[Iaude] MPEC Y78: 2021 YR [a=2.01,e=0.60,i=4.0,H=25.7]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Fri Dec 31 08:35:01 EST 2021


M.P.E.C. 2021-Y78                             Issued 2021 December 31, 13:33 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

                                    2021 YR                                     


Observations:
     K21Y00R KC2021 12 30.00562 08 48 06.24 +22 56 52.2          18.8 RoEY078K88
     K21Y00R KC2021 12 30.00621 08 48 05.52 +22 56 57.4          18.8 RoEY078K88
     K21Y00R* C2021 12 30.03795 08 47 27.77 +23 02 15.5          19.1 RoEY078K88
     K21Y00R  C2021 12 30.03855 08 47 27.10 +23 02 21.9          19.1 RoEY078K88
     K21Y00R  C2021 12 30.03916 08 47 26.34 +23 02 28.7          19.1 RoEY078K88
     K21Y00R KC2021 12 30.04826 08 47 15.60 +23 03 57.2          19.1 RoEY078K88
     K21Y00R KC2021 12 30.05120 08 47 12.17 +23 04 25.7          19.2 RoEY078K88
     K21Y00R KC2021 12 30.05370 08 47 09.20 +23 04 50.5          19.2 RoEY078K88
     K21Y00R KC2021 12 30.06943 08 46 50.89 +23 07 22.0          19.1 RoEY078K88
     K21Y00R KC2021 12 30.07091 08 46 49.16 +23 07 36.0          19.2 RoEY078K88
     K21Y00R KC2021 12 30.07385 08 46 45.78 +23 08 03.9          19.0 RoEY078K88
     K21Y00R KC2021 12 30.08823 08 46 29.23 +23 10 19.8          19.3 RoEY078K88
     K21Y00R KC2021 12 30.08970 08 46 27.55 +23 10 33.8          19.2 RoEY078K88
     K21Y00R KC2021 12 30.09118 08 46 25.87 +23 10 47.3          19.1 RoEY078K88
     K21Y00R KC2021 12 30.09265 08 46 24.18 +23 11 01.7          19.1 RoEY078K88
     K21Y00R KC2021 12 30.11692 08 45 56.79 +23 14 45.0          19.3 RoEY078K88
     K21Y00R KC2021 12 30.11853 08 45 54.96 +23 15 00.2          19.4 RoEY078K88
     K21Y00R KC2021 12 30.12014 08 45 53.21 +23 15 14.5          19.3 RoEY078K88
     K21Y00R KC2021 12 30.12176 08 45 51.40 +23 15 29.4          19.2 RoEY078K88
     K21Y00R KC2021 12 30.12337 08 45 49.60 +23 15 44.3          19.2 RoEY078K88
     K21Y00R KC2021 12 30.13710 08 45 34.38 +23 17 47.8          19.3 RoEY078K88
     K21Y00R KC2021 12 30.13871 08 45 32.60 +23 18 02.3          19.1 RoEY078K88
     K21Y00R KC2021 12 30.14033 08 45 30.88 +23 18 16.4          19.1 RoEY078K88
     K21Y00R KC2021 12 30.14194 08 45 29.10 +23 18 31.0          19.2 RoEY078K88
     K21Y00R KC2021 12 30.14355 08 45 27.32 +23 18 45.8          19.2 RoEY078K88
     K21Y00R KC2021 12 30.14644 08 45 24.16 +23 19 10.9          19.2 RoEY078K88
