[Iaude] MPEC J21: 2021 MM1 [a=2.13,e=0.40,i=5.0,H=21.51]

mpec at cfa.harvard.edu mpec at cfa.harvard.edu
Thu May 2 10:14:33 EDT 2024


M.P.E.C. 2024-J21                                   Issued 2024 May 2, 14:13 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 MM1                                    


                           Revision to MPEC 2021-M95                            

Additional Observations:
     K21M01M  C1996 09 09.12930 21 45 44.29 +03 14 31.3          21.7 VaEJ021691
     K21M01M  C1996 09 09.15025 21 45 44.53 +03 14 23.2          21.9 VaEJ021691
     K21M01M  C1996 09 09.17106 21 45 44.68 +03 14 15.5          21.0 VaEJ021691
     K21M01M KC2024 05 01.31255615 31 42.658-27 02 38.51         22.32GVEJ021I52
     K21M01M KC2024 05 01.32342915 31 42.348-27 02 35.34         21.48GVEJ021I52
     K21M01M KC2024 05 01.33516315 31 42.064-27 02 32.96         21.10GVEJ021I52
     K21M01M KC2024 05 01.34958315 31 41.693-27 02 30.16         20.97GVEJ021I52

Observer details:
691 Steward Observatory, Kitt Peak-Spacewatch.  Observer T. Gehrels.  0.9-m
    f/5 reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observers V. F. Carvajal, G. J.
    Leonard.  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.  1.0-m prime focus + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
960909 691 0.07+ 0.03+    240501 I52 0.01+ 0.00+    E2024-D99   +0.00 days

Orbital elements:
2021 MM1                                                 Earth MOID = 0.2768 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Veres                   
M 321.09768              (2000.0)            P               Q                  
n   0.31602172     Peri.   31.49032     +0.35851318     +0.92953478             
a   2.1346406      Node   259.64001     -0.87367267     +0.30155591             
e   0.3962975      Incl.    5.02820     -0.32888352     +0.21220068             
P   3.12           H   21.51          G   0.15           U   0                  
Residuals in seconds of arc
960909 691  0.4+  0.6-    210627 695  0.1-  0.2-    210907 G96  0.0   0.0
960909 691  0.5+  0.3-    210627 695  0.0   0.1-    210907 G96  0.1+  0.1-
960909 691  0.6-  0.4+    210627 695  0.1-  0.1-    210907 G96  0.2-  0.1-
210514 F51  0.0   0.3+    210714 H21  0.2-  0.1+    210910 F52  0.1+  0.1-
210514 F51  0.6-  0.1-    210714 H21  0.2-  0.2+    210910 F52  0.1+  0.1+
210514 F51  0.1+  0.2+    210714 H21  0.3-  0.2-    210910 F52  0.1+  0.1-
210618 F51  0.0   0.1+    210719 H21  0.2-  0.2+    210926 H21  1.0-  0.8+
210618 F51  0.2+  0.1+    210719 H21  0.2-  0.3+    210926 H21  1.1-  1.2+
210618 F51  0.0   0.0     210801 H21  0.6+  0.5+    210926 H21  1.0-  0.7+
210618 F51  0.1+  0.0     210801 H21  1.1+  0.4-    211002 F51  0.0   0.0
210619 F51  0.2-  0.1-    210801 H21  0.9+  0.1-    211002 F51  0.1-  0.1-
210619 F51  0.1+  0.2-    210802 H21  0.0   0.3+    211002 F51  0.2+  0.0
210619 F51  0.2-  0.1-    210802 H21  0.2-  0.3+    211002 F51  0.1+  0.0
210619 F51  0.1+  0.1+    210802 H21  0.1+  0.3+    240501 I52  0.4+  0.4-
210621 807  0.3+  0.3-    210803 H21  0.1+  0.3-    240501 I52  0.1-  0.4+
210621 807  0.2+  0.6-    210803 H21  0.1+  0.3-    240501 I52  0.0   0.3+
210621 807  0.4+  0.8-    210803 H21  0.1-  0.3-    240501 I52  0.1-  0.1-

Ephemeris:
2021 MM1                 a,e,i = 2.13, 0.40, 5                   q = 1.2887
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 04 02    15 26 16.7 -26 46 40   0.8101  1.6789   135.9    24.5    23.3
...
2024 04 17    15 32 42.6 -27 22 14   0.6601  1.6050   148.7    19.0    22.6
...
2024 04 25    15 33 01.0 -27 18 52   0.5930  1.5668   156.1    15.1    22.2
...
2024 05 01    15 31 48.2 -27 03 32   0.5490  1.5388   161.9    11.8    21.9
2024 05 02    15 31 29.2 -26 59 48   0.5422  1.5342   162.8    11.2    21.8
2024 05 03    15 31 08.3 -26 55 42   0.5356  1.5297   163.8    10.6    21.7
...
2024 05 09    15 28 27.7 -26 23 29   0.4990  1.5028   169.4     7.1    21.4
...
2024 05 17    15 23 48.2 -25 20 06   0.4593  1.4684   173.4     4.6    21.1
...
2024 06 01    15 15 18.8 -22 28 46   0.4111  1.4096   161.3    13.4    21.1

A. U. Tomatic                (C) Copyright 2024 MPC           M.P.E.C. 2024-J21





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