[Iaude] MPEC J103: 2021 HW3 [a=2.54,e=0.55,i=16.9,H=21.7]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat May 8 18:59:16 EDT 2021


M.P.E.C. 2021-J103                                  Issued 2021 May 8, 22:58 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  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 HW3                                    


Observations:
     K21H03W  C2021 04 08.44595013 37 41.778+04 04 16.97         22.01GVEJ103F51
     K21H03W  C2021 04 08.45873113 37 41.465+04 04 43.51         21.76GVEJ103F51
     K21H03W  C2021 04 11.41351913 36 41.973+05 51 23.48         21.72GVEJ103F51
     K21H03W  C2021 04 12.43749813 36 19.080+06 29 24.71         21.90GVEJ103F52
     K21H03W* C2021 04 16.42010 13 34 43.209+09 01 28.20         21.5 wUEJ103F51
     K21H03W  C2021 04 16.44943 13 34 42.244+09 02 36.58         21.9 wUEJ103F51
     K21H03W  C2021 04 16.46415 13 34 41.793+09 03 10.45         21.5 wUEJ103F51
     K21H03W  C2021 04 17.31136513 34 21.089+09 36 13.38         21.47GVEJ103F51
     K21H03W  C2021 04 17.32383413 34 20.717+09 36 42.58         21.66GVEJ103F51
     K21H03W  C2021 04 17.33633213 34 20.334+09 37 12.13         21.67GVEJ103F51
     K21H03W  C2021 04 17.34883013 34 19.939+09 37 41.52         21.88GVEJ103F51
     K21H03W  C2021 04 30.29577113 28 54.227+18 09 02.75         21.69GVEJ103F51
     K21H03W  C2021 04 30.30931613 28 53.861+18 09 34.34         21.85GVEJ103F51
     K21H03W  C2021 04 30.32287413 28 53.477+18 10 06.02         21.84GVEJ103F51
     K21H03W  C2021 05 06.29971 13 27 06.38 +21 53 10.2          22.1 GVEJ103G96
     K21H03W  C2021 05 06.30487 13 27 06.35 +21 53 21.1          21.6 GVEJ103G96
     K21H03W  C2021 05 06.31002 13 27 06.19 +21 53 32.9          21.8 GVEJ103G96
     K21H03W  C2021 05 06.31517 13 27 06.15 +21 53 43.1          22.1 GVEJ103G96
     K21H03W  C2021 05 08.44832313 26 42.015+23 08 57.69         21.90wUEJ103F51
     K21H03W  C2021 05 08.47802013 26 41.545+23 09 58.54         22.16wUEJ103F51
     K21H03W  C2021 05 08.49294713 26 41.326+23 10 28.97         22.13wUEJ103F51

Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A.
    Schultz, I. Smith, M. Willman.  Measurers S. Chastel, M. Huber, Y.
    Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers, T. de Boer, L. Denneau,
    J. Fairlamb, H. Flewelling, C.-C. Lin, E. Magnier.  1.8-m Ritchey-Chretien
    + CCD.
F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Dukes, T.
    Lowe, A. Schultz, I. Smith.  Measurers S. Chastel, M. Huber, Y.
    Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey.  Observer H. Groeller.  Measurers B. Gray, D. Rankin,
    F. C. Shelly.  1.5-m reflector + 10K CCD.

Orbital elements:
2021 HW3                                                 Earth MOID = 0.3256 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres                   
M 309.52382              (2000.0)            P               Q                  
n   0.24289416     Peri.   93.18282     +0.10973539     +0.99382420             
a   2.5440443      Node   183.25781     -0.98756557     +0.10713654             
e   0.5512445      Incl.   16.85770     -0.11257174     +0.02890006             
P   4.06           H   21.73          G   0.15           U   7                  
Residuals in seconds of arc
210408 F51  0.0   0.3+    210417 F51  0.2-  0.1+    210506 G96  0.7-  0.3+
210408 F51  0.0   0.2-    210417 F51  0.0   0.1-    210506 G96  0.3+  0.2+
210411 F51  0.1-  0.0     210417 F51  0.1+  0.1-    210506 G96  0.5-  1.0+
210412 F52  0.3-  0.0     210417 F51  0.0   0.1-    210506 G96  0.3+  0.2+
210416 F51  0.2+  0.2+    210430 F51  0.1-  0.0     210508 F51  0.0   0.0
210416 F51  0.2-  0.1+    210430 F51  0.1+  0.0     210508 F51  0.0   0.1-
210416 F51  0.1+  0.3-    210430 F51  0.2+  0.1+    210508 F51  0.0   0.2-

Ephemeris:
2021 HW3                 a,e,i = 2.54, 0.55, 17                  q = 1.1417
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 04 08    13 37 49.9 +03 48 39   0.5784  1.5696   166.6     8.5    22.1
...
2021 04 23    13 31 51.3 +13 21 34   0.4989  1.4679   153.1    18.0    22.0
...
2021 05 01    13 28 38.6 +18 36 07   0.4754  1.4160   142.9    25.4    22.0
...
2021 05 07    13 26 58.0 +22 18 11   0.4645  1.3786   135.3    31.0    22.1
2021 05 08    13 26 47.0 +22 53 22   0.4632  1.3725   134.1    31.9    22.1
2021 05 09    13 26 37.9 +23 27 56   0.4619  1.3665   132.9    32.8    22.1
...
2021 05 15    13 26 31.3 +26 41 25   0.4567  1.3313   125.9    37.9    22.2
...
2021 05 23    13 28 57.0 +30 18 44   0.4537  1.2876   117.7    44.1    22.3
...
2021 06 07    13 43 01.3 +35 00 54   0.4516  1.2177   105.8    53.3    22.4

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-J103




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