[Iaude] MPEC Y15: 2021 YA [a=1.71,e=0.50,i=1.6,H=24.1]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Fri Dec 17 10:55:51 EST 2021


M.P.E.C. 2021-Y15                             Issued 2021 December 17, 15:54 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 YA                                     


Observations:
     K21Y00A* C2021 12 16.21935206 51 03.59 +59 26 22.2          18.41GVEY015703
     K21Y00A  C2021 12 16.22424906 51 02.23 +59 24 54.5          18.29GVEY015703
     K21Y00A  C2021 12 16.22915206 51 00.87 +59 23 26.0          18.51GVEY015703
     K21Y00A  C2021 12 16.23405606 50 59.41 +59 21 57.7          18.69GVEY015703
     K21Y00A mC2021 12 16.25231706 50 54.18 +59 16 30.3          17.80GVEY015703
     K21Y00A mC2021 12 16.25267006 50 54.13 +59 16 22.8          18.31GVEY015703
     K21Y00A mC2021 12 16.25302406 50 54.03 +59 16 16.1          18.51GVEY015703
     K21Y00A mC2021 12 16.25337806 50 53.95 +59 16 10.2          18.42GVEY015703
     K21Y00A mC2021 12 16.35278006 50 23.51 +58 46 17.9          18.18GVEY015703
     K21Y00A mC2021 12 16.35331806 50 23.34 +58 46 07.8          18.73GVEY015703
     K21Y00A mC2021 12 16.35385706 50 23.13 +58 45 58.5          18.67GVEY015703
     K21Y00A mC2021 12 16.35439606 50 22.98 +58 45 48.6          18.50GVEY015703
     K21Y00A KC2021 12 16.40193 06 50 07.97 +58 31 27.5          18.4 GVEY015V21
     K21Y00A KC2021 12 16.40557 06 50 06.91 +58 30 21.6          18.4 GVEY015V21
     K21Y00A KC2021 12 16.40925 06 50 05.80 +58 29 14.7          18.4 GVEY015V21
     K21Y00A KC2021 12 16.41292 06 50 04.70 +58 28 07.5          18.5 GVEY015V21
     K21Y00A  C2021 12 16.50970506 49 54.67 +58 00 32.1          18.37oVEY015T05
     K21Y00A  C2021 12 16.51290406 49 53.74 +57 59 33.9          18.37oVEY015T05
     K21Y00A KC2021 12 16.53251 06 49 35.16 +57 51 54.4          19.1 GVEY015V21
     K21Y00A KC2021 12 16.53606 06 49 34.44 +57 50 50.4          19.2 GVEY015V21
     K21Y00A KC2021 12 16.53966 06 49 33.76 +57 49 45.3          18.9 GVEY015V21
     K21Y00A KC2021 12 16.54326 06 49 33.03 +57 48 40.3          18.7 GVEY015V21
     K21Y00A KC2021 12 16.54687 06 49 32.36 +57 47 35.4          18.6 GVEY015V21
     K21Y00A  C2021 12 16.54755306 49 43.59 +57 49 26.2          18.70oVEY015T05
     K21Y00A  C2021 12 16.57529506 49 35.89 +57 41 18.0          18.60oVEY015T05
     K21Y00A KC2021 12 16.77965 06 49 40.83 +56 41 48.0          17.4 GXEY015J57
     K21Y00A KC2021 12 16.79036 06 49 39.48 +56 39 04.7          18.9 GXEY015J57
     K21Y00A KC2021 12 16.80081 06 49 38.22 +56 36 26.0          18.8 GXEY015J57
     K21Y00A KC2021 12 16.80673006 49 35.36 +56 35 08.6                VEY015203
     K21Y00A KC2021 12 16.82003106 49 33.33 +56 31 45.9          18.2 GVEY015203
     K21Y00A KC2021 12 16.82933 06 49 31.69 +56 29 23.6                VEY015204
     K21Y00A KC2021 12 16.83425906 49 30.87 +56 28 09.7          18.5 GVEY015203
     K21Y00A KC2021 12 16.84078 06 49 29.74 +56 26 29.7                VEY015204
     K21Y00A KC2021 12 16.85234 06 49 27.67 +56 23 34.3          18.6 GVEY015204
     K21Y00A pC2021 12 16.85410906 49 26.63 +56 23 16.0          18.5 GVEY015595
     K21Y00A KC2021 12 16.85714006 49 25.97 +56 22 29.5          18.1 GVEY015595
     K21Y00A KC2021 12 16.86077606 49 25.28 +56 21 33.9          18.4 GVEY015595
     K21Y00A KC2021 12 16.87019106 49 25.35 +56 19 03.4          18.6 GZEY015C95
     K21Y00A KC2021 12 16.87627306 49 25.35 +56 17 20.4          18.8 GXEY015958
     K21Y00A KC2021 12 16.88130906 49 24.40 +56 16 05.0          18.9 GXEY015958
     K21Y00A KC2021 12 16.88634306 49 23.53 +56 14 49.3          19.2 GXEY015958
     K21Y00A KC2021 12 16.88949906 49 20.16 +56 13 38.8          18.7 GVEY015Z99
     K21Y00A KC2021 12 16.89289906 49 19.60 +56 12 47.3          19.0 GVEY015Z99
     K21Y00A KC2021 12 16.89633106 49 18.98 +56 11 55.7          19.0 GVEY015Z99
     K21Y00A KC2021 12 16.89800306 49 20.02 +56 12 04.3          17.6 GZEY015C95
     K21Y00A KC2021 12 16.89973406 49 18.40 +56 11 04.4          18.8 GVEY015Z99
     K21Y00A KC2021 12 16.92575806 49 14.40 +56 05 07.6          18.7 GZEY015C95
     K21Y00A KC2021 12 17.28055806 48 25.34 +54 38 08.8                uEY015H21
     K21Y00A KC2021 12 17.28335606 48 24.74 +54 37 29.4          18.6 VuEY015H21
     K21Y00A KC2021 12 17.28615106 48 24.14 +54 36 49.8          18.7 VuEY015H21
     K21Y00A KC2021 12 17.28894606 48 23.55 +54 36 10.3          18.8 VuEY015H21
     K21Y00A KC2021 12 17.29103806 48 31.34 +54 34 50.7          18.5 GXEY015U55
     K21Y00A KC2021 12 17.29961806 48 29.81 +54 32 52.5          18.6 GXEY015U55

