[Iaude] MPEC Y154: 2020 YZ4 [a=1.24,e=0.28,i=1.1,H=27.2]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Tue Dec 29 15:16:53 EST 2020


M.P.E.C. 2020-Y154                            Issued 2020 December 29, 20:15 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 YZ4                                    


Observations:
     K20Y04Z* C2020 12 27.16969207 22 58.70 +37 17 44.4          20.17GVEY154G96
     K20Y04Z  C2020 12 27.18935107 22 55.12 +37 14 24.4          19.97GVEY154G96
     K20Y04Z  C2020 12 27.19741007 22 53.58 +37 13 03.6          20.56GVEY154G96
     K20Y04Z KC2020 12 27.37689007 22 11.08 +36 42 01.7                VEY154I52
     K20Y04Z KC2020 12 27.37961507 22 10.41 +36 41 33.0          19.82GVEY154I52
     K20Y04Z KC2020 12 27.38234207 22 09.75 +36 41 03.8          19.60GVEY154I52
     K20Y04Z KC2020 12 27.38506607 22 09.12 +36 40 34.5          19.58GVEY154I52
     K20Y04Z bC2020 12 27.73536107 22 00.81 +35 38 48.8          20.3 GVEY154L01
     K20Y04Z bC2020 12 27.73908307 22 00.49 +35 38 16.4          20.4 GVEY154L01
     K20Y04Z bC2020 12 27.75501407 21 59.07 +35 35 59.8          19.7 GVEY154L01
     K20Y04Z bC2020 12 27.75962707 21 58.66 +35 35 19.5          20.1 GVEY154L01

Observer details:
G96 Mt. Lemmon Survey.  Observer T. A. Pruyne.  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.
I52 Steward Observatory, Mt. Lemmon Station.  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, T. A.
    Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.0-m
    reflector + CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.

Orbital elements:
2020 YZ4                                                 Earth MOID = 0.0087 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Pike                    
M  28.18740              (2000.0)            P               Q                  
n   0.71068333     Peri.   99.27511     +0.81419895     -0.58032508             
a   1.2436131      Node   296.20022     +0.52477305     +0.74842159             
e   0.2795160      Incl.    1.11140     +0.24838139     +0.32107310             
P   1.39           H   27.26          G   0.15           U   7                  
Residuals in seconds of arc
201227 G96 (0.7-  1.0+)   201227 I52  0.1-  0.1+    201227 L01  0.0+  0.1-
201227 G96  0.2-  0.3-    201227 I52  0.1-  0.1+    201227 L01  0.3-  0.3+
201227 G96  0.2+  0.4+    201227 I52  0.3+  0.0+    201227 L01  0.0-  0.4-
201227 I52  0.1-  0.3-    201227 L01  0.3+  0.2+

Ephemeris:
2020 YZ4                 a,e,i = 1.24, 0.28, 1                   q = 0.8960
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 29    19 04 57.4 -13 25 02   0.08944 0.9196    39.9   136.5    28.2
...
2020 12 14    19 07 21.1 -01 03 14   0.02929 0.9600    33.1   145.9    27.2
...
2020 12 22    10 44 31.3 +83 56 11   0.0092740.9877   115.3    64.2    19.3
...
2020 12 28    07 21 20.1 +35 01 51   0.02830 1.0105   163.5    16.1    20.4
2020 12 29    07 20 09.8 +32 51 41   0.03210 1.0145   165.7    13.8    20.6
2020 12 30    07 19 14.8 +31 08 50   0.03596 1.0185   167.7    11.9    20.8
...
2021 01 05    07 16 02.7 +25 32 20   0.05991 1.0430   175.9     3.9    21.6
...
2021 01 13    07 14 06.1 +22 35 52   0.09416 1.0773   174.3     5.2    22.7
...
2021 01 28    07 15 56.4 +20 32 00   0.1680  1.1438   159.7    17.4    24.6

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-Y154




More information about the Iaude mailing list