MPEC 2023-S171 : 2006 EF1
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M.P.E.C. 2023-S171 Issued 2023 September 23, 13:41 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
2006 EF1
Revision to MPEC 2006-E27
Additional Observations:
K06E01F 1C2023 09 21.21366722 31 12.364+42 00 32.62 21.05GVES171G96
K06E01F 1C2023 09 21.22074722 31 11.528+42 00 18.76 21.15GVES171G96
K06E01F 1C2023 09 21.23489822 31 09.959+41 59 48.91 21.43GVES171G96
K06E01F KC2023 09 21.41108022 30 50.610+41 53 29.50 VES171I52
K06E01F KC2023 09 21.42035722 30 49.680+41 53 09.40 VES171I52
K06E01F KC2023 09 23.10150622 28 38.680+40 56 44.95 20.94GVES171I52
K06E01F KC2023 09 23.10369322 28 38.507+40 56 40.20 21.23GVES171I52
K06E01F KC2023 09 23.10588022 28 38.388+40 56 36.02 20.80GVES171I52
Observer details:
G96 Mt. Lemmon Survey. Observer J. K. Hogan. 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. 1.5-m reflector + 10K
CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers K. W. Wierzchos, A.
Serrano. 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.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or zero decimals in degrees), reference and Delta-T
230921 G96 11- 4- 230923 I52 10- 4- MPO 98177 -2.80 days
Orbital elements:
2006 EF1 Earth MOID = 0.0288 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 49.09572 (2000.0) P Q
n 0.69269402 Peri. 296.50434 -0.07918517 +0.98898893
a 1.2650521 Node 328.18004 -0.80923119 -0.13701184
e 0.3441323 Incl. 13.71667 -0.58212936 +0.05593430
P 1.42 H 22.92 G 0.15 U 2
Residuals in seconds of arc
060305 G96 0.4- 0.4- 060306 G96 0.3- 0.0 060309 291 1.6+ 0.7-
060305 G96 0.9- 0.9+ 060306 G96 0.2- 0.2- 230921 G96 0.1+ 0.3-
060305 G96 0.7- 0.2- 060306 G96 0.4+ 0.1+ 230921 G96 0.2- 0.4+
060305 G96 1.3+ 0.3- 060308 291 0.7+ 0.9+ 230921 G96 0.3+ 0.2-
060305 G96 0.0 0.3- 060308 291 0.2- 0.6+ 230921 I52 0.0 0.3-
060305 G96 1.4- 0.7- 060308 568 0.2+ 0.1- 230921 I52 0.0 0.1+
060305 G96 0.3+ 0.0 060308 568 0.3+ 0.1- 230923 I52 0.5- 0.4+
060305 G96 0.3+ 0.3- 060309 291 1.6- 0.4- 230923 I52 0.3- 0.3-
060306 G96 0.2- 0.1- 060309 291 0.2- 0.0 230923 I52 0.5+ 0.4-
Ephemeris:
2006 EF1 a,e,i = 1.27, 0.34, 14 q = 0.8297
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 08 24 06 11 54.8 +45 06 53 0.04948 0.9878 60.5 117.0 21.0
...
2023 09 08 23 21 11.5 +52 16 16 0.1092 1.0690 121.6 53.4 20.2
...
2023 09 16 22 42 17.6 +45 20 44 0.1568 1.1137 130.4 43.4 20.8
...
2023 09 22 22 30 02.5 +41 33 27 0.1949 1.1473 133.7 39.2 21.2
2023 09 23 22 28 43.7 +41 00 07 0.2014 1.1529 134.1 38.7 21.3
2023 09 24 22 27 34.6 +40 27 51 0.2080 1.1585 134.4 38.2 21.4
...
2023 09 30 22 23 22.5 +37 33 03 0.2486 1.1917 135.5 36.1 21.8
...
2023 10 08 22 22 57.2 +34 17 46 0.3059 1.2353 135.2 34.8 22.2
...
2023 10 23 22 32 15.0 +29 34 35 0.4247 1.3135 131.0 34.9 23.1
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-S171
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