[Iaude] MPEC Q148: 2020 HW9 [a=1.95,e=0.83,i=22.1,H=19.1]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Fri Aug 21 11:08:28 EDT 2020
M.P.E.C. 2020-Q148 Issued 2020 August 21, 15:07 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
2020 HW9
Revision to MPEC 2020-J06
Additional Observations:
K20H09W C2011 06 26.52273819 58 47.249-04 22 31.60 21.77GVEQ148F51
K20H09W C2011 06 26.53218819 58 46.531-04 22 32.31 22.45GVEQ148F51
K20H09W C2012 05 09.57323016 26 51.273+18 41 50.32 21.25GVEQ148F51
K20H09W C2012 05 16.53824316 11 22.658+18 47 51.65 21.70GVEQ148F51
K20H09W C2012 05 16.53887516 11 22.585+18 47 51.24 21.25GVEQ148F51
K20H09W C2012 05 16.55935916 11 19.898+18 47 49.54 21.33GVEQ148F51
K20H09W C2012 05 16.56906016 11 18.618+18 47 49.18 21.40GVEQ148F51
K20H09W C2012 05 16.56966716 11 18.550+18 47 49.28 21.56GVEQ148F51
K20H09W C2014 06 14.54707322 29 48.116-01 44 43.52 21.50GVEQ148F51
K20H09W C2014 06 14.55876222 29 49.136-01 44 39.63 22.05GVEQ148F51
K20H09W C2014 06 14.57041722 29 50.087-01 44 35.72 22.43GVEQ148F51
K20H09W C2014 06 14.58204722 29 51.069-01 44 31.90 21.46GVEQ148F51
K20H09W C2014 06 24.52958 22 45 03.670-00 52 41.39 21.3 wLEQ148F51
K20H09W C2014 06 24.54198 22 45 04.852-00 52 37.99 21.3 wLEQ148F51
K20H09W C2014 06 24.55365 22 45 05.959-00 52 34.56 21.3 wLEQ148F51
K20H09W C2014 06 24.56531 22 45 07.064-00 52 31.05 21.3 wLEQ148F51
K20H09W C2014 07 02.60778422 59 20.440-00 16 56.93 21.56GVEQ148F51
K20H09W C2014 07 02.61144822 59 20.836-00 16 55.90 22.06GVEQ148F51
K20H09W C2014 07 10.58321 23 16 47.674+00 09 37.26 20.2 iLEQ148F51
K20H09W C2014 07 10.59009 23 16 48.677+00 09 38.23 20.1 iLEQ148F51
K20H09W C2014 07 10.59697 23 16 49.673+00 09 39.37 20.2 iLEQ148F51
K20H09W C2014 07 10.60387 23 16 50.680+00 09 40.39 20.0 iLEQ148F51
K20H09W C2014 07 29.56138000 43 49.802-00 06 48.14 18.69GVEQ148F51
K20H09W C2014 07 29.57371300 43 56.205-00 06 53.33 18.73GVEQ148F51
K20H09W C2014 07 29.58609800 44 02.643-00 06 58.52 18.83GVEQ148F51
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, M. Willman, N. Primak, T. Goggia. Measurers S. Chastel, 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
110626 F51 0.03- 0.00- 140729 F51 0.28- 0.05- MPO554970 +0.00 days
Orbital elements:
2020 HW9 Earth MOID = 0.0655 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5 Veres
M 32.28497 (2000.0) P Q
n 0.36244188 Peri. 309.34882 +0.03414169 -0.96536124
a 1.9482460 Node 136.45778 +0.99289535 +0.00324311
e 0.8308450 Incl. 22.05484 +0.11398758 +0.26089683
P 2.72 H 19.1 G 0.15 U 1
Residuals in seconds of arc
110626 F51 0.1+ 0.2- 200429 I52 0.3+ 0.2- 200504 I52 0.2+ 0.1+
110626 F51 0.4+ 0.3+ 200429 I52 0.2+ 0.2+ 200504 H21 0.4+ 0.1+
120509 F51 0.8- 0.1- 200429 I52 0.1- 0.4+ 200504 I52 0.6+ 0.1+
