MPEC 2023-O69 : 2012 YJ7
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M.P.E.C. 2023-O69 Issued 2023 July 24, 16:45 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 YJ7
Revision to MPEC 2013-A7
Additional Observations:
K12Y07J C2023 07 23.16750118 51 52.997-36 24 42.62 16.48oVEO069W68
K12Y07J C2023 07 23.17569018 51 59.395-36 22 25.10 16.98oVEO069W68
K12Y07J C2023 07 23.18513718 52 06.746-36 19 46.24 16.89oVEO069W68
K12Y07J KB2023 07 24.09967819 02 33.540-32 47 54.02 16.2 GXEO069Y01
K12Y07J KB2023 07 24.10860119 02 37.750-32 46 09.82 16.6 GXEO069Y01
K12Y07J KB2023 07 24.11751319 02 41.905-32 44 26.09 16.6 GXEO069Y01
K12Y07J [C2023 07 24.37175 19 05 03.374-31 56 37.32 17.7 GVEO069Q62
K12Y07J [C2023 07 24.37350 19 05 04.154-31 56 19.68 17.5 GVEO069Q62
K12Y07J [C2023 07 24.37638 19 05 05.472-31 55 50.34 17.5 GVEO069Q62
K12Y07J KC2023 07 24.39687019 05 10.97 -31 52 08.6 17.5 GVEO069474
K12Y07J KC2023 07 24.39918319 05 11.96 -31 51 44.6 17.6 GVEO069474
K12Y07J KC2023 07 24.40033819 05 12.48 -31 51 32.8 17.5 GVEO069474
K12Y07J KC2023 07 24.40168519 05 13.03 -31 51 19.0 17.7 GVEO069474
K12Y07J KC2023 07 24.53047 19 06 09.13 -31 29 59.7 17.6 VqEO069E23
K12Y07J KC2023 07 24.54123119 06 15.79 -31 30 29.5 17.5 GVEO069900
K12Y07J KC2023 07 24.54205 19 06 13.66 -31 28 04.8 17.5 VqEO069E23
K12Y07J KC2023 07 24.54242119 06 16.22 -31 30 17.6 17.5 GVEO069900
K12Y07J KC2023 07 24.55362 19 06 18.18 -31 26 09.7 17.6 VqEO069E23
Observer details:
474 Mount John Observatory, Lake Tekapo. Observers A. C. Gilmore, P. M.
Kilmartin. Measurer P. M. Kilmartin. 0.6-m f/6.2 reflector + CCD.
900 Moriyama. Observer Y. Ikari. 0.26-m f/7.0 reflector + CCD.
E23 Arcadia. Observer A. Hidas. 0.35-m f/1.9 reflector + CCD.
Q62 iTelescope Observatory, Siding Spring. Observer M. Suzuki. 0.28-m f/2.2
reflector + CCD.
W68 ATLAS Chile, Rio Hurtado. Observers L. Denneau, R. Siverd, J. Tonry, H.
Weiland. Measurers L. Denneau, N. Erasmus, A. Fitzsimmons, A. Lawrence,
J. Robinson, R. Siverd, J. Tonry, H. Weiland. 0.5-m Reflector + CCD.
Y01 SONEAR 2 Observatory, Belo Horizonte. Observers C. Jacques, A. Caetano,
E. Pimentel. Measurer C. Jacques. 0.28-m f/2.2 astrograph + CMO.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or zero decimals in degrees), reference and Delta-T
230723 W68 86+ 33+ 230724 E23 92+ 27+ MPO250162 +16.1 days
Orbital elements:
2012 YJ7 Earth MOID = 0.0144 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 51.55597 (2000.0) P Q
n 0.48037291 Peri. 255.04890 -0.92360256 +0.37927975
a 1.6146698 Node 307.20899 -0.31931757 -0.84158780
e 0.6264447 Incl. 4.01210 -0.21211933 -0.38454760
P 2.05 H 22.57 G 0.15 U 1
Residuals in seconds of arc
121222 F51 0.1- 0.1- 130105 291 0.2- 0.1+ 230724 474 0.1+ 0.3-
121222 F51 0.0 0.1- 130105 291 0.3- 0.2+ 230724 474 0.0 0.0
121222 F51 0.1- 0.0 230723 W68 0.1+ 0.4+ 230724 474 0.3+ 0.0
121223 H01 0.2- 0.0 230723 W68 0.0 0.1- 230724 474 0.1- 0.0
121223 H01 0.4- 0.1- 230723 W68 0.1- 0.2- 230724 E23 0.0 0.4+
121223 H01 0.4- 0.2- 230724 Y01 0.3+ 0.3- 230724 900 0.5+ 0.2+
121223 H01 0.1- 0.0 230724 Y01 0.5+ 0.3- 230724 E23 0.1- 0.1+
130102 H36 1.0+ 0.0 230724 Y01 0.2+ 0.7- 230724 900 0.0 0.3+
130102 H36 0.6+ 0.3- 230724 Q62 0.0 0.0 230724 E23 0.0 0.2+
130102 H36 0.4+ 0.4- 230724 Q62 0.1- 0.1-
130105 291 0.1+ 0.1+ 230724 Q62 0.1+ 0.0
Ephemeris:
2012 YJ7 a,e,i = 1.61, 0.63, 4 q = 0.6032
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 06 24 07 42 31.8 +14 18 08 0.3027 0.7501 24.0 146.6 27.2
...
2023 07 09 07 56 42.2 +08 36 51 0.1185 0.9045 17.7 160.0 28.7
...
2023 07 17 08 40 34.4 -14 19 46 0.03220 0.9914 38.4 140.5 22.0
...
2023 07 23 18 49 21.2 -37 13 11 0.04415 1.0565 156.0 23.0 17.0
2023 07 24 19 01 39.2 -33 07 07 0.05460 1.0673 159.8 19.2 17.4
2023 07 25 19 09 22.2 -30 18 04 0.06532 1.0781 161.8 17.1 17.7
...
2023 07 31 19 27 29.7 -23 06 50 0.1323 1.1422 162.8 15.3 19.3
...
2023 08 08 19 35 33.0 -20 13 57 0.2261 1.2259 157.4 18.5 20.7
...
2023 08 23 19 45 44.8 -18 21 10 0.4170 1.3759 145.6 24.5 22.5
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