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    • MPEC 2023-H98 : 2023 HT1

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    M.P.E.C. 2023-H98                                Issued 2023 April 19, 11:25 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 HT1                                 


Observations:
     K23H01T* C2023 04 17.40181315 06 53.021-11 20 37.75         20.74GVEH098V00
     K23H01T  C2023 04 17.40685215 06 50.512-11 18 37.87         20.74GVEH098V00
     K23H01T  C2023 04 17.41188315 06 48.078-11 16 41.77               VEH098V00
     K23H01T  C2023 04 17.41685115 06 45.590-11 14 44.48         21.78GVEH098V00
     K23H01T KC2023 04 17.44766 15 06 30.60 -11 02 47.2          21.6 RoEH098291
     K23H01T KC2023 04 17.45233 15 06 28.35 -11 00 58.7          21.0 RoEH098291
     K23H01T KC2023 04 17.45701 15 06 26.10 -10 59 10.0          20.6 RoEH098291
     K23H01T  C2023 04 17.49000515 06 15.133-10 46 13.85         20.40GVEH098F52
     K23H01T  C2023 04 17.50107515 06 09.744-10 41 58.98         21.26GVEH098F52
     K23H01T  C2023 04 17.52316915 05 59.007-10 33 34.50         20.45GVEH098F52
     K23H01T KC2023 04 18.30400315 00 48.20 -06 00 43.9                uEH098H21
     K23H01T KC2023 04 18.30961515 00 45.97 -05 58 55.3                uEH098H21
     K23H01T KC2023 04 18.31242015 00 44.83 -05 58 01.0          21.0 VuEH098H21
     K23H01T KC2023 04 18.31550715 00 43.61 -05 57 02.2          21.5 VuEH098H21
     K23H01T  C2023 04 18.48190314 59 45.075-05 04 08.61         20.86GVEH098F52
     K23H01T  C2023 04 18.49351814 59 40.508-05 00 32.72         20.47GVEH098F52
     K23H01T KC2023 04 19.26675 14 55 34.66 -01 20 44.6          20.7 RoEH098291
     K23H01T KC2023 04 19.27656 14 55 31.58 -01 18 10.3          21.4 RoEH098291

Observer details:
291 LPL/Spacewatch II.  Observer M. T. Read.  1.8-m f/2.7 reflector + CCD.
F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Dukes, T.
    Lowe, A. Schultz, I. Smith.  Measurers S. Chastel, J. Fairlamb, M. Huber,
    Y. Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers T. Linder, R. Holmes, L. Horn.  0.81-m f/4.0 astrograph + CCD.
V00 Kitt Peak-Bok.  Observer R. A. Mastaler.  Measurers M. J. Brucker, E. J.
    Christensen, C. E. Woodward, 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, R. S. McMillan, D. Rankin, R. L. Seaman, A.
    Serrano, F. C. Shelly, K. W. Wierzchos.  2.25-m reflector + 4x4K mosaic
    CCD.

Orbital elements:
2023 HT1                                                 Earth MOID = 0.0413 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5                 Veres                   
M   2.01708              (2000.0)            P               Q                  
n   0.45069750     Peri.  278.13725     -0.52747890     -0.82118896             
a   1.6847907      Node   207.42892     +0.83670583     -0.54657044             
e   0.5637476      Incl.   28.20984     -0.14727308     -0.16404101             
P   2.19           H   25.63          G   0.15           U   9                  
Residuals in seconds of arc
230417 V00  0.1+  1.0-    230417 291  0.2+  0.1-    230418 H21  0.2-  0.3+
230417 V00  0.3-  0.9+    230417 F52  0.5-  0.3+    230418 H21  0.1-  0.3-
230417 V00  0.4+  0.7-    230417 F52 (0.2-  1.2+)   230418 F52  0.3+  0.4-
230417 V00  0.3-  0.5+    230417 F52  0.2-  0.2+    230418 F52  0.1+  0.0
230417 291  0.0   0.2-    230418 H21  0.1-  0.3-    230419 291 (1.9-  0.3-)
230417 291  0.1+  0.2-    230418 H21  0.1+  0.1+    230419 291  0.0   0.0

Ephemeris:
2023 HT1                 a,e,i = 1.68, 0.56, 28                  q = 0.7350
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 03 20    01 48 32.2 -42 57 09   0.2837  0.8392    49.4   115.7    27.0
...
2023 04 04    01 05 20.6 -59 31 55   0.1196  0.9554    65.0   108.5    25.0
...
2023 04 12    17 05 40.4 -63 19 10   0.05655 1.0247   112.0    65.0    21.7
...
2023 04 18    15 02 43.5 -07 40 40   0.07884 1.0782   159.8    18.8    21.2
2023 04 19    14 56 53.4 -02 31 54   0.08773 1.0872   160.4    18.0    21.5
2023 04 20    14 52 09.4 +01 37 57   0.09728 1.0962   159.7    18.5    21.7
...
2023 04 26    14 35 41.3 +15 07 14   0.1620  1.1504   151.0    25.1    23.1
...
2023 05 04    14 26 23.0 +21 14 42   0.2568  1.2226   142.8    29.9    24.4
...
2023 05 19    14 21 10.7 +23 34 22   0.4477  1.3556   132.7    33.3    25.9

M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-H98

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