MPEC 2023-E44 : 2018 DA2
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M.P.E.C. 2023-E44 Issued 2023 March 5, 14:06 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 DA2
Revision to MPEC 2018-D82
Additional Observations:
K18D02A KC2023 02 28.41345713 33 39.301-14 10 49.15 20.17GVEE044I52
K18D02A KC2023 02 28.42117813 33 38.808-14 11 28.39 21.43GVEE044I52
K18D02A KC2023 02 28.42503813 33 38.545-14 11 47.98 21.07GVEE044I52
K18D02A 6C2023 03 03.01375913 30 47.963-18 18 42.64 21.2 GVEE044Z84
K18D02A 6C2023 03 03.03879413 30 45.427-18 21 24.50 20.8 GVEE044Z84
Observer details:
I52 Steward Observatory, Mt. Lemmon Station. Observer 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.
Z84 Calar Alto-Schmidt. Observers M. Micheli, R. Kresken. Measurers R.
Kresken, M. Micheli, F. Ocana, L. Conversi. 0.8-m f/3 Schmidt + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
230228 I52 0.19- 0.14- 230303 Z84 0.23- 0.16- MPO446983 -0.02 days
Orbital elements:
2018 DA2 Earth MOID = 0.0836 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Veres
M 248.55182 (2000.0) P Q
n 1.18870958 Peri. 328.63431 +0.68780096 +0.72087151
a 0.8825762 Node 344.25945 -0.58376419 +0.47946047
e 0.4507071 Incl. 18.32402 -0.43145012 +0.50046171
P 0.83 H 23.29 G 0.15 U 1
Residuals in seconds of arc
180225 G96 0.6+ 0.1- 180306 807 0.0 0.1+ 180314 I52 0.2- 0.0
180225 G96 0.4+ 0.7+ 180306 807 0.3+ 0.1+ 180314 I52 0.2- 0.3+
180225 G96 0.4+ 0.2+ 180306 807 0.1+ 0.3- 180314 I52 0.4- 0.2-
180225 G96 0.0 0.2- 180306 I52 0.1+ 0.2+ 180318 474 0.3- 0.4-
180225 I52 0.2+ 0.1+ 180306 I52 0.2+ 0.3+ 180318 474 0.1- 0.3-
180225 I52 0.1+ 0.7- 180306 I52 0.1- 0.1+ 180318 474 1.0+ 0.9+
180225 I52 0.2- 0.6+ 180306 H21 0.2+ 0.3- 180318 474 1.0- 0.8+
180225 I52 0.6- 0.1+ 180306 H21 0.0 0.4- 180319 291 0.0 0.2+
180226 807 0.0 0.3- 180306 H21 0.3+ 0.4- 180319 291 0.0 0.4+
180226 807 0.0 0.1- 180307 I52 0.1- 0.0 180319 291 0.1- 0.1+
180226 807 0.0 0.1- 180307 I52 0.0 0.1- 180405 807 0.1+ 0.1+
180226 I52 0.3- 0.1- 180307 I52 0.1- 0.0 180405 807 0.1+ 0.1-
180226 I52 0.2- 0.0 180307 I52 0.0 0.3+ 180405 807 0.0 0.2-
180226 I52 0.6- 0.1+ 180310 474 0.2- 0.1- 230228 I52 0.2- 0.1-
180226 I52 0.5- 0.2- 180310 474 0.0 0.2- 230228 I52 0.3+ 0.0
180227 I52 0.0 0.1+ 180310 474 0.1- 0.2- 230228 I52 0.3+ 0.1+
180227 I52 0.2- 0.4- 180310 474 0.2+ 0.2- 230303 Z84 0.4+ 0.0
180227 I52 0.2- 0.7+ 180314 I52 0.2- 0.4- 230303 Z84 0.6- 0.2+
Ephemeris:
2018 DA2 a,e,i = 0.88, 0.45, 18 q = 0.4848
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 02 03 13 27 35.8 +03 06 48 0.4349 1.2283 114.0 47.1 23.7
...
2023 02 18 13 36 07.9 -04 01 21 0.2856 1.1749 124.8 43.7 22.6
...
2023 02 26 13 35 16.7 -11 04 45 0.2106 1.1384 130.7 41.3 21.8
...
2023 03 04 13 29 16.4 -20 08 24 0.1590 1.1075 133.8 40.2 21.1
2023 03 05 13 27 28.3 -22 11 30 0.1511 1.1020 134.0 40.3 21.0
2023 03 06 13 25 19.6 -24 27 10 0.1434 1.0964 134.1 40.5 20.9
...
2023 03 12 12 58 57.4 -43 53 54 0.1047 1.0612 128.1 47.4 20.3
...
2023 03 20 07 49 52.1 -76 20 54 0.09165 1.0093 96.0 78.8 20.9
...
2023 04 04 02 38 43.5 -39 09 46 0.1816 0.8970 51.1 119.8 24.2
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-E44
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