     K21Y00R KC2021 12 30.14806 08 45 22.42 +23 19 25.5          19.1 RoEY078K88
     K21Y00R KC2021 12 30.14967 08 45 20.65 +23 19 39.5          19.3 RoEY078K88
     K21Y00R KC2021 12 30.15128 08 45 18.88 +23 19 53.9          19.1 RoEY078K88
     K21Y00R KC2021 12 30.15289 08 45 17.17 +23 20 08.0          19.1 RoEY078K88
     K21Y00R KC2021 12 30.86269208 35 36.95 +24 48 37.5          18.4 VvEY078L06
     K21Y00R KC2021 12 30.86340308 35 36.42 +24 48 42.1          18.5 VvEY078L06
     K21Y00R KC2021 12 30.86411408 35 35.89 +24 48 46.9          18.5 VvEY078L06
     K21Y00R KC2021 12 30.88024 08 35 25.01 +24 50 26.0                XEY078I93
     K21Y00R KC2021 12 30.88949 08 35 18.15 +24 51 26.6                XEY078I93
     K21Y00R KC2021 12 30.89863 08 35 11.35 +24 52 25.6          18.9 GXEY078I93
     K21Y00R KC2021 12 30.91218208 35 01.62 +24 54 07.1          19.1 GVEY078B49
     K21Y00R KC2021 12 30.91391208 35 00.32 +24 54 18.3          19.0 GVEY078B49
     K21Y00R KC2021 12 30.91395508 34 58.42 +24 54 10.6          18.3 VvEY078L06
     K21Y00R KC2021 12 30.91573208 34 57.07 +24 54 21.5          18.4 VvEY078L06
     K21Y00R KC2021 12 30.91856 08 34 55.05 +24 54 38.8          19.4 GVEY078204
     K21Y00R KC2021 12 30.92314208 34 53.38 +24 55 17.6          19.0 GVEY078B49
     K21Y00R KC2021 12 30.92637 08 34 49.14 +24 55 28.1                VEY078204
     K21Y00R KC2021 12 30.93026008 34 48.06 +24 56 02.2          19.4 GVEY078B49
     K21Y00R KC2021 12 30.93101308 34 45.58 +24 56 06.7          18.8 RqEY078104
     K21Y00R KC2021 12 30.93602708 34 41.77 +24 56 38.3          18.5 RqEY078104
     K21Y00R KC2021 12 30.93609 08 34 41.81 +24 56 29.0                VEY078204
     K21Y00R KC2021 12 30.94104408 34 37.94 +24 57 09.2          18.9 RqEY078104
     K21Y00R IC2021 12 31.01900408 33 38.13 +25 04 50.4          19.2 VSEY078L01
     K21Y00R hC2021 12 31.02055208 33 36.98 +25 04 59.4          19.1 VSEY078L01
     K21Y00R hC2021 12 31.02211108 33 35.80 +25 05 08.8          19.1 VSEY078L01
     K21Y00R hC2021 12 31.02366908 33 34.58 +25 05 17.6          19.3 VSEY078L01
     K21Y00R hC2021 12 31.02522708 33 33.43 +25 05 26.8          19.4 VSEY078L01
     K21Y00R KC2021 12 31.06913208 33 04.23 +25 09 38.7                XEY078958
     K21Y00R KC2021 12 31.07430108 33 00.41 +25 10 06.2          19.4 GXEY078958
     K21Y00R KC2021 12 31.07948508 32 56.56 +25 10 34.7          19.3 GXEY078958