120516 F51 0.5- 0.2+ 200429 K63 0.8+ 0.8- 200504 H21 0.2+ 0.1+
120516 F51 0.4- 0.1- 200429 K63 0.1+ 0.1+ 200504 F52 0.1+ 0.0
120516 F51 0.1- 0.5- 200429 K63 0.0 0.4- 200504 F52 0.0 0.1+
120516 F51 0.1- 0.2- 200429 203 0.1+ 0.0 200504 F52 0.0 0.0
120516 F51 0.1+ 0.0 200429 203 0.3+ 0.2+ 200506 I52 0.3- 0.4-
140614 F51 0.1- 0.0 200429 203 0.3+ 0.1+ 200506 I52 0.9- 0.5-
140614 F51 0.5+ 0.0 200430 L01 0.3+ 0.2+ 200506 I52 0.3+ 0.2+
140614 F51 0.0 0.1+ 200430 L01 0.4+ 0.1- 200506 G96 0.1- 0.0
140614 F51 0.1+ 0.0 200430 L01 0.1+ 0.2- 200506 G96 0.3+ 0.1-
140624 F51 0.1- 0.2+ 200430 L01 0.2+ 0.3- 200506 G96 0.1+ 0.3+
140624 F51 0.0 0.0 200430 I52 0.3+ 0.6+ 200506 G96 0.1+ 0.4-
140624 F51 0.1- 0.0 200430 I52 0.2- 0.4+ 200512 I52 0.1+ 0.1+
140624 F51 0.1- 0.2+ 200430 I52 0.3- 0.2+ 200512 I52 0.0 0.4+
140702 F51 0.0 0.2- 200430 I52 0.2- 0.1+ 200512 I52 0.0 0.1+
140702 F51 0.2- 0.1- 200430 858 0.1+ 0.0 200512 I52 0.0 0.1-
140710 F51 0.1- 0.2+ 200430 858 0.2+ 0.0 200515 G96 0.3+ 0.3-
140710 F51 0.1- 0.1+ 200430 858 0.1+ 0.1+ 200515 G96 0.4+ 0.2-
140710 F51 0.2- 0.2+ 200501 204 0.0 0.5+ 200515 G96 0.3+ 0.0
140710 F51 0.1- 0.1+ 200501 204 0.2+ 0.3+ 200515 G96 0.1+ 0.1-
140729 F51 0.0 0.1- 200501 204 0.7+ 0.4+ 200516 I52 0.5+ 0.1+
140729 F51 0.1+ 0.1- 200501 G96 1.4- 0.4- 200516 I52 0.0 0.9-
140729 F51 0.2+ 0.1- 200501 G96 0.0 0.1+ 200516 I52 0.4+ 1.0+
200428 703 0.1+ 0.5+ 200501 G96 1.0- 0.3- 200518 I52 0.2- 0.3+
200428 703 0.3- 0.4- 200501 H21 0.1- 0.2+ 200518 I52 0.2- 0.7-
200428 703 0.3- 0.2+ 200501 H21 0.0 0.2+ 200518 I52 0.3- 0.1-
200428 703 1.1+ 1.3+ 200501 H21 0.0 0.2+ 200523 I52 0.4+ 0.2+
200428 I52 0.1- 0.2+ 200501 H36 0.0 0.2- 200523 I52 0.2+ 0.3+
200428 I52 0.1+ 0.2+ 200501 H36 0.1+ 0.3- 200523 I52 0.2+ 0.0
200428 I52 0.1- 0.2+ 200501 H36 0.4+ 0.0 200523 I52 0.3+ 0.1-
200428 F65 0.4+ 0.1+ 200504 H21 0.2+ 0.0 200609 V06 0.1- 0.4-
200428 F65 0.1+ 0.2+ 200504 I52 0.1+ 0.1- 200609 V06 0.8- 0.3-
200428 F65 0.0 0.5+ 200504 I52 0.1- 0.3+ 200609 V06 0.2+ 0.4-
Ephemeris:
2020 HW9 a,e,i = 1.95, 0.83, 22 q = 0.3296
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 07 22 14 15 00.8 +12 11 52 1.9677 2.1802 87.8 27.8 23.5
...
2020 08 06 14 29 13.8 +08 24 34 2.2764 2.3111 79.1 25.5 23.9
...
2020 08 14 14 37 24.2 +06 36 38 2.4393 2.3771 74.4 24.2 24.0
...
2020 08 20 14 43 45.9 +05 20 57 2.5599 2.4250 70.9 23.2 24.2
2020 08 21 14 44 50.6 +05 08 45 2.5798 2.4328 70.3 23.0 24.2
2020 08 22 14 45 55.5 +04 56 40 2.5996 2.4406 69.7 22.9 24.2
...
2020 08 28 14 52 31.2 +03 46 32 2.7176 2.4867 66.1 21.8 24.3
...
2020 09 05 15 01 32.6 +02 19 08 2.8708 2.5460 61.3 20.3 24.4
...
2020 09 20 15 19 04.7 -00 07 26 3.1431 2.6514 52.3 17.4 24.6
A. U. Tomatic (C) Copyright 2020 MPC M.P.E.C. 2020-Q148
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