[Iaude] MPEC J150: 2021 GW9 [a=1.69,e=0.24,i=2.0,H=21.8]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Mon May 10 14:42:04 EDT 2021
M.P.E.C. 2021-J150 Issued 2021 May 10, 18:40 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
2021 GW9
Revision to MPEC 2021-G200
Additional Observations:
K21G09W C1999 03 20.30417012 06 46.345+00 48 19.15 20.63VeEJ150645
K21G09W C1999 03 20.30764212 06 46.165+00 48 21.16 21.35 eEJ150645
K21G09W C1999 03 22.29779012 05 22.061+01 07 16.28 20.72VeEJ150645
K21G09W C1999 03 22.30126212 05 21.882+01 07 18.19 21.34 eEJ150645
K21G09W C2010 04 10.30373 13 14 15.82 -04 20 27.2 20.9 VrEJ150G96
K21G09W C2010 04 10.31264 13 14 15.21 -04 20 22.3 20.9 VrEJ150G96
K21G09W C2010 04 10.32156 13 14 14.64 -04 20 17.4 20.5 VrEJ150G96
K21G09W C2010 04 10.33044 13 14 13.99 -04 20 13.2 20.9 VrEJ150G96
Observer details:
645 Apache Point-Sloan Digital Sky Survey. Observer SDSS Collaboration.
Measurers Z. Ivezic, M. Juric, R. H. Lupton, S. Tabachnik, T. Quinn.
2.50-m reflector + CCD.
G96 Mt. Lemmon Survey. Observers R. A. Kowalski, G. M. Hupe. Measurers J. D.
Ahern, E. C. Beshore, A. Boattini, G. J. Garradd, A. R. Gibbs, A. D.
Grauer, R. E. Hill, R. A. Kowalski, S. M. Larson, R. H. McNaught. 1.5-m
reflector + CCD.
Orbital elements:
2021 GW9 Earth MOID = 0.2913 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 357.54891 (2000.0) P Q
n 0.44919236 Peri. 323.31257 -0.66448022 -0.74727396
a 1.6885521 Node 168.32449 +0.69349248 -0.62004717
e 0.2442971 Incl. 1.95511 +0.27844966 -0.23900448
P 2.19 H 21.8 G 0.15 U 3
Residuals in seconds of arc
990320 645 0.0 0.0 210411 807 0.0 0.1- 210414 033 0.8+ 0.5-
990320 645 0.0 0.0 210411 807 0.1+ 0.0 210414 033 0.1+ 0.9-
990322 645 0.1+ 0.0 210411 807 0.1- 0.1+ 210420 V06 0.0 0.1+
990322 645 0.0 0.0 210411 H01 0.0 0.0 210420 V06 0.1- 0.1+
100410 G96 0.2+ 0.2- 210411 H01 0.3- 0.1- 210420 V06 0.4- 0.2+
100410 G96 0.1- 0.0 210411 H01 0.1- 0.1- 210420 V06 0.3- 0.2+
100410 G96 0.2+ 0.3+ 210411 H01 0.0 0.3- 210508 F51 0.1+ 0.0
100410 G96 0.7- 0.1- 210413 H01 0.0 0.1+ 210508 F51 0.2- 0.2-
210410 F51 0.0 0.2+ 210413 H01 0.1- 0.1- 210508 F51 0.1+ 0.1+
210410 F51 0.0 0.0 210413 H01 0.1+ 0.1+
210410 F51 0.1+ 0.1+ 210413 H01 0.0 0.0
Ephemeris:
2021 GW9 a,e,i = 1.69, 0.24, 2 q = 1.2760
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 04 10 14 24 24.9 -10 36 35 0.5024 1.4885 162.4 11.7 21.9
...
2021 04 25 14 06 28.3 -08 31 07 0.5327 1.5375 175.3 3.0 21.7
...
2021 05 03 13 57 52.1 -07 38 22 0.5654 1.5640 166.9 8.4 22.1
...
2021 05 09 13 52 41.3 -07 09 39 0.5973 1.5840 160.0 12.6 22.4
2021 05 10 13 51 57.2 -07 05 53 0.6032 1.5873 158.9 13.3 22.5
2021 05 11 13 51 15.6 -07 02 24 0.6093 1.5907 157.7 13.9 22.5
...
2021 05 17 13 47 58.0 -06 47 52 0.6490 1.6107 151.2 17.6 22.8
...
2021 05 25 13 45 56.5 -06 44 57 0.7102 1.6372 143.1 21.8 23.2
...
2021 06 09 13 48 53.8 -07 22 46 0.8459 1.6863 129.7 27.6 23.8
A. U. Tomatic (C) Copyright 2021 MPC M.P.E.C. 2021-J150
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