MPEC 2018-E11 : 2018 DA4
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M.P.E.C. 2018-E11 Issued 2018 Mar. 4, 17:36 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. 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 DA4
Observations:
K18D04A* C2018 02 26.31526 12 46 28.48 +26 12 52.8 19.5 GUEE011G96
K18D04A C2018 02 26.32053 12 46 24.90 +26 12 51.4 19.4 GUEE011G96
K18D04A C2018 02 26.32582 12 46 21.28 +26 12 50.1 19.4 GUEE011G96
K18D04A C2018 02 26.33109 12 46 17.72 +26 12 48.5 19.5 GUEE011G96
K18D04A KC2018 02 26.40795512 45 24.66 +26 12 21.3 19.3 VuEE011H21
K18D04A KC2018 02 26.41095912 45 22.63 +26 12 20.5 19.6 VuEE011H21
K18D04A KC2018 02 26.41579912 45 19.35 +26 12 18.8 19.6 VuEE011H21
K18D04A C2018 02 26.43018 12 45 10.23 +26 12 18.9 19.0 GUEE011I52
K18D04A C2018 02 26.43059 12 45 09.94 +26 12 18.5 19.1 GUEE011I52
K18D04A C2018 02 26.43101 12 45 09.66 +26 12 18.5 19.0 GUEE011I52
K18D04A C2018 02 26.43488 12 45 07.03 +26 12 16.9 19.2 GUEE011I52
K18D04A KC2018 02 26.44397 12 45 00.48 +26 12 10.3 19.8 RqEE011H36
K18D04A KC2018 02 26.45030 12 44 56.12 +26 12 07.5 19.2 RqEE011H36
K18D04A KC2018 02 26.45659 12 44 51.83 +26 12 05.1 19.8 RqEE011H36
K18D04A C2018 02 26.53319 12 44 00.49 +26 11 40.8 19.1 GUEE011G96
K18D04A C2018 02 26.53359 12 44 00.21 +26 11 40.8 19.3 GUEE011G96
K18D04A C2018 02 26.53400 12 43 59.95 +26 11 40.7 19.5 GUEE011G96
K18D04A C2018 02 26.53440 12 43 59.65 +26 11 40.8 19.5 GUEE011G96
K18D04A KC2018 02 27.22321 12 36 31.16 +26 06 55.8 19.4 RoEE011291
K18D04A KC2018 02 27.22540 12 36 29.73 +26 06 55.1 19.3 RoEE011291
K18D04A KC2018 02 27.22758 12 36 28.29 +26 06 53.9 19.4 RoEE011291
K18D04A C2018 02 27.30810 12 35 35.72 +26 06 18.9 19.2 GUEE011I52
K18D04A C2018 02 27.30852 12 35 35.49 +26 06 18.4 18.9 GUEE011I52
K18D04A C2018 02 27.30893 12 35 35.18 +26 06 18.1 19.1 GUEE011I52
K18D04A C2018 02 27.30935 12 35 34.88 +26 06 18.1 19.3 GUEE011I52
K18D04A KC2018 02 27.33809212 35 15.38 +26 06 02.2 19.9 VuEE011H21
K18D04A KC2018 02 27.34067312 35 13.69 +26 06 00.9 19.8 VuEE011H21
K18D04A KC2018 02 27.34347212 35 11.86 +26 05 59.4 19.7 VuEE011H21
K18D04A C2018 02 27.52960 12 33 11.50 +26 04 23.8 19.4 GUEE011G96
K18D04A C2018 02 27.53001 12 33 11.22 +26 04 23.0 19.1 GUEE011G96
K18D04A C2018 02 27.53185 12 33 10.04 +26 04 22.5 19.5 GUEE011G96
K18D04A C2018 02 27.53225 12 33 09.78 +26 04 22.1 19.5 GUEE011G96
K18D04A KC2018 02 27.96784 12 28 37.26 +26 00 10.5 19.1 GUEE011K38
K18D04A KC2018 02 28.00015 12 28 16.78 +25 59 51.3 19.1 GUEE011K38
K18D04A KC2018 02 28.03244 12 27 56.37 +25 59 31.7 19.0 GUEE011K38
K18D04A |C2018 03 01.25500 12 15 37.49 +25 45 36.9 19.3 GUEE011807
K18D04A |C2018 03 01.25852 12 15 35.40 +25 45 34.3 19.1 GUEE011807
K18D04A |C2018 03 01.26181 12 15 33.43 +25 45 31.8 19.4 GUEE011807
Observer details:
291 LPL/Spacewatch II. Observer M. J. Brucker. 1.8-m f/2.7 reflector + CCD.
807 Cerro Tololo. Observers T. Linder, R. Holmes. 1.00-m f/10.0 astrograph
+ CCD.