Observer details:
104 San Marcello Pistoiese.  Observers P. Bacci, M. Maestripieri.  Measurers
    P. Bacci, L. Tesi, G. Fagioli.  0.60-m reflector + CCD.
204 Schiaparelli Observatory.  Observer L. Buzzi.  0.84-m f/3.5 reflector +
    CCD.
958 Observatoire de Dax.  Observer P. Dupouy.  0.32-m Schmidt-Cassegrain +
    CCD.
B49 Paus Observatory, Sabadell.  Observer J. Camarasa.  0.30-m f/4.0 reflector
    + CCD.
I93 St Pardon de Conques.  Observer F. Losse.  0.40-m f/3.7 reflector + CCD.
K88 GINOP-KHK, Piszkesteto.  Observer K. Sarneczky.  0.60-m Schmidt + CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.
L06 Sormano 2 Observatory, Bellagio Via Lattea.  Observer G. Ventre.  Measurer
    P. Sicoli.  0.36-m Schmidt-Cassegrain + CCD.

Orbital elements:
2021 YR                                                  Earth MOID = 0.0017 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
M  22.06193              (2000.0)            P               Q                  
n   0.34470623     Peri.  299.90090     +0.79590777     -0.60141082             
a   2.0145125      Node    97.15739     +0.57682369     +0.71841422             
e   0.5996441      Incl.    4.01895     +0.18386206     +0.34955118             
P   2.86           H   25.79          G   0.15           U   8                  
Residuals in seconds of arc
211230 K88  0.5-  0.6+    211230 K88  0.2+  0.2+    211230 L06  0.1-  0.6+
211230 K88  0.7-  0.2-    211230 K88  0.2-  0.0     211230 L06  0.3-  0.2+
211230 K88  0.2+  0.5-    211230 K88  0.3-  0.1+    211230 204  0.1+  0.0
211230 K88  0.8+  0.0     211230 K88  0.5+  0.3-    211230 B49  0.2-  0.4+
211230 K88  0.2+  0.8+    211230 K88  0.3+  0.0     211230 204  0.1-  0.1-
211230 K88  0.1-  0.1-    211230 K88  0.0   0.4+    211230 B49  0.3+  0.2-
211230 K88  0.2+  0.2-    211230 K88  0.0   0.2-    211230 104  0.2-  0.3+
211230 K88  0.4-  0.2+    211230 K88  0.3+  0.1+    211230 104  0.2-  0.5+
211230 K88  0.2-  0.1+    211230 K88  0.0   0.1-    211230 204  0.2+  0.1-
211230 K88  0.4-  0.0     211230 K88  0.2-  0.0     211230 104  0.5-  0.2+
211230 K88  0.1-  0.2-    211230 K88  0.3+  0.1-    211231 L01  0.3+  0.7-
211230 K88  0.2-  0.3-    211230 L06  0.2-  0.1-    211231 L01  0.4+  0.5-
211230 K88  0.1-  0.1-    211230 L06  0.2-  0.2-    211231 L01  0.3+  0.1-
211230 K88  0.1-  0.4-    211230 L06  0.2-  0.1-    211231 L01  0.3-  0.2-
211230 K88  0.3-  0.3+    211230 I93  0.4+  0.6+    211231 L01  0.1-  0.2+
211230 K88  0.1+  0.5-    211230 I93  0.1+  0.6+    211231 958  0.2-  0.2+
211230 K88  0.3-  0.0     211230 I93  0.3-  0.2+    211231 958  0.3-  0.9-
211230 K88  0.5+  0.4-    211230 B49  0.0   0.1+    211231 958  0.7-  0.9-
211230 K88  0.4+  0.2-    211230 B49  0.0   0.1+

Ephemeris:
2021 YR                  a,e,i = 2.01, 0.60, 4                   q = 0.8065
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 12 01    19 24 14.1 -31 22 38   0.2217  0.8296    40.3   129.7    27.8
...
2021 12 16    19 24 51.3 -32 51 58   0.09033 0.9040    26.2   151.2    29.0
...
2021 12 24    18 30 19.1 -37 11 23   0.02503 0.9594    14.5   165.1    30.9
...
2021 12 30    08 48 09.9 +22 58 11   0.02589 1.0058   149.6    29.7    19.2
2021 12 31    08 33 49.4 +25 04 29   0.03379 1.0139   154.0    25.1    19.6
2022 01 01    08 24 37.1 +26 20 04   0.04181 1.0220   157.1    22.0    20.0
...
2022 01 07    08 02 25.0 +28 58 29   0.09107 1.0722   166.7    12.2    21.5
...
2022 01 15    07 53 18.2 +29 40 20   0.1599  1.1419   171.4     7.4    22.6
...
2022 01 30    07 48 36.2 +29 26 34   0.3034  1.2771   162.0    13.8    24.5

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-Y78




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