M93 -0.24 days
Orbital elements:
2012 HH8 Earth MOID = 0.0518 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Veres
M 4.18677 (2000.0) P Q
n 0.53787769 Peri. 249.37007 +0.13293277 -0.98001344
a 1.4974317 Node 195.41907 +0.98082002 +0.10859935
e 0.7457935 Incl. 33.82305 -0.14255160 -0.16667286
P 1.83 H 20.90 G 0.15 U 0
Residuals in seconds of arc
120411 F51 0.1+ 0.3- 120421 G48 0.7- 0.2- 120427 F51 0.0 0.1+
120411 F51 0.0 0.3- 120421 G48 0.8- 0.5+ 120427 F51 0.0 0.1+
120413 F51 0.1- 0.1- 120421 H01 0.2- 0.0 120501 H21 0.0 0.5-
120420 703 0.1+ 0.0 120421 H01 0.1- 0.1- 120501 H21 0.0 0.2-
120420 703 0.1+ 0.3- 120421 H01 0.1- 0.2+ 120501 H21 0.1- 0.2-
120420 703 0.4- 0.4+ 120421 H01 0.2- 0.2+ 120501 F51 0.0 0.1+
120420 703 0.3- 0.3- 120421 651 0.3+ 0.2+ 120511 H21 0.9+ 0.2+
120420 703 0.3- 0.2+ 120421 651 0.2- 0.1+ 120511 H21 0.6+ 0.8-
120420 703 1.0- 0.3+ 120421 H36 0.4+ 0.2- 120511 H21 0.5+ 0.0
120420 703 1.3- 0.9+ 120421 H36 0.5+ 0.8- 120513 291 0.3+ 0.1+
120420 A24 0.4+ 0.1+ 120421 H36 0.1- 0.7- 120513 291 1.3- 0.3-
120420 A24 0.5+ 0.2+ 120421 461 0.3- 0.0 120513 291 0.7- 0.5+
120420 C92 0.2+ 0.1+ 120421 461 0.3- 0.3+ 120515 H21 0.7+ 0.3-
120420 C92 0.5- 0.3- 120421 461 0.1- 0.1+ 120515 H21 0.0 0.8+
120420 204 0.1- 0.1- 120421 461 0.1+ 0.4+ 120515 H21 1.2- 0.2-
120420 204 0.0 0.2+ 120421 461 0.1+ 0.1- 120518 H21 1.1- 0.4-
120420 204 0.1- 0.0 120423 H21 0.0 0.5+ 120518 H21 1.0- 0.0
120421 203 0.1+ 0.1+ 120423 H21 0.1- 0.4+ 120518 H21 0.9- 0.4-
120421 J95 0.1- 0.2- 120423 H21 0.4- 0.3+ 230407 J95 0.3- 0.0
120421 203 0.2+ 0.3- 120423 H21 0.3- 0.4+ 230407 J95 0.1- 0.2+
120421 J95 0.2- 0.1- 120425 H21 0.1+ 0.6+ 230409 I52 0.2+ 0.0
120421 J95 0.0 0.0 120425 H21 0.4+ 0.0 230409 I52 0.0 0.1-
120421 G48 1.7- 0.3+ 120425 H21 0.2+ 0.1-
Ephemeris:
2012 HH8 a,e,i = 1.50, 0.75, 34 q = 0.3807
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 03 11 23 40 16.2 -25 13 21 0.4251 0.6181 21.6 143.7 25.4
...
2023 03 26 22 14 36.8 -20 11 12 0.1944 0.8509 37.3 134.7 23.2
...
2023 04 03 20 01 09.7 -00 35 08 0.1193 0.9683 71.5 101.8 19.9
...
2023 04 09 17 28 07.7 +22 07 57 0.1285 1.0522 110.0 63.4 18.8
2023 04 10 17 05 07.8 +24 35 08 0.1362 1.0658 114.8 58.6 18.8
2023 04 11 16 43 57.5 +26 33 48 0.1450 1.0793 118.9 54.4 18.9
...
2023 04 17 15 14 15.2 +31 53 37 0.2149 1.1585 132.0 40.0 19.5
...
2023 04 25 14 17 20.6 +32 22 45 0.3290 1.2589 134.6 34.6 20.4
...
2023 05 10 13 38 14.2 +29 52 49 0.5675 1.4321 128.3 33.6 21.9
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-G48
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