[Iaude] MPEC L01: 2021 KR2 [a=2.26,e=0.69,i=4.1,H=23.5]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Mon May 31 20:04:23 EDT 2021


M.P.E.C. 2021-L01                                  Issued 2021 June 1, 00:02 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 KR2                                    


Observations:
     K21K02R  C2021 05 10.40109115 30 54.329-05 17 34.37         22.97GVEL001F51
     K21K02R  C2021 05 10.41310315 30 53.036-05 17 19.83         22.79GVEL001F51
     K21K02R  C2021 05 10.42508815 30 51.735-05 17 05.79         22.84GVEL001F51
     K21K02R  C2021 05 10.43707615 30 50.426-05 16 51.34         22.90GVEL001F51
     K21K02R  C2021 05 10.46245415 30 47.704-05 16 21.53         23.40GVEL001F51
     K21K02R* C2021 05 30.26836014 26 53.772+05 33 32.95         20.96wUEL001F51
     K21K02R  C2021 05 30.28019714 26 49.529+05 34 11.12         21.25GVEL001F51
     K21K02R  C2021 05 30.29200914 26 45.257+05 34 48.54         21.39wUEL001F51
     K21K02R  C2021 05 30.30388414 26 40.958+05 35 26.67         20.97GVEL001F51
     K21K02R KC2021 05 31.17192014 21 32.08 +06 22 51.9          21.07GVEL001I52
     K21K02R KC2021 05 31.17527614 21 30.77 +06 23 03.7          21.47GVEL001I52
     K21K02R KC2021 05 31.17863114 21 29.51 +06 23 14.0          21.17GVEL001I52
     K21K02R pC2021 05 31.92595014 16 45.73 +07 06 05.7          21.3 GVEL001L01
     K21K02R pC2021 05 31.92963614 16 44.26 +07 06 18.3          21.2 GVEL001L01
     K21K02R pC2021 05 31.93308114 16 42.87 +07 06 31.1          21.3 GVEL001L01

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.
I52 Steward Observatory, Mt. Lemmon Station.  Observer 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.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.

Orbital elements:
2021 KR2                                                 Earth MOID = 0.0428 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres                   
M 295.17796              (2000.0)            P               Q                  
n   0.28932328     Peri.  219.37967     +0.88050326     +0.46938414             
a   2.2640211      Node   112.50655     -0.41480853     +0.83058978             
e   0.6889168      Incl.    4.11395     -0.22945130     +0.29966507             
P   3.41           H   23.52          G   0.15           U   8                  
Residuals in seconds of arc
210510 F51  0.0   0.0     210530 F51  0.1-  0.2+    210531 I52  0.2-  0.5+
210510 F51  0.0   0.2+    210530 F51  0.1+  0.3+    210531 I52  0.2+  0.5-
210510 F51  0.0   0.0     210530 F51  0.0   0.1-    210531 L01  0.1-  0.0
210510 F51  0.2-  0.2+    210530 F51  0.1-  0.1-    210531 L01  0.0   0.3-
210510 F51  0.3+  0.3-    210531 I52  0.1+  0.0     210531 L01  0.0   0.3+

Ephemeris:
2021 KR2                 a,e,i = 2.26, 0.69, 4                   q = 0.7043
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 05 02    15 41 31.0 -07 38 55   0.4795  1.4718   162.3    12.0    23.5
...
2021 05 17    15 17 28.6 -02 46 05   0.3118  1.3126   163.0    13.0    22.3
...
2021 05 25    14 52 10.3 +01 32 10   0.2375  1.2261   151.1    23.6    22.0
...
2021 05 31    14 22 34.4 +06 13 33   0.1891  1.1609   137.8    35.9    21.7
2021 06 01    14 16 18.1 +07 10 55   0.1818  1.1500   135.1    38.5    21.7
2021 06 02    14 09 32.5 +08 11 52   0.1746  1.1392   132.4    41.1    21.6
...
2021 06 08    13 15 26.2 +15 42 11   0.1376  1.0744   112.1    61.1    21.6
...
2021 06 16    11 08 44.1 +27 47 23   0.1122  0.9897    73.4   100.4    22.4
...
2021 07 01    06 57 49.0 +27 41 00   0.1738  0.8441     6.1   172.6

                      (Last issue was M.P.E.C. 2021-K106)                       

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-L01




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