[Iaude] MPEC J73: 2021 HQ3 [a=2.19,e=0.55,i=7.3,H=22.4]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Thu May 6 02:46:00 EDT 2021


M.P.E.C. 2021-J73                                   Issued 2021 May 6, 06:44 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 HQ3                                    


Observations:
     K21H03Q* C2021 04 19.35717814 26 45.96 +15 57 38.3          22.69GVEJ073G96
     K21H03Q  C2021 04 19.36295414 26 45.95 +15 57 50.9          21.51GVEJ073G96
     K21H03Q  C2021 04 19.36878514 26 45.99 +15 58 02.2          21.67GVEJ073G96
     K21H03Q  C2021 04 19.37458114 26 46.06 +15 58 15.1          21.48GVEJ073G96
     K21H03Q  C2021 05 05.33123314 31 41.80 +26 44 05.1          20.75GVEJ073G96
     K21H03Q  C2021 05 05.33642314 31 41.87 +26 44 19.2          20.82GVEJ073G96
     K21H03Q  C2021 05 05.34162914 31 41.91 +26 44 33.7          20.85GVEJ073G96
     K21H03Q  C2021 05 05.34683414 31 41.99 +26 44 47.7          21.14GVEJ073G96
     K21H03Q KC2021 05 05.42001514 31 43.01 +26 48 05.9          20.93GVEJ073I52
     K21H03Q KC2021 05 05.42169514 31 43.02 +26 48 11.0          20.80GVEJ073I52
     K21H03Q KC2021 05 05.42337714 31 43.07 +26 48 15.2          20.99GVEJ073I52
     K21H03Q KC2021 05 06.16661114 32 05.63 +27 22 36.3          20.7 VuEJ073H21
     K21H03Q KC2021 05 06.17319514 32 05.76 +27 22 55.4          20.8 VuEJ073H21
     K21H03Q KC2021 05 06.19338614 32 06.92 +27 23 52.5                VEJ073I52
     K21H03Q KC2021 05 06.19590514 32 06.98 +27 24 00.6          21.06GVEJ073I52
     K21H03Q KC2021 05 06.19842514 32 07.05 +27 24 08.4          20.90GVEJ073I52
     K21H03Q KC2021 05 06.20094414 32 07.06 +27 24 14.8          20.31GVEJ073I52

Observer details:
G96 Mt. Lemmon Survey.  Observers K. W. Wierzchos, D. Rankin.  Measurers E. J.
    Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H.
    Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D.
    Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.5-m reflector +
    10K CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.76-m f/3.0
    astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observers T. A. Pruyne, G. J.
    Leonard.  Measurers E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R.
    Gibbs, A. D. Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J.
    Leonard, T. A. Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W.
    Wierzchos.  1.0-m reflector + CCD.

Orbital elements:
2021 HQ3                                                 Earth MOID = 0.0253 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Bell                    
M 301.14554              (2000.0)            P               Q                  
n   0.30455970     Peri.  144.55660     +0.18198641     +0.97925823             
a   2.1878679      Node   135.73609     -0.92904048     +0.20091307             
e   0.5458348      Incl.    7.33211     -0.32212534     -0.02621553             
P   3.24           H   22.48          G   0.15           U   9                  
Residuals in seconds of arc
210419 G96  0.4+  0.0     210505 G96  0.2-  0.2+    210506 H21  0.2+  0.9+
210419 G96  0.3-  0.4+    210505 G96  0.1+  0.1-    210506 I52  0.3-  1.0-
210419 G96  0.3-  0.6-    210505 I52  0.1-  0.1-    210506 I52  0.1-  0.1-
210419 G96  0.1+  0.1+    210505 I52  0.3-  0.5+    210506 I52  0.4+  0.5+
210505 G96  0.0   0.0     210505 I52  0.0   0.1+    210506 I52  0.0   0.2-
210505 G96  0.2+  0.1-    210506 H21  0.2-  0.4+

Ephemeris:
2021 HQ3                 a,e,i = 2.19, 0.55, 7                   q = 0.9937
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 04 06    14 22 09.6 +09 05 48   0.4330  1.4033   154.2    18.0    22.3
...
2021 04 21    14 27 12.8 +16 56 29   0.3213  1.2936   150.2    22.7    21.7
...
2021 04 29    14 29 25.6 +22 07 34   0.2739  1.2379   143.5    28.9    21.4
...
2021 05 05    14 31 33.8 +26 28 57   0.2428  1.1980   137.2    34.9    21.2
2021 05 06    14 32 00.2 +27 14 58   0.2379  1.1915   136.0    36.0    21.2
2021 05 07    14 32 28.7 +28 01 43   0.2331  1.1851   134.9    37.1    21.2
...
2021 05 13    14 36 18.1 +32 58 51   0.2061  1.1481   127.7    44.1    21.0
...
2021 05 21    14 45 53.1 +40 30 58   0.1738  1.1031   117.5    54.5    20.9
...
2021 06 05    15 46 38.2 +59 41 09   0.1231  1.0363    96.7    76.5    20.7

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-J73




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