[Iaude] MPEC Y63: 2017 YK5 [a=2.53,e=0.64,i=0.9,H=24.0]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Tue Dec 28 14:38:46 EST 2021


M.P.E.C. 2021-Y63                             Issued 2021 December 28, 19:37 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

                                    2017 YK5                                    


                           Revision to MPEC 2017-Y126                           

Additional Observations:
     K17Y05K  C2021 12 27.18064102 34 08.45 +29 07 04.4          18.81GVEY063703
     K17Y05K  C2021 12 27.18634702 34 20.05 +29 07 50.5          19.10GVEY063703
     K17Y05K  C2021 12 27.19204902 34 31.59 +29 08 36.1          18.81GVEY063703
     K17Y05K  C2021 12 27.19775502 34 43.18 +29 09 21.6          18.87GVEY063703
     K17Y05K mC2021 12 27.21412202 35 16.46 +29 11 31.1          18.81GVEY063I52
     K17Y05K mC2021 12 27.21436802 35 16.96 +29 11 33.3          18.84GVEY063I52
     K17Y05K mC2021 12 27.21461502 35 17.46 +29 11 35.0          18.83GVEY063I52
     K17Y05K mC2021 12 27.21486102 35 17.96 +29 11 37.0          18.92GVEY063I52
     K17Y05K mC2021 12 27.27386802 37 17.99 +29 19 12.9          18.69GVEY063I52
     K17Y05K mC2021 12 27.27411402 37 18.50 +29 19 14.8          18.75GVEY063I52
     K17Y05K mC2021 12 27.27436102 37 18.99 +29 19 16.6          18.85GVEY063I52
     K17Y05K mC2021 12 27.27460702 37 19.51 +29 19 18.6          18.72GVEY063I52
     K17Y05K mC2021 12 27.31103402 38 33.90 +29 23 51.5          18.89GVEY063I52
     K17Y05K mC2021 12 27.31128002 38 34.41 +29 23 53.4          18.89GVEY063I52
     K17Y05K mC2021 12 27.31152702 38 34.90 +29 23 55.2          18.86GVEY063I52
     K17Y05K mC2021 12 27.31177302 38 35.41 +29 23 57.0          19.05GVEY063I52
     K17Y05K 1C2021 12 27.82757 02 56 21.43 +30 24 22.4          20.2 VVEY063033
     K17Y05K 1C2021 12 27.82785 02 56 21.97 +30 24 24.1          20.6 VVEY063033
     K17Y05K 1C2021 12 27.82814 02 56 22.56 +30 24 26.2          20.7 VVEY063033
     K17Y05K 1C2021 12 27.82855 02 56 23.36 +30 24 29.0          20.4 VVEY063033
     K17Y05K KC2021 12 28.72280 03 25 22.60 +31 42 24.6          18.9 GXEY063G02
     K17Y05K KC2021 12 28.73003 03 25 35.71 +31 42 55.7          19.2 GXEY063G02
     K17Y05K KC2021 12 28.73727 03 25 48.85 +31 43 27.2          19.1 GXEY063G02

Observer details:
033 Karl Schwarzschild Observatory, Tautenburg.  Observers S. Melnikov, C.
    Hoegner, U. Laux, F. Ludwig, B. Stecklum.  Measurer B. Stecklum.  1.34-m
    f/3 Schmidt + CCD.
703 Catalina Sky Survey.  Observer H. Groeller.  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.
G02 KYSUCE Observatory, Kysucke Nove Mesto.  Observer M. Urbanik.  0.40-m
    f/5.5 Corrected Dall-Kirkham + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer H. Groeller.  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.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or zero decimals in degrees), reference and Delta-T
211227 703   39+   29+    211228 G02   46+   30+    MPO477901   +9.43 days

