M.P.E.C. 2023-D20 Issued 2023 February 18, 13:32 UT

 M.P.E.C. 2023-D20 Issued 2023 February 18, 13:32 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@CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                2023 CB4                                 


Observations:
     K23C04B*!C2023 02 13.35854 10 30 39.69 -36 28 44.9          22.9 GXED020W84
     K23C04B !C2023 02 13.36685 10 30 39.72 -36 28 49.1          22.8 GXED020W84
     K23C04B !C2023 02 13.36960 10 30 39.74 -36 28 50.4          22.9 GXED020W84
     K23C04B !C2023 02 13.38344 10 30 39.82 -36 28 57.1          23.0 GXED020W84
     K23C04B |C2023 02 14.18867 10 30 57.67 -36 36 40.0          22.5 GVED020807
     K23C04B |C2023 02 14.19624 10 30 57.67 -36 36 44.2          22.4 GVED020807
     K23C04B |C2023 02 14.20376 10 30 57.64 -36 36 48.9          22.5 GVED020807
     K23C04B |C2023 02 14.21115 10 30 57.66 -36 36 54.0          22.4 GVED020807
     K23C04B |C2023 02 15.18304 10 31 14.60 -36 45 02.2          22.6 GVED020807
     K23C04B |C2023 02 15.19691 10 31 14.57 -36 45 09.1          22.7 GVED020807
     K23C04B |C2023 02 15.22483 10 31 14.49 -36 45 23.5          22.6 GVED020807
     K23C04B |C2023 02 18.23726 10 31 58.36 -37 03 33.7          22.4 GVED020807
     K23C04B |C2023 02 18.25112 10 31 58.26 -37 03 37.1          22.5 GVED020807
     K23C04B |C2023 02 18.26388 10 31 58.21 -37 03 40.0          22.6 GVED020807

Observer details:
807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes, L.
    Horn.  1.00-m f/10.0 astrograph + CCD.
W84 Cerro Tololo-DECam.  Observer .  Measurer F. Valdes.  4.0-m CTIO reflector
    + DECam.

Orbital elements:
2023 CB4                                                 Earth MOID = 0.1602 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5                 Veres                   
M   0.41376              (2000.0)            P               Q                  
n   0.68838256     Peri.  302.10625     -0.92085701     -0.38204716             
a   1.2703288      Node   215.60543     +0.38735635     -0.87364656             
e   0.1113324      Incl.    7.68552     +0.04446821     -0.30129995             
P   1.43           H   24.42          G   0.15           U   9                  
Residuals in seconds of arc
230213 W84  0.1-  0.2-    230214 807  0.1+  0.2+    230215 807  0.1+  0.4-
230213 W84  0.3-  0.2-    230214 807  0.2-  0.2-    230218 807  0.1-  0.1+
230213 W84  0.2-  0.2-    230214 807 (0.2+  1.2-)   230218 807  0.2-  0.1-
230213 W84  0.3-  0.1-    230215 807  0.1+  0.2+    230218 807  0.2+  0.1-
230214 807  0.0   0.0     230215 807  0.1+  0.4+

Ephemeris:
2023 CB4                 a,e,i = 1.27, 0.11, 8                   q = 1.1289
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 01 19    10 14 31.2 -27 39 38   0.2629  1.1455   122.1    46.7    23.6
...
2023 02 03    10 26 11.5 -33 53 14   0.2293  1.1348   125.7    44.8    23.2
...
2023 02 11    10 29 54.1 -36 02 27   0.2137  1.1312   128.1    43.4    23.0
...
2023 02 17    10 31 41.5 -36 57 19   0.2028  1.1296   130.2    41.9    22.9
2023 02 18    10 31 55.4 -37 02 26   0.2011  1.1294   130.6    41.6    22.8
2023 02 19    10 32 08.5 -37 06 19   0.1994  1.1293   131.0    41.4    22.8
...
2023 02 25    10 33 16.5 -37 02 25   0.1898  1.1289   133.6    39.4    22.6
...
2023 03 05    10 35 00.6 -35 40 06   0.1786  1.1299   137.5    36.3    22.4
...
2023 03 20    10 42 15.7 -28 58 06   0.1652  1.1360   145.7    29.6    22.1

M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-D20

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