Observer details:
203 GiaGa Observatory.  Observers S. Foglia, G. Galli.  Measurer G. Galli.
    0.36-m f/5.76 Schmidt-Cassegrain + CCD.
204 Schiaparelli Observatory.  Observer L. Buzzi.  0.84-m f/3.5 reflector +
    CCD.
595 Farra d'Isonzo.  Observer E. Pettarin.  0.40-m f/5.15 reflector + CCD.
703 Catalina Sky Survey.  Observer K. W. Wierzchos.  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, D. Rankin, R. L.
    Seaman, F. C. Shelly, K. W. Wierzchos.  0.68-m Schmidt + 10K CCD.
958 Observatoire de Dax.  Observers P. Dupouy, J. B. de Vanssay.  Measurer P.
    Dupouy.  0.43-m f/2.7 reflector + CCD.
C95 SATINO Remote Observatory, Haute Provence.  Observer J. Jahn.  0.60-m
    f/3.2 Newtonian reflector + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers T. Linder, R. Holmes, L. Horn.  0.76-m f/3.0 astrograph + CCD.
J57 Centro Astronomico Alto Turia, Valencia.  Observer A. Fornas.  Measurers
    A. Fornas, G. Fornas, E. Arce, V. Mas.  0.43-m f/6.8 reflector + CCD.
T05 ATLAS-HKO, Haleakala.  Observers L. Denneau, R. Siverd, J. Tonry, H.
    Weiland.  Measurers L. Denneau, N. Erasmus, A. Fitzsimmons, A. Lawrence,
    J. Robinson, R. Siverd, J. Tonry, H. Weiland.  0.5-m reflector + CCD.
U55 Golden Ears Observatory, Maple Ridge.  Observer B. Kumar.  0.25-m f/5.5
    Ritchey-Chretien + CCD.
V21 Cewanee Observatory at DSNM.  Observer D. T. Durig.  0.4-m f/8 Ritchey-
    Chretien + 4656x3520 CCD.
Z99 Clixby Observatory, Cleethorpes.  Observer A. Mickleburgh.  0.36-m f/8
    Schmidt-Cassegrain + CCD.

