[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




More information about the Iaude mailing list