• Processing (Info)

    • MPEC 2021-H20 : 2021 GJ13

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    M.P.E.C. 2021-H20                                Issued 2021 April 16, 21:56 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@CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                2021 GJ13                                


Observations:
     K21G13J* C2021 04 11.48596717 06 19.41 +41 18 51.6          21.98GVEH020V00
     K21G13J  C2021 04 11.49019717 06 18.98 +41 18 53.7          22.08GVEH020V00
     K21G13J  C2021 04 11.49441317 06 18.56 +41 18 56.2          21.84GVEH020V00
     K21G13J  C2021 04 11.49864117 06 18.14 +41 18 58.6          21.51GVEH020V00
     K21G13J KC2021 04 13.34059617 03 15.36 +41 34 50.6          22.82GVEH020V06
     K21G13J KC2021 04 13.34455517 03 14.95 +41 34 52.4          22.01GVEH020V06
     K21G13J KC2021 04 13.34851517 03 14.51 +41 34 54.7          21.61GVEH020V06
     K21G13J KC2021 04 13.35248217 03 14.09 +41 34 56.4          22.13GVEH020V06
     K21G13J KC2021 04 14.47705117 01 17.13 +41 43 39.7          22.40GVEH020V06
     K21G13J KC2021 04 14.48259917 01 16.54 +41 43 41.5          22.17GVEH020V06
     K21G13J KC2021 04 14.48814417 01 15.92 +41 43 44.4          21.99GVEH020V06
     K21G13J KC2021 04 14.49369217 01 15.28 +41 43 46.9          21.89GVEH020V06
     K21G13J KC2021 04 16.37250116 57 54.09 +41 56 31.1          22.4 VuEH020H21
     K21G13J KC2021 04 16.37858516 57 53.38 +41 56 33.3          22.2 VuEH020H21
     K21G13J KC2021 04 16.38162616 57 53.03 +41 56 34.8          22.7 VuEH020H21

Observer details:
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  1.3-m f/4.0
    astrograph + CCD.
V00 Kitt Peak-Bok.  Observer H. Groeller.  Measurers M. J. Brucker, E. J.
    Christensen, C. E. Woodward, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D.
    Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. S.
    McMillan, T. A. Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W.
    Wierzchos.  2.25-m reflector + CCD.
V06 Catalina Sky Survey-Kuiper.  Observer D. C. Fuls.  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.  1.55-m reflector +
    1K CCD.

Orbital elements:
2021 GJ13                                                Earth MOID = 0.1525 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Bell                    
M 355.22763              (2000.0)            P               Q                  
n   0.23433951     Peri.  345.58190     -0.46033162     -0.78863849             
a   2.6055877      Node   129.95614     +0.85804937     -0.51302632             
e   0.6855085      Incl.   32.12396     +0.22769734     +0.33890019             
P   4.21           H   20.00          G   0.15           U   8                  
Residuals in seconds of arc
210411 V00  0.1-  0.0     210413 V06  0.3+  0.3-    210414 V06  0.1-  0.2+
210411 V00  0.1-  0.2-    210413 V06  0.1+  0.1+    210414 V06  0.5-  0.3+
210411 V00  0.0   0.1+    210413 V06  0.0   0.3-    210416 H21  0.3+  0.2-
210411 V00  0.1+  0.1+    210414 V06  0.1-  0.3+    210416 H21  0.0   0.2-
210413 V06  0.2+  0.1-    210414 V06  0.1+  0.3-    210416 H21  0.0   0.1+

Ephemeris:
2021 GJ13                a,e,i = 2.61, 0.69, 32                  q = 0.8194
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 03 17    17 29 44.6 +34 49 35   0.7715  1.3037    94.3    49.6    21.9
...
2021 04 01    17 20 26.9 +39 13 14   0.8610  1.4540   102.6    42.1    22.1
...
2021 04 09    17 10 11.8 +40 54 15   0.9068  1.5338   106.9    38.7    22.3
...
2021 04 15    17 00 22.1 +41 47 24   0.9418  1.5931   109.9    36.3    22.4
2021 04 16    16 58 34.7 +41 54 09   0.9478  1.6029   110.4    35.9    22.4
2021 04 17    16 56 45.0 +42 00 16   0.9538  1.6128   110.9    35.5    22.4
...
2021 04 23    16 45 06.7 +42 23 13   0.9910  1.6713   113.7    33.4    22.5
...
2021 05 01    16 28 30.9 +42 15 51   1.0447  1.7484   116.8    30.9    22.6
...
2021 05 16    15 58 18.1 +40 08 09   1.1633  1.8892   120.5    27.5    22.9

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-H20

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