G96 Mt. Lemmon Survey. Observer G. J. Leonard. Measurers E. J. Christensen,
D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly.
1.5-m reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.61-m f/4.5
astrograph + CCD.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer R. A. Kowalski.
Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny,
R. L. Seaman, F. C. Shelly. 1.0-m reflector + CCD.
K38 M57 Observatory, Saltrio. Observer G. Baj. 0.30-m f/5.5 Ritchey-Chretien
+ CCD.
Orbital elements:
2018 DA4 Earth MOID = 0.1693 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 54.29820 (2000.0) P Q
n 0.62707589 Peri. 24.74498 +0.92295422 -0.38461162
a 1.3518318 Node 357.70691 +0.25880893 +0.64922977
e 0.7895841 Incl. 22.24354 +0.28490953 +0.65618184
P 1.57 H 20.6 G 0.15 U 8
Residuals in seconds of arc
180226 G96 0.2- 0.1+ 180226 H36 1.0- 0.1- 180227 H21 0.0 0.2+
180226 G96 0.0 0.1+ 180226 G96 0.3+ 0.3- 180227 H21 0.0 0.1+
180226 G96 0.2- 0.2+ 180226 G96 0.2+ 0.1- 180227 G96 0.2+ 0.3+
180226 G96 0.2+ 0.0 180226 G96 0.4+ 0.1- 180227 G96 0.0 0.2-
180226 H21 0.0 0.1- 180226 G96 0.0 0.2+ 180227 G96 0.0 0.3+
180226 H21 0.1+ 0.1+ 180227 291 0.3+ 0.3+ 180227 G96 0.0 0.2+
180226 H21 0.1+ 0.1+ 180227 291 0.2+ 0.5+ 180227 K38 0.1- 0.4+
180226 I52 0.2+ 0.2+ 180227 291 0.0 0.2+ 180228 K38 0.6- 0.0
180226 I52 0.0 0.1- 180227 I52 0.1+ 0.2+ 180228 K38 0.5- 0.3-
180226 I52 0.1+ 0.1+ 180227 I52 0.7+ 0.1- 180301 807 0.0 0.2-
180226 I52 0.1+ 0.2- 180227 I52 0.2+ 0.3- 180301 807 0.2+ 0.0
180226 H36 0.5+ 0.5+ 180227 I52 0.2- 0.1- 180301 807 0.2+ 0.1+
180226 H36 0.5- 0.0 180227 H21 0.0 0.2+
Ephemeris:
2018 DA4 a,e,i = 1.35, 0.79, 22 q = 0.2844
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 02 02 17 13 05.8 +12 02 23 0.3157 0.8898 63.4 98.1 21.4
...
2018 02 17 14 42 24.2 +23 55 09 0.2576 1.1130 112.6 55.0 19.9
...
2018 02 25 13 01 33.0 +26 16 24 0.2804 1.2196 140.6 31.0 19.6
...
2018 03 03 11 59 21.4 +25 18 59 0.3249 1.2947 156.0 18.2 19.7
2018 03 04 11 50 43.3 +25 01 38 0.3342 1.3068 157.7 16.8 19.7
2018 03 05 11 42 34.7 +24 43 02 0.3441 1.3188 159.1 15.6 19.7
...
2018 03 11 11 03 09.7 +22 39 03 0.4121 1.3888 160.6 13.7 20.2
...
2018 03 19 10 30 11.7 +19 58 45 0.5216 1.4767 152.1 18.4 21.0
...
2018 04 03 10 02 43.4 +16 05 34 0.7642 1.6265 134.0 26.2 22.3
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-E11
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