MPEC 2019-P31 : 2009 DB1
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M.P.E.C. 2019-P31 Issued 2019 August 2, 23:41 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
2009 DB1
Revision to MPEC 2009-D29
Additional Observations:
K09D01B C2015 06 17.55419520 31 12.626-05 49 03.50 23.8 GVEP031F51
K09D01B C2015 06 19.52929520 32 02.767-05 21 24.92 23.4 GVEP031F51
K09D01B C2015 06 19.54230820 32 02.960-05 21 14.03 24.1 GVEP031F51
K09D01B C2015 06 27.52099120 33 55.034-03 19 44.75 22.8 GVEP031F51
K09D01B C2015 06 27.53346220 33 54.947-03 19 32.52 22.6 GVEP031F51
K09D01B C2015 06 28.45129420 33 58.344-03 04 18.72 23.0 GVEP031F51
K09D01B C2015 06 28.47715520 33 58.143-03 03 52.82 22.1 GVEP031F51
K09D01B C2015 06 28.49004720 33 58.041-03 03 40.19 22.0 GVEP031F51
K09D01B C2015 07 15.41804 20 25 24.137+03 07 20.44 21.1 wLEP031F51
K09D01B C2015 07 15.44200 20 25 21.943+03 08 04.04 21.2 wLEP031F51
K09D01B C2015 07 15.45408 20 25 20.811+03 08 25.85 20.9 wLEP031F51
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe,
E. Magnier, A. Schultz, M. Willman, B. Gibson, T. Goggia, N. Primak.
Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R. Wainscoat, R. Weryk,
K. Chambers, L. Denneau, H. Flewelling, E. Lilly, E. Magnier, C. Waters.
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
150617 F51 0.52+ 0.09+ 150715 F51 1.30+ 0.35+ MPO156184 0.53 days
Orbital elements:
2009 DB1 Earth MOID = 0.0387 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5 (M-h) MPC
M 216.29860 (2000.0) P Q
n 0.72203700 Peri. 239.98606 +0.67112460 -0.74116509
a 1.2305419 Node 167.81775 +0.70401715 +0.63028461
e 0.4398608 Incl. 4.43336 +0.23227489 +0.23111819
P 1.37 H 23.1 G 0.15 U 3
Residuals in seconds of arc
090219 703 0.3+ 0.7+ 090219 595 0.3- 0.2- 090224 703 0.8+ 0.0
090219 703 1.3- 0.1+ 090219 143 0.7+ 0.4- 090224 703 0.5+ 0.8+
090219 703 1.0- 1.0- 090219 595 0.4+ 0.3- 090224 703 0.8- 0.2-
090219 703 0.5- 0.2+ 090219 204 0.3- 0.1- 090224 703 0.6- 0.1+
090219 703 0.7+ 1.8- 090219 595 0.1+ 0.2- 090228 291 0.7+ 0.3+
090219 703 0.5- 0.0 090219 204 0.2- 0.1- 090228 291 0.4- 0.1+
090219 703 0.8- 0.2- 090219 A24 0.7+ 1.7+ 090228 291 0.4- 0.1+
090219 H01 0.3- 0.3- 090219 A24 1.4+ 1.7+ 090315 291 0.0 0.2-
090219 H01 0.2- 0.1- 090219 A24 0.9+ 0.8+ 090315 291 0.2- 0.1+
090219 854 0.5+ 0.8+ 090219 941 0.6- 0.2+ 090315 291 0.1- 0.0
090219 854 0.7+ 0.2- 090219 941 0.6- 0.0 090316 291 0.5- 0.5+
090219 H01 0.3- 0.1- 090219 941 0.7+ 0.2- 090316 291 0.3- 0.4+
090219 854 0.8- 0.9- 090219 941 1.1+ 0.8- 090316 291 0.8- 0.2+
090219 H01 0.3- 0.2- 090219 A13 0.3+ 0.1+ 150617 F51 0.1+ 0.3-
090219 H01 0.2- 0.0 090219 A13 0.6+ 0.5+ 150619 F51 0.0 0.2+
090219 493 0.3- 0.3- 090219 A13 0.5+ 0.7+ 150619 F51 0.1- 0.0
090219 493 0.2- 0.3- 090219 A13 0.4+ 0.5+ 150627 F51 0.3+ 0.1+
090219 493 0.2- 0.1- 090223 H55 0.2+ 0.0 150627 F51 0.0 0.0
090219 143 0.3+ 0.5- 090223 H55 0.3+ 0.1- 150628 F51 0.0 0.1+
090219 587 0.8+ 0.2- 090223 H55 0.0 0.1+ 150628 F51 0.0 0.0
090219 587 1.8- 0.5- 090223 H55 0.1+ 0.1+ 150628 F51 0.0 0.3-
090219 143 0.1- 0.1- 090224 H55 0.1- 0.1- 150715 F51 0.1- 0.1+
090219 587 0.2- 0.2- 090224 H55 0.4- 0.0 150715 F51 0.0 0.1+
090219 587 0.5+ 0.6+ 090224 H55 0.1- 0.1- 150715 F51 0.2- 0.1-
Ephemeris:
2009 DB1 a,e,i = 1.23, 0.44, 4 q = 0.6893
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2019 07 03 16 27 08.3 -09 24 20 0.5327 1.4818 144.1 23.7 23.7
...
2019 07 18 15 58 53.3 -09 33 34 0.5512 1.4015 124.1 36.9 24.0
...
2019 07 26 15 49 50.0 -10 02 44 0.5681 1.3546 114.6 43.0 24.2
...
2019 08 01 15 45 47.3 -10 34 08 0.5814 1.3177 108.2 47.1 24.3
2019 08 02 15 45 19.9 -10 40 05 0.5836 1.3114 107.1 47.7 24.3
2019 08 03 15 44 56.2 -10 46 13 0.5857 1.3050 106.1 48.3 24.3
...
2019 08 09 15 43 46.1 -11 26 45 0.5977 1.2661 100.3 52.0 24.4
...
2019 08 17 15 45 05.7 -12 29 10 0.6102 1.2119 93.3 56.5 24.5
...
2019 09 01 15 54 41.9 -14 45 25 0.6171 1.1044 81.7 64.7 24.6
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