[Iaude] MPEC E34: 2020 SW2 [a=1.72,e=0.37,i=19.0,H=20.71]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Wed Mar 2 09:06:52 EST 2022
M.P.E.C. 2022-E34 Issued 2022 March 2, 14:05 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 SW2
Revision to MPEC 2020-S136
Additional Observations:
K20S02W OC2008 01 08.39054808 33 07.76 +47 36 36.2 VEE034568
K20S02W OC2008 01 08.42347608 33 03.86 +47 36 47.3 VEE034568
K20S02W -C2013 03 09.30955212 05 02.64 -00 21 28.8 VEE034309
K20S02W -C2013 03 09.31919912 05 01.54 -00 21 32.8 VEE034309
K20S02W -C2013 03 09.32390512 05 01.01 -00 21 34.7 VEE034309
K20S02W -C2013 03 09.32857512 05 00.45 -00 21 36.8 VEE034309
K20S02W -C2013 04 04.10077111 08 26.95 -03 33 52.6 VEE034309
K20S02W -C2013 04 04.10181511 08 26.81 -03 33 53.3 VEE034309
K20S02W |C2022 02 28.16813 11 28 33.42 +11 46 58.1 22.0 GVEE034807
K20S02W |C2022 02 28.18298 11 28 31.79 +11 46 58.3 22.1 GVEE034807
K20S02W |C2022 02 28.19777 11 28 30.16 +11 46 57.5 22.1 GVEE034807
K20S02W |C2022 03 01.13637 11 26 48.57 +11 46 15.5 22.0 GVEE034807
K20S02W |C2022 03 01.14470 11 26 47.64 +11 46 15.1 22.1 GVEE034807
K20S02W |C2022 03 01.15303 11 26 46.69 +11 46 14.9 22.4 GVEE034807
Observer details:
309 Cerro Paranal. Observer . Measurer S. Deen. 2.65-m Ritchey-Chretien +
CCD.
568 Mauna Kea. Observer . Measurer S. Deen. 8.3-m Subaru Telescope + CCD.
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes, L.
Horn. 1.00-m f/10.0 astrograph + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
080108 568 0.08+ 0.04+ 220301 807 0.02+ 0.02+ E2020-V52 +0.03 days
Orbital elements:
2020 SW2 Earth MOID = 0.2128 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5 Veres
M 257.99666 (2000.0) P Q
n 0.43510337 Peri. 294.19318 +0.32314486 +0.94580998
a 1.7248093 Node 354.36517 -0.70637232 +0.21859538
e 0.3698744 Incl. 18.99034 -0.62977420 +0.24012401
P 2.27 H 20.71 G 0.15 U 0
Residuals in seconds of arc
080108 568 (0.4+ 0.2-) 200921 H01 0.0 0.0 201022 F52 0.1- 0.1+
080108 568 0.0 0.1- 200921 H01 0.0 0.1+ 201022 F52 0.1- 0.1+
130309 309 0.2+ 0.2+ 200921 H01 0.0 0.1- 201023 F51 0.1- 0.1+
130309 309 0.1+ 0.2+ 200921 H01 0.0 0.1- 201023 F51 0.2- 0.2+
130309 309 0.2+ 0.2+ 200925 V06 0.1- 0.0 201023 F51 0.1- 0.2-
130309 309 0.3- 0.0 200925 V06 0.1+ 0.0 201025 F51 0.1+ 0.3+
130404 309 0.0 0.0 200925 V06 0.1- 0.1- 201025 F51 0.1+ 0.1+
130404 309 0.1+ 0.2- 201007 V06 0.3+ 0.1+ 201025 F51 0.0 0.0
200918 F51 0.2- 0.0 201007 V06 0.2+ 0.1- 201104 H21 0.3+ 0.5-
200918 F51 0.0 0.0 201007 V06 0.1+ 0.0 201104 H21 0.7+ 0.2-
200918 F51 0.1+ 0.1- 201007 V06 0.2+ 0.2- 201104 H21 0.4+ 0.0
200919 L01 0.0 0.0 201017 V06 0.1- 0.1- 201108 H21 1.9- 0.2-
200919 L01 0.3- 0.1+ 201017 V06 0.2- 0.0 201108 H21 1.2- 0.6-
200919 L01 0.4- 0.1+ 201017 V06 0.2- 0.3+ 201108 H21 0.5- 0.8-
200919 L01 0.3- 0.4+ 201018 V06 0.1- 0.0 220228 807 0.1- 0.4-
200921 H21 0.1- 0.2+ 201018 V06 0.2+ 0.4+ 220228 807 0.1+ 0.3+
200921 H21 0.4- 0.2+ 201018 V06 0.2+ 0.2+ 220228 807 0.2+ 0.1+
200921 H21 0.2- 0.2+ 201022 G96 0.1+ 0.1- 220301 807 0.1- 0.1-
200921 I52 0.3+ 0.5+ 201022 G96 0.2+ 0.2- 220301 807 0.0 0.2-
200921 I52 0.3- 0.1- 201022 G96 0.9+ 0.6- 220301 807 0.2- 0.0
200921 I52 0.3- 0.1+ 201022 G96 0.1+ 0.1+
200921 I52 0.3+ 0.7+ 201022 F52 0.1- 0.1+
Ephemeris:
2020 SW2 a,e,i = 1.72, 0.37, 19 q = 1.0868
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2022 01 31 12 00 17.7 +11 57 51 1.1935 2.0105 134.5 20.5 23.6
...
2022 02 15 11 48 15.1 +11 50 25 1.0256 1.9526 151.8 13.8 23.0
...
2022 02 23 11 37 14.7 +11 49 12 0.9551 1.9201 161.9 9.2 22.6
...
2022 03 01 11 27 03.2 +11 46 16 0.9126 1.8949 169.2 5.6 22.4
2022 03 02 11 25 13.0 +11 45 26 0.9064 1.8906 170.3 5.1 22.3
2022 03 03 11 23 20.7 +11 44 28 0.9005 1.8864 171.3 4.5 22.3
...
2022 03 09 11 11 31.2 +11 35 24 0.8711 1.8603 173.0 3.7 22.1
...
2022 03 17 10 54 55.7 +11 12 15 0.8473 1.8247 164.2 8.6 22.2
...
2022 04 01 10 26 05.7 +09 48 36 0.8471 1.7551 143.7 19.7 22.6
A. U. Tomatic (C) Copyright 2022 MPC M.P.E.C. 2022-E34
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