[Iaude] MPEC Y85: 2020 YL2 [a=1.84,e=0.57,i=2.9,H=25.0]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Tue Dec 22 03:24:32 EST 2020


M.P.E.C. 2020-Y85                             Issued 2020 December 22, 08:23 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 YL2                                    


Observations:
     K20Y02L  C2020 12 19.38708 09 15 01.62 -25 09 40.0                VEY085703
     K20Y02L  C2020 12 19.39243 09 13 56.37 -24 55 45.7                VEY085703
     K20Y02L  C2020 12 19.39778 09 12 52.01 -24 41 54.6          17.0 GVEY085703
     K20Y02L* C2020 12 21.50969807 22 21.92 +05 49 27.6          17.81cVEY085T08
     K20Y02L  C2020 12 21.54887007 21 45.05 +05 58 26.6          17.85cVEY085T08
     K20Y02L  C2020 12 21.57714807 21 19.37 +06 04 44.7          18.24cVEY085T08
     K20Y02L 4C2020 12 21.86116307 18 34.48 +07 00 05.2          18.0 GVEY085Z84
     K20Y02L 4C2020 12 21.86232707 18 33.71 +07 00 18.8          18.1 GVEY085Z84
     K20Y02L 4C2020 12 21.86490907 18 31.96 +07 00 47.7          17.7 GVEY085Z84
     K20Y02L 4C2020 12 21.86619907 18 31.09 +07 01 01.2          18.5 GVEY085Z84
     K20Y02L 4C2020 12 21.86749007 18 30.17 +07 01 16.5          17.6 GVEY085Z84
     K20Y02L KC2020 12 22.18766907 15 19.88 +07 54 40.3          18.1 GVEY085W33
     K20Y02L |C2020 12 22.19575 07 15 11.92 +08 01 41.9          18.3 VuEY085807
     K20Y02L  C2020 12 22.19602307 15 21.60 +07 55 56.1          18.39GVEY085I52
     K20Y02L KC2020 12 22.19773707 15 13.70 +07 56 11.2          18.2 GVEY085W33
     K20Y02L |C2020 12 22.19802 07 15 10.50 +08 02 02.3          18.1 VuEY085807
     K20Y02L |C2020 12 22.20030 07 15 09.05 +08 02 22.3          17.9 VuEY085807
     K20Y02L  C2020 12 22.20168107 15 18.33 +07 56 47.6          17.69GVEY085I52
     K20Y02L  C2020 12 22.20734007 15 15.04 +07 57 39.0          17.67GVEY085I52
     K20Y02L KC2020 12 22.20771807 15 07.56 +07 57 41.2          17.7 GVEY085W33
     K20Y02L  C2020 12 22.21300107 15 11.74 +07 58 30.0          18.38GVEY085I52
     K20Y02L KC2020 12 22.24898107 14 43.75 +08 03 22.9          18.0 VuEY085H21
     K20Y02L KC2020 12 22.25092007 14 42.60 +08 03 39.8          18.1 VuEY085H21
     K20Y02L KC2020 12 22.25508507 14 40.11 +08 04 16.2          18.0 VuEY085H21

Observer details:
703 Catalina Sky Survey.  Observer H. Groeller.  Measurers D. Rankin, B. Gray,
    F. C. Shelly.  1.5-m reflector + 10K CCD.
807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes.
    0.61-m f/6.5 astrograph + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.76-m f/3.0
    astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer G. J. Leonard.
    Measurers E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D.
    Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A.
    Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.0-m
    reflector + CCD.
T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, J. Tonry, A. Heinze, H.
    Weiland.  Measurers L. Denneau, J. Tonry, A. Heinze, H. Weiland, H.
    Flewelling, A. Fitzsimmons, J. Robinson, N. Erasmus.  0.5-m reflector +
    CCD.
W33 Transit Dreams Observatory, Campobello.  Observer D. Wilde.  0.36-m
    Schmidt-Cassegrain + CCD.
Z84 Calar Alto-Schmidt.  Observer E. Petrescu.  Measurers E. Petrescu, D.
    Koschny, L. Conversi, M. Micheli, E. Schwab.  0.8-m f/3 Schmidt + CCD.

Orbital elements:
2020 YL2                                                 Earth MOID = 0.0036 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Bell                    
M  15.66672              (2000.0)            P               Q                  
n   0.39470640     Peri.  120.94625     +0.90953316     -0.41248713             
a   1.8405739      Node   263.45733     +0.36166425     +0.84594734             
e   0.5722559      Incl.    2.94412     +0.20481309     +0.33797554             
P   2.50           H   25.04          G   0.15           U   7                  
Residuals in seconds of arc
201219 703  0.9+  0.4-    201221 Z84  0.1+  0.1+    201222 807  0.3-  0.1-
201219 703  0.9-  0.4+    201221 Z84  0.1+  0.8-    201222 I52  0.1+  0.1-
201219 703 (0.5-  2.5+)   201221 Z84  0.1+  0.8-    201222 I52  0.1+  0.0-
201221 T08  0.2-  0.4+    201221 Z84  0.6-  0.1+    201222 W33  0.1-  0.2+
201221 T08  0.4+  0.1+    201221 Z84  0.6-  0.1+    201222 I52  0.2+  0.1-
201221 T08  0.1+  0.2-    201222 W33  0.0-  0.3+    201222 H21  0.2-  0.0+
201221 Z84  0.0+  0.4-    201222 807  0.1-  0.1-    201222 H21  0.0+  0.1+
201221 Z84  0.2+  0.1+    201222 I52  0.0-  0.1-    201222 H21  0.2+  0.3+
201221 Z84  0.2+  0.1+    201222 W33  0.1+  0.0+
201221 Z84  0.1+  0.1+    201222 807  0.0-  0.1+

Ephemeris:
2020 YL2                 a,e,i = 1.84, 0.57, 3                   q = 0.7873
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 22    18 31 16.8 -17 31 43   0.2341  0.8160    38.0   131.8    27.3
...
2020 12 07    18 37 05.6 -18 04 20   0.09944 0.8955    24.3   153.1    28.8
...
2020 12 15    18 21 09.4 -22 15 38   0.03284 0.9521    11.8   167.8    32.5
...
2020 12 21    07 30 45.0 +03 24 37   0.01758 0.9990   149.7    29.7    17.6
2020 12 22    07 16 53.0 +07 27 33   0.02557 1.0071   155.8    23.6    18.2
2020 12 23    07 09 31.4 +09 34 17   0.03367 1.0152   159.4    19.9    18.7
...
2020 12 29    06 55 18.4 +13 33 44   0.08333 1.0652   168.9    10.2    20.4
...
2021 01 06    06 50 38.7 +14 57 42   0.1523  1.1341   171.4     7.4    21.8
...
2021 01 21    06 50 02.5 +16 11 04   0.2958  1.2661   160.1    15.3    23.8

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-Y85




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