[Iaude] MPEC X11: 2021 WY4 [a=4.76,e=0.94,i=13.5,H=20.6]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Wed Dec 1 07:58:19 EST 2021


M.P.E.C. 2021-X11                              Issued 2021 December 1, 12:51 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 WY4                                    


Observations:
     K21W04Y* C2021 11 28.27707422 37 56.236+22 03 52.98         20.95wUEX011F51
     K21W04Y  C2021 11 28.29048522 38 04.202+22 03 57.94         21.02wUEX011F51
     K21W04Y  C2021 11 28.30390922 38 12.181+22 04 02.86         21.19wUEX011F51
     K21W04Y  C2021 11 28.31734022 38 20.154+22 04 07.76         21.47wUEX011F51
     K21W04Y KC2021 11 29.02930122 45 17.60 +22 08 08.3                uEX011H21
     K21W04Y KC2021 11 29.04374522 45 25.67 +22 08 12.2          20.7 VuEX011H21
     K21W04Y KC2021 11 29.04831122 45 28.22 +22 08 13.9          20.9 VuEX011H21
     K21W04Y KC2021 11 30.01709722 54 25.03 +22 12 02.2          20.9 VuEX011H21
     K21W04Y KC2021 11 30.02343722 54 28.41 +22 12 03.5          21.2 VuEX011H21
     K21W04Y mC2021 11 30.08041322 54 58.94 +22 12 15.8          21.33GVEX011I52
     K21W04Y mC2021 11 30.08202222 54 59.77 +22 12 16.3          21.82GVEX011I52
     K21W04Y mC2021 11 30.08432622 55 01.06 +22 12 16.0          21.34GVEX011I52
     K21W04Y mC2021 11 30.08463122 55 01.12 +22 12 16.3          21.40GVEX011I52
     K21W04Y KC2021 11 30.99540723 02 54.26 +22 14 12.1          21.4 VuEX011H21
     K21W04Y KC2021 12 01.00421723 02 58.66 +22 14 13.2          21.1 VuEX011H21

Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, I.
    Smith.  Measurers K. Chambers, S. Chastel, T. de Boer, J. Fairlamb, H.
    Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
    Weryk.  1.8-m Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers T. Linder, R. Holmes, L. Horn.  0.81-m f/4.0 astrograph + CCD,
    0.76-m f/3.0 astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  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, D. Rankin, R. L.
    Seaman, F. C. Shelly, K. W. Wierzchos.

Orbital elements:
2021 WY4                                                 Earth MOID = 0.1965 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
M   9.67269              (2000.0)            P               Q                  
n   0.09497092     Peri.    7.29068     +0.24144628     +0.94232129             
a   4.7578303      Node   276.88694     -0.90170892     +0.12957475             
e   0.9350279      Incl.   13.50270     -0.35864288     +0.30861135             
P  10.4            H   20.61          G   0.15           U   9                  
Residuals in seconds of arc
211128 F51  0.3-  0.1+    211129 H21  0.2+  0.8-    211130 I52  0.2-  0.2+
211128 F51  0.1-  0.0     211129 H21  0.3-  0.4-    211130 I52  0.8+  0.5-
211128 F51  0.1+  0.0     211130 H21  0.2-  0.5-    211130 I52  0.6-  0.3-
211128 F51  0.3+  0.0     211130 H21  0.0   0.3-    211130 H21  0.1-  0.6+
211129 H21 (1.5+  0.5-)   211130 I52  0.0   0.1-    211201 H21  0.1+  0.9+

Ephemeris:
2021 WY4                 a,e,i = 4.76, 0.94, 14                  q = 0.3091
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 01    16 29 11.1 -03 37 09   0.4776  0.6437    32.6   123.9    23.2
...
2021 11 16    19 45 54.9 +14 52 09   0.3282  0.9439    72.5    88.1    21.2
...
2021 11 24    21 48 54.7 +21 05 48   0.3876  1.0931    95.2    64.1    21.0
...
2021 11 30    22 54 15.5 +22 12 05   0.4781  1.2003   104.7    52.6    21.3
2021 12 01    23 02 56.1 +22 14 17   0.4956  1.2178   105.7    51.2    21.4
2021 12 02    23 11 04.7 +22 15 03   0.5136  1.2352   106.6    49.9    21.5
...
2021 12 08    23 50 48.2 +22 02 32   0.6306  1.3375   109.8    43.9    21.9
...
2021 12 16    00 27 21.7 +21 34 15   0.8032  1.4689   110.1    39.0    22.5
...
2021 12 31    01 11 41.0 +21 02 27   1.1572  1.7016   105.0    33.9    23.5

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X11




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