[Iaude] MPEC K153: 2021 WH1 [a=1.32,e=0.11,i=22.1,H=21.44]

mpec at cfa.harvard.edu mpec at cfa.harvard.edu
Fri May 31 10:15:29 EDT 2024


M.P.E.C. 2024-K153                                 Issued 2024 May 31, 14:14 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets, routine data on comets and natural satellites,
         and occasional editorial announcements.  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 WH1                                    


                           Revision to MPEC 2021-W79                            

Additional Observations:
     K21W01H 1C2018 11 18.26757 03 47 30.17 +38 09 45.5          20.8 GVEK153G96
     K21W01H 1C2018 11 18.27491 03 47 29.16 +38 09 21.3          20.9 GVEK153G96
     K21W01H KC2024 05 30.42062521 06 10.645+04 43 50.20         21.42GVEK153V06
     K21W01H KC2024 05 30.42527321 06 11.041+04 44 09.60         20.97GVEK153V06
     K21W01H KC2024 05 30.42991521 06 11.423+04 44 28.79         20.83GVEK153V06
     K21W01H KC2024 05 30.43455821 06 11.819+04 44 48.16         20.88GVEK153V06

Observer details:
G96 Mt. Lemmon Survey.  Observer H. Groeller.  Measurers B. Gray, D. Rankin,
    F. C. Shelly.  1.5-m reflector + 10K CCD.
V06 Catalina Sky Survey-Kuiper.  Observer V. F. Carvajal.  Measurers T.
    Beuden, V. F. Carvajal, D. Fay, J. B. Fazekas, D. C. Fuls, A. R. Gibbs, A.
    D. Grauer, H. Groeller, J. K. Hogan, R. A. Kowalski, S. M. Larson, G. J.
    Leonard, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.55-m
    reflector + 1K CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
181118 G96 0.07- 0.01-    240530 V06 0.02- 0.01-    E2024-BH3   +0.04 days

Orbital elements:
2021 WH1                                                 Earth MOID = 0.2137 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Veres                   
M 288.79855              (2000.0)            P               Q                  
n   0.64900211     Peri.   57.95232     +0.55374176     +0.75385069             
a   1.3212104      Node   249.80966     -0.83258930     +0.49470039             
e   0.1081095      Incl.   22.13688     -0.01284966     +0.43241261             
P   1.52           H   21.44          G   0.15           U   2                  
Residuals in seconds of arc
181118 G96  0.2+  0.1+    211126 033  0.7-  0.6-    211202 I52  0.3-  0.5-
181118 G96  0.1-  0.1+    211127 858  0.1-  0.2-    211202 I52  0.2-  0.5+
211125 F51  0.1-  0.2+    211127 858  0.3+  0.9-    211205 291  0.1-  0.3+
211125 F51  0.1+  0.1-    211128 858  0.2+  0.4+    211205 291  0.3-  0.1+
211125 F51  0.1-  0.0     211128 858  0.5-  0.8+    211206 I52  0.1+  0.2-
211125 F51  0.0   0.0     211201 I52  0.0   0.6+    211206 I52  0.3+  0.3+
211125 F51  0.1+  0.0     211201 I52  0.1-  0.3-    211206 I52  0.3-  0.4-
211126 858  0.7-  0.8-    211201 I52  0.3-  0.0     211208 691  0.8+  0.9+
211126 734  0.5-  0.5-    211202 291  0.5+  0.1-    211208 691  0.4+  1.0-
211126 858  0.4-  0.2-    211202 291  0.2-  0.1+    240530 V06  0.1+  0.1-
211126 734  0.8+  0.1-    211202 291  0.2+  0.0     240530 V06  0.1+  0.0
211126 734  0.0   0.2-    211202 I52  0.2+  1.4+    240530 V06  0.1-  0.0
211126 033  0.2+  0.4-    211202 I52  0.1+  0.1-    240530 V06  0.1-  0.2+

Ephemeris:
2021 WH1                 a,e,i = 1.32, 0.11, 22                  q = 1.1784
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 05 01    20 07 45.5 -23 20 12   0.5504  1.2418   101.7    52.6    22.5
...
2024 05 16    20 40 51.9 -10 39 10   0.4681  1.2216   105.4    52.9    22.2
...
2024 05 24    20 55 41.0 -02 26 36   0.4351  1.2120   106.8    53.1    22.0
...
2024 05 30    21 05 31.2 +04 15 00   0.4162  1.2055   107.4    53.4    21.9
2024 05 31    21 07 03.0 +05 23 58   0.4136  1.2045   107.5    53.4    21.9
2024 06 01    21 08 32.9 +06 33 24   0.4111  1.2035   107.5    53.5    21.9
...
2024 06 07    21 16 51.3 +13 36 25   0.3993  1.1977   107.6    53.9    21.8
...
2024 06 15    21 26 04.2 +23 00 55   0.3918  1.1912   107.1    54.6    21.8
...
2024 06 30    21 37 21.0 +39 10 05   0.3987  1.1824   104.7    56.3    21.8

A. U. Tomatic                (C) Copyright 2024 MPC           M.P.E.C. 2024-K153





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