[Iaude] MPEC K100: 2021 KN2 [a=1.39,e=0.37,i=2.9,H=28.6]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sun May 30 20:10:20 EDT 2021


M.P.E.C. 2021-K100                                 Issued 2021 May 31, 00:08 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 KN2                                    


Observations:
     K21K02N  C2021 05 30.41779615 22 29.94 +05 39 18.0          17.59oVEK100T08
     K21K02N  C2021 05 30.42149015 22 24.08 +05 43 56.7          17.53oVEK100T08
     K21K02N  C2021 05 30.42673315 22 15.84 +05 50 28.6          17.53oVEK100T08
     K21K02N  C2021 05 30.45784215 21 24.47 +06 31 53.0          17.59oVEK100T08
     K21K02N* C2021 05 30.54802115 21 38.68 +08 45 26.0          17.9 GVEK100381
     K21K02N  C2021 05 30.54812515 21 38.51 +08 45 36.7          16.8 GVEK100381
     K21K02N  C2021 05 30.57288215 20 49.52 +09 33 09.0          17.3 GVEK100381
     K21K02N  C2021 05 30.57297515 20 49.33 +09 33 20.8          17.1 GVEK100381
     K21K02N  C2021 05 30.60086815 19 48.57 +10 31 56.0          17.1 GVEK100381
     K21K02N  C2021 05 30.60097215 19 48.31 +10 32 08.2          17.3 GVEK100381
     K21K02N  C2021 05 30.63169015 18 34.73 +11 43 37.7          16.9 GVEK100381
     K21K02N  C2021 05 30.63178215 18 34.45 +11 43 52.0          16.8 GVEK100381
     K21K02N  C2021 05 30.71437415 14 43.58 +15 43 32.1          17.3 VqEK100900
     K21K02N  C2021 05 30.71515515 14 41.09 +15 46 11.9          17.3 VqEK100900
     K21K02N  C2021 05 30.71593515 14 38.63 +15 48 51.5          17.7 VqEK100900
     K21K02N KC2021 05 30.79741 15 12 20.45 +21 21 58.2          16.3 GVEK100N82
     K21K02N KC2021 05 30.79914 15 12 12.50 +21 30 45.5          16.7 GVEK100N82
     K21K02N KC2021 05 30.80104 15 12 03.75 +21 40 30.9          16.5 GVEK100N82
     K21K02N KC2021 05 30.80771 15 16 21.24 +22 31 26.9          18.3 GXEK100L45
     K21K02N KC2021 05 30.81648 15 15 43.22 +23 21 11.4          16.4 GXEK100L45
     K21K02N KC2021 05 30.84024115 13 37.50 +25 35 58.7          15.9 GVEK100595
     K21K02N KC2021 05 30.84103615 13 33.31 +25 41 12.2          16.6 GVEK100595
     K21K02N KC2021 05 30.84261515 13 24.88 +25 51 38.2          16.0 GVEK100595
     K21K02N KC2021 05 30.86040215 11 42.40 +27 55 34.8          16.4 GVEK100595
     K21K02N KC2021 05 30.86119015 11 37.47 +28 01 21.5          16.1 GVEK100595
     K21K02N KC2021 05 30.86969 15 11 01.03 +28 58 58.8          16.3 GVEK100A17
     K21K02N KC2021 05 30.87006 15 10 58.61 +29 01 49.9          15.6 GVEK100A17
     K21K02N KC2021 05 30.87037 15 10 56.57 +29 04 14.8          16.5 GVEK100A17
     K21K02N KC2021 05 30.87222915 11 38.08 +29 24 37.0          16.3 GVEK100I93
     K21K02N KC2021 05 30.87339315 11 30.49 +29 33 48.3          16.4 GVEK100I93
     K21K02N KC2021 05 30.87770815 11 01.80 +30 08 21.5          16.5 GVEK100I93
     K21K02N KC2021 05 30.90919515 05 21.39 +34 47 40.3          16.3 GVEK100L01
     K21K02N KC2021 05 30.90990515 05 14.49 +34 54 31.4          16.2 GVEK100L01
     K21K02N KC2021 05 30.91054915 05 08.18 +35 00 46.4          16.1 GVEK100L01
     K21K02N KC2021 05 30.91119215 05 01.82 +35 07 02.3          16.1 GVEK100L01
     K21K02N NC2021 05 30.91184515 04 55.31 +35 13 25.5          16.2 GVEK100L01
     K21K02N KC2021 05 30.91201215 06 23.98 +35 03 00.5          16.2 GVEK100J95
     K21K02N KC2021 05 30.91393515 06 06.10 +35 22 01.2          16.2 GVEK100J95
     K21K02N KC2021 05 30.91419115 04 35.32 +35 26 15.2          15.8 GVEK100G34
     K21K02N KC2021 05 30.91450415 04 32.20 +35 29 21.2          15.8 GVEK100G34
     K21K02N KC2021 05 30.91463015 05 59.56 +35 28 56.9          16.3 GVEK100J95
     K21K02N KC2021 05 30.91481815 04 29.07 +35 32 27.8          15.8 GVEK100G34
     K21K02N KC2021 05 30.91544515 04 22.82 +35 38 42.1          15.8 GVEK100G34
     K21K02N KC2021 05 30.91583415 05 48.16 +35 41 00.2          16.1 GVEK100J95
     K21K02N KC2021 05 30.91584515 05 41.69 +35 41 04.9          16.2 GVEK100Z80
     K21K02N KC2021 05 30.91598215 05 44.87 +35 43 31.6          16.4 GVEK100J69
     K21K02N KC2021 05 30.91626215 05 42.19 +35 46 20.8          16.6 GVEK100J69
     K21K02N KC2021 05 30.91646615 05 42.06 +35 47 21.4          16.2 GVEK100J95
     K21K02N KC2021 05 30.91682215 05 36.70 +35 52 00.6          16.7 GVEK100J69
     K21K02N KC2021 05 30.91738315 05 31.27 +35 57 41.1          16.7 GVEK100J69
     K21K02N KC2021 05 30.91752915 05 25.40 +35 58 05.2          16.3 GVEK100Z80
     K21K02N KC2021 05 30.91794215 05 25.82 +36 03 21.6          16.5 GVEK100J69
     K21K02N KC2021 05 30.92074115 04 53.48 +36 30 58.2          16.1 GVEK100Z80
     K21K02N KC2021 05 30.92242515 04 36.26 +36 48 27.7          16.1 GVEK100Z80
     K21K02N hC2021 05 30.93149415 01 18.67 +38 36 57.9          16.0 GVEK100L01
     K21K02N hC2021 05 30.93160315 01 17.32 +38 38 09.3          15.8 GVEK100L01
     K21K02N hC2021 05 30.93171015 01 16.01 +38 39 19.1          15.9 GVEK100L01
     K21K02N KC2021 05 30.93739 14 59 40.13 +39 57 44.4          16.9 GXEK100L45
     K21K02N KC2021 05 30.94290 14 58 23.41 +41 01 07.4          15.9 GXEK100L45

