[Iaude] MPEC K37: 2021 AL6 [a=2.44,e=0.66,i=17.4,H=20.57]

mpec at cfa.harvard.edu mpec at cfa.harvard.edu
Tue May 21 10:11:03 EDT 2024


M.P.E.C. 2024-K37                                  Issued 2024 May 21, 14:09 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 AL6                                    


                           Revision to MPEC 2021-A193                           

Additional Observations:
     K21A06L DC2024 05 18.41290 20 44 46.98 -06 45 22.5                VEK037695
     K21A06L DC2024 05 18.42332 20 44 48.22 -06 45 05.1          22.8 GVEK037695
     K21A06L DC2024 05 20.43614 20 49 02.14 -05 47 43.7          22.9 GVEK037695
     K21A06L DC2024 05 20.44567 20 49 03.31 -05 47 27.2                VEK037695
     K21A06L DC2024 05 20.45521 20 49 04.51 -05 47 10.3                VEK037695

Observer details:
695 Kitt Peak.  Observer A. F. Tubbiolo.  2.3-m f/9 reflector + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
240518 695  4.1+  1.7+    240520 695  4.0+  1.9+    MPO740957   +0.06 days

Orbital elements:
2021 AL6                                            PHA, Earth MOID = 0.0088 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Veres                   
M 320.65260              (2000.0)            P               Q                  
n   0.25921516     Peri.  125.97522     +0.91677860     -0.28073555             
a   2.4361038      Node   251.85898     +0.19532976     +0.93557423             
e   0.6569215      Incl.   17.39425     +0.34837233     +0.21421581             
P   3.80           H   20.57          G   0.15           U   0                  
Residuals in seconds of arc
200614 F51  0.0   0.0     210113 I52  0.1+  0.4+    210117 I52  0.1-  0.0
200614 F51  0.0   0.0     210113 L01  0.1+  0.4-    210117 I52  0.1+  0.1-
200614 F51  0.0   0.3-    210113 L01  1.3-  0.1-    210117 I52  0.1+  0.1+
200617 F52  0.4+  0.0     210114 I52 (0.3-  2.0-)   210117 691  0.3+  0.1+
200617 F52  0.3-  0.0     210114 I52  0.7-  0.1-    210117 691  0.1+  0.1-
200626 F51  0.2-  0.4+    210114 I52  0.2+  0.0     210117 807  0.1+  0.1+
200626 F51  0.2-  0.0     210114 I52  0.7-  0.0     210117 807  0.1+  0.1-
200708 F51  0.2-  0.3+    210114 673  0.2+  0.1+    210117 807  0.0   0.2+
200708 F51  0.3+  0.1-    210114 673  0.0   0.1+    210117 691  0.3-  0.4-
200708 F51  0.0   0.2+    210114 F52  0.2-  0.1+    210118 691  0.2+  0.0
200711 F51  0.0   0.0     210114 F52  0.2-  0.2-    210118 691  0.0   0.1+
200711 F51  0.0   0.1-    210114 F52  0.4+  0.2-    210118 I52  0.1+  0.2+
200711 F51  0.2-  0.1+    210114 F52  0.3-  0.2+    210118 I52  0.2+  0.0
200718 F51  0.0   0.1+    210114 474  0.7-  0.9-    210118 I52  0.2-  0.3-
200718 F51  0.1+  0.1+    210114 474  0.6+  0.6-    210118 I52  0.1-  0.2-
200718 F51  0.3+  0.1-    210114 474  0.8-  0.2-    210119 691  0.2+  0.3-
201215 F51  0.0   0.0     210114 474  0.1-  0.5+    210119 691  0.1+  0.1+
201215 F51  0.0   0.1+    210114 474  0.2+  0.4+    210119 691  0.2-  0.2-
201215 F51  0.1-  0.0     210115 I52  0.1+  0.1-    210201 695  0.0   0.3+
201215 F51  0.1-  0.1+    210115 I52  0.8+  0.2-    210201 695  0.1+  0.4+
201227 C51  0.8+  0.2-    210115 I52  0.1-  0.1-    210203 H21  0.2-  0.1+
201227 C51  0.2+  0.1+    210115 I52  0.0   0.2-    210203 H21  0.1+  0.2-
201228 C51  0.6+  0.8-    210116 291  0.7+  0.5-    210203 H21  0.2+  0.4+
201228 C51  0.1-  1.0-    210116 291  0.2+  0.0     210207 V06  0.5-  0.1-
201228 C51  0.0   0.2-    210116 291  0.1+  0.0     210207 V06  0.0   0.3+
210107 F51  0.1+  0.2+    210116 I52  0.3-  0.0     210207 V06  0.1+  0.1+
210113 G96  0.4+  0.1-    210116 I52  0.1-  0.0     240518 695  0.3+  0.0
210113 G96  0.1+  0.3+    210116 I52  0.2-  0.0     240518 695  0.3-  0.0
210113 G96  0.1+  0.4-    210116 I52  0.3-  0.1+    240520 695  0.1+  0.1+
210113 G96  0.3+  0.1-    210116 F52  0.0   0.1+    240520 695  0.2-  0.1-
210113 I52  0.3-  0.1+    210116 F52  0.1+  0.0     240520 695  0.0   0.1+
210113 I52  0.1-  0.1-    210116 F52  0.1+  0.1+
210113 I52  0.4+  0.2+    210117 I52  0.1-  0.1+

Ephemeris:
2021 AL6                 a,e,i = 2.44, 0.66, 17                  q = 0.8358
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 04 21    19 51 37.1 -16 06 15   1.4980  1.8641    94.2    32.5    24.2
...
2024 05 06    20 19 56.3 -11 43 20   1.2246  1.7292   101.0    34.9    23.6
...
2024 05 14    20 35 43.7 -08 41 31   1.0877  1.6553   104.1    36.3    23.3
...
2024 05 20    20 48 06.4 -06 00 20   0.9901  1.5992   106.0    37.5    23.1
2024 05 21    20 50 13.7 -05 31 04   0.9744  1.5898   106.3    37.7    23.0
2024 05 22    20 52 22.3 -05 01 04   0.9587  1.5804   106.6    37.9    23.0
...
2024 05 28    21 05 42.2 -01 44 03   0.8681  1.5236   107.9    39.3    22.7
...
2024 06 05    21 25 09.7 +03 31 10   0.7570  1.4472   108.7    41.6    22.4
...
2024 06 20    22 10 47.5 +16 47 47   0.5862  1.3033   105.7    48.6    21.8

A. U. Tomatic                (C) Copyright 2024 MPC           M.P.E.C. 2024-K37





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