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    • MPEC 2023-S71 : 2023 RO21

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    M.P.E.C. 2023-S71                            Issued 2023 September 19, 11:26 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 RO21                                


Observations:
     K23R21O  C2023 09 08.41051223 35 49.455-18 44 51.55         22.22GVES071F51
     K23R21O  C2023 09 08.42233223 35 51.784-18 44 38.78         20.69GVES071F51
     K23R21O  C2023 09 12.40475623 51 09.741-17 22 55.41         22.14GVES071F52
     K23R21O  C2023 09 12.41497723 51 11.922-17 22 41.74         22.24GVES071F52
     K23R21O* C2023 09 15.42918900 03 16.698-16 07 07.78         22.00wXES071F51
     K23R21O  C2023 09 15.45158600 03 21.548-16 06 31.69         22.10wXES071F51
     K23R21O  C2023 09 15.46279500 03 23.981-16 06 13.46         21.77wXES071F51
     K23R21O KC2023 09 16.33921200 06 58.511-15 42 10.73         21.70GVES071I52
     K23R21O KC2023 09 16.34618500 06 59.969-15 41 59.14         21.90GVES071I52
     K23R21O KC2023 09 16.35314900 07 01.520-15 41 46.79         22.04GVES071I52
     K23R21O 3C2023 09 16.48846600 07 34.383-15 37 45.60         21.98GVES071T14
     K23R21O 3C2023 09 16.48944400 07 34.596-15 37 43.91         21.93GVES071T14
     K23R21O 3C2023 09 16.49042100 07 34.810-15 37 42.24         21.97GVES071T14

Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, P.
    Minguez, A. Schultz, I. Smith.  Measurers S. Chastel, J. Fairlamb, M.
    Huber, Y. Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers, T. de Boer, J.
    Bulger, H. Gao, C.-C. Lin, T. Lowe, E. Magnier, P. Minguez, A. Schultz, I.
    Smith.  1.8-m Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Dukes, T.
    Lowe, P. Minguez, A. Schultz, I. Smith.  Measurers S. Chastel, J.
    Fairlamb, M. Huber, Y. Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m
    Ritchey-Chretien + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer D. C. Fuls.  Measurers
    E. J. Christensen, 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, A. Serrano, F. C. Shelly, K. W.
    Wierzchos.  1.0-m prime focus + CCD.
T14 Canada-France-Hawaii Telescope, Maunakea.  Observers R. Wainscoat, H.
    Januszewski, H. Flewelling.  Measurers R. Weryk, R. Wainscoat.  3.6-m
    Canada-France-Hawaii Telescope + CCD.

Orbital elements:
2023 RO21                                                Earth MOID = 0.1242 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
M 355.10221              (2000.0)            P               Q                  
n   0.31800383     Peri.  308.47797     +0.99553412     -0.09020648             
a   2.1257612      Node    56.71411     +0.09361356     +0.90530359             
e   0.4715456      Incl.    1.90794     +0.01217833     +0.41507615             
P   3.10           H   25.45          G   0.15           U   9                  
Residuals in seconds of arc
230908 F51  0.1+  0.3-    230915 F51  0.0   0.1+    230916 T14  0.0   0.0
230908 F51  0.1-  0.0     230915 F51  0.1+  0.1+    230916 T14  0.0   0.0
230912 F52  0.2-  0.2+    230916 I52  0.9+  0.3-    230916 T14  0.0   0.0
230912 F52  0.1+  0.0     230916 I52  0.3-  0.5-
230915 F51  0.0   0.2+    230916 I52  0.1-  0.1-

Ephemeris:
2023 RO21                a,e,i = 2.13, 0.47, 2                   q = 1.1234
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 08 20    22 37 15.3 -21 24 32   0.1965  1.2041   166.6    11.2    23.0
...
2023 09 04    23 20 02.1 -19 51 56   0.1510  1.1555   165.6    12.6    22.4
...
2023 09 12    23 49 32.7 -17 31 32   0.1355  1.1381   164.9    13.3    22.2
...
2023 09 18    00 13 48.2 -14 52 48   0.1282  1.1293   164.8    13.5    22.0
2023 09 19    00 17 56.2 -14 21 56   0.1274  1.1282   164.8    13.5    22.0
2023 09 20    00 22 04.8 -13 49 53   0.1266  1.1273   164.8    13.5    22.0
...
2023 09 26    00 46 45.8 -10 16 10   0.1245  1.1237   165.3    13.1    21.9
...
2023 10 04    01 17 20.5 -04 57 53   0.1276  1.1251   166.6    11.9    22.0
...
2023 10 19    02 00 22.1 +04 18 47   0.1516  1.1464   171.3     7.6    22.2

M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-S71

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