Orbital elements:
2021 YA                                                  Earth MOID = 0.0213 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
M  34.85606              (2000.0)            P               Q                  
n   0.44083866     Peri.  359.19878     +0.90020669     -0.43529093             
a   1.7098169      Node    26.61566     +0.39968114     +0.81475643             
e   0.5016219      Incl.    1.56509     +0.17286671     +0.38300621             
P   2.24           H   24.17          G   0.15           U   7                  
Residuals in seconds of arc
211216 703  0.6-  0.1-    211216 V21  0.5+  0.3-    211216 595  0.5-  0.5-
211216 703  0.6-  0.3+    211216 V21  0.3+  0.1-    211216 C95  0.3-  0.3-
211216 703  0.4-  0.1+    211216 V21  0.5+  0.1-    211216 958  0.1-  0.1+
211216 703  0.9-  0.1+    211216 V21  0.1+  0.1-    211216 958  0.5-  0.5+
211216 703  0.5-  1.2+    211216 V21  0.1+  0.3+    211216 958  0.1-  0.2+
211216 703  0.1-  0.2+    211216 T05  0.4+  0.2-    211216 Z99  0.3-  0.2-
211216 703  0.0   0.2-    211216 T05  0.1+  0.0     211216 Z99  0.0   0.2-
211216 703  0.1+  0.3+    211216 J57  0.0   0.2-    211216 Z99  0.1-  0.0
211216 703  0.1+  0.2+    211216 J57  0.5-  0.3-    211216 C95  0.2-  0.4-
211216 703  0.1+  0.1-    211216 J57  0.3+  0.0     211216 Z99  0.1+  0.2+
211216 703  0.3-  0.2+    211216 203  0.1-  0.0     211216 C95  0.2+  0.6+
211216 703  0.1-  0.1+    211216 203  0.5+  0.1-    211217 H21  0.1+  0.1+
211216 V21  0.7+  0.1+    211216 204  0.2+  0.2+    211217 H21  0.0   0.2+
211216 V21  0.7+  0.3+    211216 203  0.2-  0.0     211217 H21  0.1-  0.0
211216 V21  0.4+  0.3+    211216 204  0.2+  0.1+    211217 H21  0.1-  0.0
211216 V21  0.1+  0.2-    211216 204  0.0   0.0     211217 U55  0.1-  0.5-
211216 T05  0.1+  1.0+    211216 595  0.3+  0.3+    211217 U55  0.1+  0.7-
211216 T05  0.4+  1.1-    211216 595  0.5-  0.2-

Ephemeris:
2021 YA                  a,e,i = 1.71, 0.50, 2                   q = 0.8521
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 17    18 29 39.9 -20 30 58   0.1686  0.8719    42.5   130.0    25.7
...
2021 12 02    18 37 29.1 -08 19 00   0.06528 0.9320    33.0   144.8    25.6
...
2021 12 10    18 30 27.9 +42 18 10   0.02281 0.9765    68.0   110.8    20.1
...
2021 12 16    06 51 25.2 +60 36 39   0.03853 1.0141   140.3    38.3    18.7
2021 12 17    06 48 55.1 +55 46 03   0.04426 1.0207   145.0    33.5    18.8
2021 12 18    06 47 19.7 +52 02 13   0.05026 1.0273   148.8    29.8    19.0
...
2021 12 24    06 43 06.7 +40 34 29   0.08902 1.0683   161.4    17.1    20.0
...
2022 01 01    06 40 40.6 +34 52 03   0.1452  1.1259   168.1    10.3    20.9
...
2022 01 16    06 40 40.4 +30 26 22   0.2653  1.2385   161.8    14.3    22.6

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-Y15




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