Orbital elements:
2017 YK5                                                 Earth MOID = 0.0101 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
M  14.16473              (2000.0)            P               Q                  
n   0.24539261     Peri.    2.66598     +0.66322760     -0.74832770             
a   2.5267468      Node    45.78786     +0.68635982     +0.60197516             
e   0.6427964      Incl.    0.92815     +0.29839461     +0.27862443             
P   4.02           H   24.01          G   0.15           U   0                  
Residuals in seconds of arc
171225 703  0.2+  0.4+    171226 926  0.3+  0.1+    180105 926  0.4-  0.8-
171225 703  0.9-  0.8-    171226 I52  0.5-  0.4-    180106 I52  0.1-  0.0
171225 703  0.1+  0.1+    171226 I52  0.5-  0.4-    180106 I52  0.2-  0.5+
171225 I52  0.4-  0.3-    171226 I52  0.2-  0.1-    180106 I52  0.0   0.8+
171225 I52  0.1-  0.3-    171226 I52  0.4-  0.0     180112 G96  0.0   0.1-
171225 I52  0.4-  0.2-    171226 711  0.2-  0.4-    180112 I52  0.0   0.0
171225 I52  0.5-  0.3-    171226 711  0.1+  0.0     180112 G96  0.1+  0.1+
171225 I52  0.8+  0.1-    171226 711  0.1-  0.0     180112 I52  0.3+  0.0
171225 I52  1.0+  0.0     171226 C43  0.3-  0.9+    180112 I52  0.1+  0.1-
171225 I52  0.8+  0.2-    171226 C43  0.1-  0.9+    180112 G96  0.1+  0.1+
171225 I52  1.1+  0.2-    171226 C43  0.1-  0.2+    180112 I52  0.1+  0.4+
171225 I52  0.7+  0.1-    171226 C43  0.2+  1.6-    180112 G96  0.2+  0.2-
171225 I52  0.3+  0.3-    171227 H21  0.3-  0.1-    180115 F51  0.0   0.0
171225 I52  1.0+  0.1-    171227 H21  0.4-  0.2-    180115 F51  0.0   0.0
171225 113  0.5+  0.2+    171227 H21  0.4-  0.2-    180115 F51  0.0   0.0
171225 113  0.7+  0.6+    171227 H21  0.4-  0.2-    180115 F51  0.0   0.0
171225 113  0.2+  0.2+    171227 H21  0.4-  0.1-    211227 703  0.2-  0.0
171225 113  0.2+  0.6+    171227 H21  0.3-  0.0     211227 703  0.1+  0.1+
171225 G34  0.1-  0.9+    171227 H21  0.3-  0.0     211227 703  0.3-  0.1+
171225 G34 (1.0+  0.9+)   171227 H21  0.5-  0.2-    211227 703  0.4-  0.1+
171225 G34 (2.6+  2.4+)   171227 H21  0.5-  0.2-    211227 I52  0.0   0.1-
171225 G34 (1.4-  0.9-)   171227 H21  0.4-  0.2-    211227 I52  0.1+  0.2+
171225 K88  0.2-  0.1+    171227 I52  0.9+  0.2-    211227 I52  0.0   0.0
171225 K88  0.3-  0.0     171227 I52  0.9+  0.4-    211227 I52  0.0   0.1+
171225 C47  0.0   0.1-    171227 I52  1.0+  0.3-    211227 I52  0.1-  0.0
171225 K88  0.2-  0.0     171227 T08 (3.3-  1.3-)   211227 I52  0.0   0.0
171225 C47  0.2-  0.2-    171227 T08 (2.5+  0.2+)   211227 I52  0.1-  0.0
171225 C47  0.3-  0.0     171227 T08 (1.0+  1.3-)   211227 I52  0.0   0.1+
171225 C47  0.4-  0.2-    171227 T08 (1.6+  0.2-)   211227 I52  0.1-  0.1-
171225 C47  0.3-  0.3-    171227 J95  0.1-  0.0     211227 I52  0.0   0.0
171225 C47  0.1-  0.2-    171227 J95  0.2-  0.2-    211227 I52  0.1-  0.0
171225 246  0.2-  0.5-    171227 J95  0.5-  0.0     211227 I52  0.0   0.1-
171225 246  0.3-  0.0     171227 J95  0.2-  0.0     211227 033  0.1-  0.2-
171225 246  0.2-  0.4-    171227 J95  0.2-  0.1+    211227 033  0.1-  0.3-
171225 246  0.7+  0.1-    171227 J95  0.0   0.2+    211227 033  0.1+  0.0
171225 246  0.7+  0.5-    171227 Z80  0.9-  0.4+    211227 033  0.0   0.2+
171225 246  0.1+  0.1+    171227 Z80  0.3+  0.5-    211228 G02  1.6+  0.6-
171225 246  0.4+  0.9-    171227 Z80  0.3-  0.9-    211228 G02  1.3+  0.8-
171226 926  0.3-  0.1-    180105 926  0.0   0.2-    211228 G02  1.3+  0.5-
171226 926  0.2-  0.1-    180105 926  0.0   0.1+

Ephemeris:
2017 YK5                 a,e,i = 2.53, 0.64, 1                   q = 0.9026
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 28    20 35 59.5 -18 01 51   0.2100  0.9040    61.1   107.2    24.4
...
2021 12 13    21 39 32.4 -09 36 36   0.1041  0.9421    63.2   111.2    23.2
...
2021 12 21    23 22 42.3 +06 54 39   0.05866 0.9806    85.2    91.3    21.0
...
2021 12 27    02 27 48.9 +28 41 53   0.05246 1.0163   127.5    50.1    19.5
2021 12 28    03 02 05.1 +30 42 52   0.05525 1.0227   134.2    43.6    19.5
2021 12 29    03 33 43.7 +32 01 05   0.05894 1.0293   140.0    37.9    19.4
...
2022 01 04    05 35 16.0 +32 14 01   0.09309 1.0710   159.5    18.8    20.0
...
2022 01 12    06 36 19.9 +29 22 47   0.1530  1.1321   165.2    12.8    21.0
...
2022 01 27    07 15 57.8 +26 17 38   0.2868  1.2579   159.9    15.6    22.7

A. U. Tomatic                (C) Copyright 2021 MPC           M.P.E.C. 2021-Y63




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