[Iaude] MPEC Y91: 2020 YR2 [a=1.38,e=0.33,i=5.2,H=28.5]

Tue Dec 22 03:34:37 EST 2020

M.P.E.C. 2020-Y91                             Issued 2020 December 22, 08:33 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 YR2                                    


Observations:
     K20Y02R* C2020 12 21.34093208 07 51.18 -04 26 27.8          19.22GVEY091G96
     K20Y02R  C2020 12 21.34605908 07 40.31 -04 26 44.4          19.07GVEY091G96
     K20Y02R  C2020 12 21.35629608 07 18.52 -04 27 17.3                VEY091G96
     K20Y02R mC2020 12 21.43446408 04 40.77 -04 30 59.0          19.53GVEY091I52
     K20Y02R mC2020 12 21.43465208 04 40.43 -04 30 59.3          19.07GVEY091I52
     K20Y02R mC2020 12 21.43483908 04 40.08 -04 31 00.0          18.91GVEY091I52
     K20Y02R mC2020 12 21.43502708 04 39.75 -04 31 01.2          18.07GVEY091I52
     K20Y02R |C2020 12 22.22700 07 52 03.96 -04 39 02.5          19.3 VuEY091807
     K20Y02R |C2020 12 22.22928 07 52 01.67 -04 39 05.3          19.8 VuEY091807
     K20Y02R |C2020 12 22.23156 07 51 59.42 -04 39 08.9          19.9 VuEY091807
     K20Y02R KC2020 12 22.28992307 51 16.35 -04 56 44.5          20.0 VuEY091H21
     K20Y02R KC2020 12 22.29128307 51 15.11 -04 56 46.3          20.4 VuEY091H21
     K20Y02R KC2020 12 22.29701207 51 09.80 -04 56 52.8          20.0 VuEY091H21
     K20Y02R mC2020 12 22.34292707 50 46.44 -04 56 20.7          20.28GVEY091I52
     K20Y02R mC2020 12 22.34334707 50 46.05 -04 56 20.0          19.68GVEY091I52
     K20Y02R mC2020 12 22.34376807 50 45.66 -04 56 20.8          19.92GVEY091I52
     K20Y02R mC2020 12 22.34419007 50 45.30 -04 56 21.4                VEY091I52

Observer details:
807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes.
    0.61-m f/6.5 astrograph + CCD.
G96 Mt. Lemmon Survey.  Observer D. Rankin.  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.  1.5-m reflector + 10K 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.

Orbital elements:
2020 YR2                                                 Earth MOID = 0.0001 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Bell                    
M  17.01193              (2000.0)            P               Q                  
n   0.60481596     Peri.  142.18359     +0.63295337     -0.76879368             
a   1.3848005      Node   268.35842     +0.68618287     +0.61166983             
e   0.3261760      Incl.    5.23760     +0.35850119     +0.18659128             
P   1.63           H   28.52          G   0.15           U   6                  
Residuals in seconds of arc
201221 G96  0.4-  0.1+    201221 I52 (0.7+  0.9-)   201222 H21  0.4-  0.2-
201221 G96  0.3+  0.1+    201222 807 (0.1+  0.9-)   201222 I52  0.1+  0.7-
201221 G96 (1.5-  0.3-)   201222 807  0.2-  0.0-    201222 I52  0.1+  0.5+
201221 I52  0.1-  0.2-    201222 807  0.1+  0.1+    201222 I52  0.0-  0.1+
201221 I52  0.1+  0.0-    201222 H21  0.4-  0.3+    201222 I52  0.3+  0.0-
201221 I52  0.2+  0.2-    201222 H21  0.1-  0.0-

Ephemeris:
2020 YR2                 a,e,i = 1.38, 0.33, 5                   q = 0.9331
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 22    19 31 22.1 +03 05 07   0.1141  0.9338    58.9   115.1    28.2
...
2020 12 07    19 37 27.1 +04 44 17   0.05236 0.9510    48.2   129.5    27.7
...
2020 12 15    19 30 29.4 +05 25 41   0.01971 0.9695    41.0   138.2    26.5
...
2020 12 21    08 19 19.8 -03 46 40   0.0050030.9873   135.9    43.9    18.7
2020 12 22    07 54 39.6 -04 39 38   0.0090270.9907   140.6    39.1    19.8
2020 12 23    07 45 11.8 -04 58 13   0.01308 0.9940   142.7    36.9    20.6
...
2020 12 29    07 31 05.5 -05 11 12   0.03759 1.0155   148.2    30.7    22.7
...
2021 01 06    07 26 34.2 -04 37 23   0.07104 1.0468   152.5    25.7    24.1
...
2021 01 21    07 23 49.0 -02 27 53   0.1395  1.1116   154.6    22.3    25.5

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-Y91