[Iaude] MPEC V213: 2022 YL7 [a=1.20,e=0.77,i=27.2,H=20.38]

[mpec at marsden.cfa.harvard.edu]

M.P.E.C. 2023-V213                            Issued 2023 November 12, 14:18 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

                                    2022 YL7                                    


                           Revision to MPEC 2023-A12                            

Additional Observations:
     K22Y07L 0C2023 10 21.55789304 00 41.409-25 09 52.72         23.34GVEV213T12
     K22Y07L 0C2023 10 21.57235504 00 39.914-25 10 08.53         23.43GVEV213T12
     K22Y07L 0C2023 11 08.50989803 24 46.978-29 25 11.24         23.32GVEV213T12
     K22Y07L 0C2023 11 08.53943403 24 42.961-29 25 27.13         23.66GVEV213T12

Observer details:
T12 University of Hawaii 88-inch telescope, Maunakea.  Observer D. J. Tholen.
    2.24-m f/10.1 reflector + 2112 x 2112 pixels STA1600 10k CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
231021 T12 47.4+ 11.2+    231108 T12 45.4+  1.8+    E2023-R03   -0.00 days

Orbital elements:
2022 YL7                                                 Earth MOID = 0.2002 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
M 148.16188              (2000.0)            P               Q                  
n   0.74810998     Peri.   76.26964     -0.69070860     +0.67390624             
a   1.2017822      Node   144.94390     -0.70044040     -0.71362622             
e   0.7728708      Incl.   27.16603     +0.17973560     -0.19127988             
P   1.32           H   20.38          G   0.15           U   4                  
Residuals in seconds of arc
221226 C51  0.1+  0.4+    230101 807  0.3-  0.0     230113 807 (0.1-  1.4+)
221226 C51  0.3-  0.7+    230101 807  0.2-  0.2+    230113 807 (0.4-  1.1-)
221226 C51  0.5+  0.2+    230102 807  0.1-  0.2+    230113 807  0.2-  0.2+
221226 C51  0.2+  0.7+    230102 807  0.0   0.1-    230120 807  0.1+  0.5-
221227 C51  0.8+  0.1-    230102 807  0.2+  0.1-    230120 807  0.4+  0.1+
221231 T12  0.1-  0.0     230105 807  0.0   0.1+    230120 807  0.3-  0.0
221231 T12  0.3+  0.1+    230105 807  0.0   0.1+    231021 T12  0.0   0.0
230101 807  0.3-  0.9-    230105 807  0.3+  0.0     231021 T12  0.0   0.0
230101 807  0.2+  0.3+    230110 807  0.1-  0.0     231108 T12  0.0   0.1-
230101 807  0.2+  0.0     230110 807  0.1-  0.2-    231108 T12  0.0   0.1-
230101 807  0.0   0.2-    230110 807  0.2-  0.2+

Ephemeris:
2022 YL7                 a,e,i = 1.20, 0.77, 27                  q = 0.2730
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 10 13    04 13 17.8 -22 23 19   1.3789  2.1266   126.2    22.3    23.8
...
2023 10 28    03 49 01.3 -26 59 56   1.3242  2.1305   133.1    19.9    23.6
...
2023 11 05    03 32 30.3 -28 49 05   1.3171  2.1279   133.8    19.6    23.6
...
2023 11 11    03 19 13.5 -29 45 47   1.3223  2.1238   132.9    20.0    23.6
2023 11 12    03 16 58.9 -29 52 55   1.3240  2.1230   132.6    20.1    23.6
2023 11 13    03 14 44.2 -29 59 22   1.3260  2.1220   132.3    20.2    23.6
...
2023 11 19    03 01 23.7 -30 23 38   1.3428  2.1156   129.7    21.1    23.7
...
2023 11 27    02 44 39.8 -30 18 41   1.3776  2.1040   124.9    22.6    23.8
...
2023 12 12    02 19 38.7 -28 33 08   1.4733  2.0735   113.6    25.8    24.0

A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-V213