Observer details:
381 Tokyo-Kiso.  Observers J. Beniyama, S. Sako.  1.05-m f/3.1 Schmidt + CCD.
595 Farra d'Isonzo.  Observer E. Pettarin.  0.61-m f/4.5 reflector + CCD.
900 Moriyama.  Observer Y. Ikari.  0.26-m f/7.0 reflector + CCD.
A17 Guidestar Observatory, Weinheim.  Observers M. Emmerich, S. Melchert.
    0.36-m f/6.0 Schmidt-Cassegrain + CCD.
G34 Oberfrauendorf.  Observer T. Felber.  0.35-m f/6.3 Schmidt-Cassegrain +
    CCD.
I93 St Pardon de Conques.  Observer F. Losse.  0.40-m f/3.7 reflector + CCD.
J69 North Observatory, Clanfield.  Observer D. Briggs.  0.41-m f/4.5 Newtonian
    reflector + CCD.
J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3 Schmidt-Cassegrain
    + CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.
L45 ObsCT, Catania.  Observer C. Arena.  0.2-m f/4.5 Newtonian reflector +
    CCD.
N82 Multa Observatory.  Observer L. Elenin.  0.4-m f/1.25 reflector + CCD.
T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, J. Tonry, A. Heinze, H.
    Weiland.  Measurers L. Denneau, J. Tonry, A. Heinze, H. Weiland, A.
    Fitzsimmons, J. Robinson, N. Erasmus.  0.5-m reflector + CCD.
Z80 Northolt Branch Observatory.  Observer G. Wells.  Measurers G. Wells, D.
    Bamberger.  0.25-m f/8.0 Ritchey-Chretien + CCD.

