[Iaude] MPEC E12: 2018 DB4 [a=1.69,e=0.41,i=4.3,H=24.5]
mpec at mpcdb1.cfa.harvard.edu
mpec at mpcdb1.cfa.harvard.edu
Sun Mar 4 12:43:16 EST 2018
M.P.E.C. 2018-E12 Issued 2018 Mar. 4, 17:39 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 at CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2018 DB4
Observations:
K18D04B* C2018 02 26.40256 12 08 52.34 -05 50 42.7 20.7 GUEE012G96
K18D04B C2018 02 26.40786 12 08 54.90 -05 50 47.2 20.4 GUEE012G96
K18D04B C2018 02 26.41317 12 08 57.58 -05 50 52.4 UEE012G96
K18D04B C2018 02 26.41848 12 09 00.26 -05 50 55.0 UEE012G96
K18D04B C2018 02 26.48788 12 09 35.15 -05 51 49.3 20.6 GUEE012I52
K18D04B C2018 02 26.48954 12 09 35.96 -05 51 50.3 20.3 GUEE012I52
K18D04B C2018 02 26.49121 12 09 36.86 -05 51 51.3 20.5 GUEE012I52
K18D04B C2018 02 26.49287 12 09 37.70 -05 51 52.5 20.0 GUEE012I52
K18D04B KC2018 02 27.32108 12 17 20.85 -06 02 52.2 20.6 RoEE012291
K18D04B KC2018 02 27.32802 12 17 24.60 -06 02 58.0 20.5 RoEE012291
K18D04B KC2018 02 27.33489 12 17 28.31 -06 03 03.7 20.6 RoEE012291
K18D04B |C2018 03 01.28086 12 37 30.17 -06 26 51.7 20.2 GUEE012807
K18D04B |C2018 03 01.28505 12 37 32.80 -06 26 55.0 20.1 GUEE012807
K18D04B |C2018 03 01.28935 12 37 35.51 -06 26 58.2 20.2 GUEE012807
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.
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.
Orbital elements:
2018 DB4 Earth MOID = 0.0249 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 353.56814 (2000.0) P Q
n 0.44972902 Peri. 38.53137 -0.91605531 +0.40058862
a 1.6872086 Node 165.04836 -0.38398242 -0.86218263
e 0.4145272 Incl. 4.28387 -0.11575909 -0.31011268
P 2.19 H 24.5 G 0.15 U 8
Residuals in seconds of arc
180226 G96 0.6+ 0.2+ 180226 I52 0.6- 0.0 180227 291 0.1+ 0.0
180226 G96 0.6- 0.1- 180226 I52 0.2+ 0.3+ 180301 807 0.1+ 0.0
180226 G96 0.1- 1.2- 180226 I52 0.1+ 0.3+ 180301 807 0.1- 0.1-
180226 G96 0.4+ 0.4+ 180227 291 0.1- 0.2+ 180301 807 0.0 0.0
180226 I52 0.1- 0.3- 180227 291 0.0 0.1+
Ephemeris:
2018 DB4 a,e,i = 1.69, 0.41, 4 q = 0.9878
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 02 02 10 25 52.5 -01 10 52 0.2321 1.1959 152.3 22.5 22.8
...
2018 02 17 11 09 51.8 -03 53 12 0.1401 1.1180 156.5 20.6 21.5
...
2018 02 25 11 57 09.0 -05 31 20 0.1010 1.0815 154.0 23.6 20.8
...
2018 03 03 12 57 56.3 -06 48 56 0.07840 1.0572 146.1 31.5 20.4
2018 03 04 13 11 05.5 -07 00 23 0.07543 1.0535 144.0 33.5 20.4
2018 03 05 13 25 11.7 -07 10 41 0.07274 1.0498 141.7 35.8 20.4
...
2018 03 11 15 06 31.8 -07 27 14 0.06380 1.0297 123.3 53.8 20.6
...
2018 03 19 17 19 36.5 -05 28 03 0.07273 1.0085 98.2 77.7 21.5
...
2018 04 03 19 23 26.3 -01 53 39 0.1228 0.9885 81.3 91.7 23.2
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-E12
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