MPEC 2023-O09 : 2018 GJ2
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M.P.E.C. 2023-O09 Issued 2023 July 16, 14:12 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
2018 GJ2
Revision to MPEC 2018-G78
Additional Observations:
K18G02J C2017 04 06.55030016 49 26.296-38 19 40.12 22.79GVEO009F51
K18G02J C2017 04 06.57101316 49 24.947-38 20 10.36 22.20GVEO009F51
K18G02J C2017 05 25.35659114 15 44.234-47 42 33.17 22.12GVEO009F51
K18G02J C2017 05 25.36438414 15 42.632-47 42 28.74 21.33GVEO009F51
K18G02J C2019 05 25.26294508 33 55.832+23 13 27.75 22.26GVEO009F51
K18G02J C2019 05 25.26768308 33 57.086+23 13 19.17 22.92GVEO009F51
K18G02J |C2023 07 15.26871 22 42 56.34 -76 28 31.2 21.1 VuEO009807
K18G02J |C2023 07 15.27468 22 42 56.21 -76 28 45.9 21.4 VuEO009807
K18G02J |C2023 07 15.28066 22 42 56.05 -76 29 01.0 21.2 VuEO009807
Observer details:
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes, L.
Horn. 0.61-m f/6.5 Dall-Kirkham Astrograph + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, P.
Minguez, A. Schultz, I. Smith. Measurers S. Chastel, J. Fairlamb, M.
Huber, Y. Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien +
CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
170406 F51 0.00+ 0.00+ 230715 807 0.04+ 0.03+ MPO750185 -0.02 days
Orbital elements:
2018 GJ2 Earth MOID = 0.1150 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Veres
M 148.24838 (2000.0) P Q
n 0.84856202 Peri. 52.42512 +0.39599962 -0.91522036
a 1.1049611 Node 14.79537 +0.72328352 +0.26087900
e 0.4118831 Incl. 16.97097 +0.56572543 +0.30710558
P 1.16 H 20.60 G 0.15 U 1
Residuals in seconds of arc
170406 F51 0.0 0.2- 180412 I52 0.3- 0.3- 180419 I52 0.2- 0.1-
170406 F51 0.1- 0.1- 180412 I52 0.7+ 0.0 180419 I52 0.1+ 0.2-
170525 F51 0.0 0.0 180412 711 0.1- 0.0 180420 G96 0.2+ 0.3-
170525 F51 0.0 0.7- 180412 711 0.1+ 0.4+ 180420 G96 0.2+ 0.7-
180319 C51 0.6- 1.0+ 180412 711 0.3- 0.1+ 180420 G96 1.6+ 0.7-
180320 C51 0.5+ 0.6- 180412 691 0.1+ 0.1- 180420 I52 0.3+ 0.1+
180411 G96 0.2- 0.2+ 180412 691 0.3- 0.1+ 180420 I52 0.3- 0.0
180411 G96 0.0 0.0 180412 691 0.3- 0.3+ 180420 G96 0.0 0.2+
180411 G96 0.1- 0.0 180412 E23 1.0+ 0.3+ 180421 I52 0.1- 0.3+
180411 G96 0.0 0.1- 180412 E23 0.6- 0.8+ 180421 I52 0.2+ 0.3-
180411 I52 0.1+ 0.0 180412 E23 0.1+ 0.4+ 180421 I52 0.3+ 0.6-
180411 I52 0.1+ 0.0 180413 I52 0.7- 0.7- 180421 I52 0.1+ 0.5-
180411 I52 0.0 0.0 180413 I52 0.2- 0.0 180423 691 0.4- 0.1-
180411 I52 0.1- 0.1- 180413 I52 0.5- 0.2+ 180423 691 0.4- 0.2+
180411 I52 0.1- 0.1+ 180413 I52 0.0 0.5+ 180423 691 0.4+ 1.0+
180411 I52 0.3- 0.5- 180415 I52 0.0 0.4+ 180504 691 0.7+ 1.0+
180411 I52 0.1+ 0.0 180415 I52 0.0 0.4- 180504 691 0.1+ 0.2+
180411 I52 0.1- 0.1+ 180415 I52 0.2- 0.1+ 180508 I52 0.2+ 0.9+
180411 K88 0.3- 0.1- 180415 I52 0.0 0.1+ 180508 I52 0.6+ 0.3+
180411 K88 0.4- 0.2- 180416 I52 1.1+ 1.0+ 180508 I52 0.1+ 0.0
180411 K88 0.1- 0.1- 180416 I52 0.1+ 0.6+ 180516 691 0.3- 0.2+
180411 K88 0.1- 0.1- 180418 204 0.1- 0.3+ 180516 691 0.3+ 0.4+
180411 033 0.7- 0.4- 180418 204 0.2+ 0.0 180516 691 0.4- 0.3-
180411 033 0.1- 0.1+ 180419 807 0.1- 0.8- 190525 F51 0.1+ 0.0
180411 033 0.5- 0.2+ 180419 807 0.5- 0.2- 190525 F51 0.5- 0.0
180412 W34 0.1- 0.1+ 180419 807 0.2- 0.1+ 230715 807 0.3- 0.8-
180412 W34 0.0 0.2+ 180419 I52 0.3- 0.0 230715 807 0.0 0.4-
180412 I52 0.0 0.9+ 180419 I52 0.2- 0.2- 230715 807 0.3+ 0.4-
Ephemeris:
2018 GJ2 a,e,i = 1.10, 0.41, 17 q = 0.6498
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 06 16 22 05 27.2 -58 51 54 0.6003 1.4235 121.3 37.6 21.8
...
2023 07 01 22 30 44.3 -67 07 56 0.5053 1.3616 123.4 38.6 21.3
...
2023 07 09 22 40 14.7 -72 13 12 0.4631 1.3238 122.4 40.4 21.1
...
2023 07 15 22 42 56.6 -76 17 06 0.4351 1.2932 120.6 42.6 21.0
2023 07 16 22 42 43.4 -76 58 41 0.4307 1.2880 120.2 43.0 21.0
2023 07 17 22 42 13.6 -77 40 28 0.4264 1.2827 119.8 43.5 21.0
...
2023 07 23 22 29 26.5 -81 53 11 0.4021 1.2497 116.7 46.6 20.9
...
2023 07 31 20 17 43.6 -86 58 58 0.3730 1.2029 111.5 51.8 20.8
...
2023 08 15 13 13 37.8 -79 45 27 0.3244 1.1069 98.2 64.9 20.7
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-O09
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