Orbital elements:
2021 KN2                                                 Earth MOID = 0.0012 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres                   
M 231.51172              (2000.0)            P               Q                  
n   0.60421902     Peri.  239.26978     +0.64089711     +0.76616957             
a   1.3857125      Node    70.66504     -0.68604336     +0.59932512             
e   0.3679194      Incl.    2.87186     -0.34437684     +0.23193443             
P   1.63           H   28.62          G   0.15           U   6                  
Residuals in seconds of arc
210530 T08  0.1+  0.3-    210530 595  0.0   1.1-    210530 J95  0.0   0.2-
210530 T08 (0.3-  1.5+)   210530 595  0.1-  0.7-    210530 G34 (0.6-  2.4+)
210530 T08 (1.7+  4.3-)   210530 595  0.7-  0.4-    210530 G34 (0.4-  2.6+)
210530 T08  0.1-  0.4+    210530 595  0.1+  0.7-    210530 J95  0.5+  0.4-
210530 381  0.6-  0.8+    210530 595  0.2-  0.6-    210530 Z80  0.1-  0.7-
210530 381  0.3-  0.2+    210530 A17  0.2+  0.3+    210530 J69  0.0   0.1+
210530 381  0.3+  1.0-    210530 A17  0.1-  0.2+    210530 J69 (0.6+  2.2-)
210530 381  0.3+  0.2-    210530 A17  0.1-  0.4+    210530 J95  0.1+  0.8-
210530 381  0.1-  1.8+    210530 I93  0.0   0.3+    210530 J69  0.7-  0.8+
210530 381  0.5-  0.2+    210530 I93  0.5-  0.9+    210530 J69  0.3-  0.5+
210530 381  0.0   0.5+    210530 I93  0.1+  0.2+    210530 Z80  0.3+  0.3-
210530 381  0.8-  1.4+    210530 L01  0.3-  1.4+    210530 J69  0.0   0.3+
210530 900  0.0   0.6-    210530 L01  0.1-  0.8+    210530 Z80  0.4+  0.2-
210530 900  0.1-  0.2-    210530 L01  0.0   0.9+    210530 Z80  0.2-  0.1+
210530 900  0.3+  0.2-    210530 L01  0.2-  1.2+    210530 L01  1.0+  3.3-
210530 N82  0.4+  0.1+    210530 L01  0.5-  1.4+    210530 L01  0.4-  2.1+
210530 N82  0.2-  0.5-    210530 J95  0.2+  0.6-    210530 L01  0.5-  1.6+
210530 N82  0.1+  0.0     210530 J95  0.1-  0.4-    210530 L45  0.0   1.1+
210530 L45  0.8-  1.4+    210530 G34 (0.4-  2.4+)   210530 L45  0.2-  0.5+
210530 L45  1.1-  1.1-    210530 G34 (0.6-  2.5+)

Ephemeris:
2021 KN2                 a,e,i = 1.39, 0.37, 3                   q = 0.8759
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 05 01    15 30 31.3 -09 39 33   0.1777  1.1800   164.9    12.9    26.0
...
2021 05 16    15 30 53.9 -08 35 00   0.08459 1.0944   169.6     9.6    24.1
...
2021 05 24    15 29 51.3 -07 32 53   0.03927 1.0505   164.6    14.8    22.5
...
2021 05 30    15 25 45.8 +00 18 53   0.0061401.0192   153.4    26.5    18.8
2021 05 31    14 46 56.0 +53 28 04   0.0010961.0141   101.4    78.6    16.6
2021 06 01    03 34 35.2 +16 37 33   0.0051291.0091    15.3   164.6    30.1
...
2021 06 07    03 30 09.3 +07 08 59   0.03825 0.9809    26.6   152.4    30.4
...
2021 06 15    03 31 49.2 +06 44 08   0.08329 0.9475    33.5   143.7    30.5
...
2021 06 30    03 41 17.2 +07 51 54   0.1724  0.9017    44.5   127.9    30.1

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-K100




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