[Iaude] MPEC X231: 2021 XK6 [a=1.46,e=0.31,i=21.0,H=22.7]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Wed Dec 15 14:20:39 EST 2021


M.P.E.C. 2021-X231                            Issued 2021 December 15, 19:19 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 XK6                                    


Observations:
     K21X06K* C2021 12 14.57629612 18 39.89 +78 25 21.4          18.04oVEX231T08
     K21X06K  C2021 12 14.57953612 18 25.62 +78 24 54.4          18.20oVEX231T08
     K21X06K  C2021 12 14.58508412 18 01.21 +78 24 08.4          18.14oVEX231T08
     K21X06K  C2021 12 14.59517412 17 16.11 +78 22 43.5          18.12oVEX231T08
     K21X06K  C2021 12 14.68568412 11 12.13 +78 06 32.6          18.2 GVEX231900
     K21X06K  C2021 12 14.69181612 10 46.45 +78 05 38.1          18.1 GVEX231900
     K21X06K  C2021 12 14.69794812 10 20.70 +78 04 43.7          18.1 GVEX231900
     K21X06K  C2021 12 14.70380 12 09 57.39 +78 03 45.8          18.1 RrEX231P93
     K21X06K  C2021 12 14.70408112 09 54.77 +78 03 47.6          17.8 GVEX231900
     K21X06K  C2021 12 14.70593 12 09 48.41 +78 03 26.9          18.2 RrEX231P93
     K21X06K  C2021 12 14.70702 12 09 43.85 +78 03 17.1          18.2 RrEX231P93
     K21X06K KC2021 12 14.70927112 08 31.40 +77 59 45.9          18.1 G EX231C95
     K21X06K KC2021 12 14.71291112 08 17.73 +77 59 09.2          17.4 G EX231C95
     K21X06K KC2021 12 14.71653412 08 03.90 +77 58 31.1          17.4 G EX231C95
     K21X06K KC2021 12 14.71989612 07 51.48 +77 57 56.3          16.8 G EX231C95
     K21X06K KC2021 12 14.72299812 07 39.24 +77 57 24.0          16.6 G EX231C95
     K21X06K KC2021 12 14.83274612 00 44.59 +77 38 13.4          18.9 GVEX231Z33
     K21X06K KC2021 12 14.85627111 59 17.98 +77 34 06.7          18.6 GVEX231Z33
     K21X06K KC2021 12 14.86141511 58 58.62 +77 33 13.5          18.5 GVEX231Z33
     K21X06K KC2021 12 14.86655811 58 39.87 +77 32 19.5                VEX231Z33
     K21X06K KC2021 12 14.86755811 58 31.52 +77 32 31.1          17.9 GVEX231Z80
     K21X06K KC2021 12 14.87235111 58 13.41 +77 31 40.1          17.7 GVEX231Z80
     K21X06K KC2021 12 14.87733911 57 54.84 +77 30 47.2                VEX231Z80
     K21X06K KC2021 12 14.91365911 55 47.12 +77 24 43.7          18.0 GXEX231595
     K21X06K IC2021 12 14.91799111 55 30.23 +77 23 57.3                XEX231595
     K21X06K KC2021 12 14.92171 11 55 14.67 +77 22 42.1          18.6 GXEX231J57
     K21X06K KC2021 12 14.92214411 55 14.58 +77 23 13.9          18.0 GXEX231595
     K21X06K KC2021 12 14.92843811 54 50.99 +77 22 07.6          18.4 GVEX231L01
     K21X06K KC2021 12 14.92869 11 54 48.60 +77 21 28.6          18.4 GXEX231J57
     K21X06K KC2021 12 14.93050911 54 42.96 +77 21 45.5          18.4 GVEX231L01
     K21X06K KC2021 12 14.93154711 54 39.04 +77 21 34.6          18.3 GVEX231L01
     K21X06K KC2021 12 14.93258511 54 35.06 +77 21 23.7          18.3 GVEX231L01
     K21X06K KC2021 12 14.93388011 54 29.99 +77 21 10.0          18.3 GVEX231L01
     K21X06K KC2021 12 14.93551 11 54 23.02 +77 20 15.8          18.4 GXEX231J57
     K21X06K KC2021 12 15.05195011 46 47.85 +76 58 51.0          18.6 GVEX231Z99
     K21X06K KC2021 12 15.05509111 46 35.68 +76 58 14.8          18.9 GVEX231Z99
     K21X06K KC2021 12 15.05828311 46 23.44 +76 57 37.8          18.8 GVEX231Z99
     K21X06K KC2021 12 15.06112411 46 12.35 +76 57 05.2          18.5 GVEX231Z99
     K21X06K  C2021 12 15.51938 11 18 50.94 +75 08 01.0          17.1 RrEX231P93
     K21X06K  C2021 12 15.52021 11 18 48.28 +75 07 48.6          17.3 RrEX231P93
     K21X06K  C2021 12 15.52105 11 18 45.54 +75 07 36.3          17.1 RrEX231P93
     K21X06K  C2021 12 15.52194 11 18 42.70 +75 07 23.0          17.2 RrEX231P93
     K21X06K  C2021 12 15.57103611 16 04.05 +74 55 18.4          17.6 GVEX231900
     K21X06K  C2021 12 15.57471411 15 51.99 +74 54 23.0          17.3 GVEX231900
     K21X06K  C2021 12 15.57839111 15 40.18 +74 53 27.5          17.8 GVEX231900
     K21X06K KC2021 12 15.77146211 04 39.74 +73 56 50.6          17.6 GXEX231958
     K21X06K KC2021 12 15.77536411 04 28.53 +73 55 42.7          18.0 GXEX231958
     K21X06K KC2021 12 15.77918511 04 17.49 +73 54 35.5          17.8 GXEX231958

Observer details:
595 Farra d'Isonzo.  Observer E. Pettarin.  0.40-m f/5.15 reflector + CCD.
900 Moriyama.  Observer Y. Ikari.  0.26-m f/7.0 reflector + CCD.
958 Observatoire de Dax.  Observers P. Dupouy, J. B. de Vanssay.  Measurer P.
    Dupouy.  0.43-m f/2.7 reflector + CCD.
C95 SATINO Remote Observatory, Haute Provence.  Observer J. Jahn.  0.60-m
    f/3.2 Newtonian reflector + CCD.
J57 Centro Astronomico Alto Turia, Valencia.  Observer A. Fornas.  Measurers
    A. Fornas, G. Fornas, E. Arce, V. Mas.  0.43-m f/6.8 reflector + CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.
P93 Space Tracking and Communications Center, JAXA.  Observers T. Fujiwara, M.
    Hagino.  1.0-m f/3.0 reflector + CCD.
T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, R. Siverd, J. Tonry, H.
    Weiland.  Measurers L. Denneau, N. Erasmus, A. Fitzsimmons, A. Lawrence,
    J. Robinson, R. Siverd, J. Tonry, H. Weiland.  0.5-m reflector + CCD.
Z33 6ROADS Observatory 2, Nerpio.  Observers R. Reszelewski, M. Zolnowski, M.
    Gedek, K. Zukowski, T. Santana-Ros.  Measurer R. Reszelewski.  0.4-m f/8
    reflector + CCD.
Z80 Northolt Branch Observatory.  Observer G. Wells.  Measurers G. Wells, D.
    Bamberger.  0.25-m f/8.0 Ritchey-Chretien + CCD.
Z99 Clixby Observatory, Cleethorpes.  Observer A. Mickleburgh.  0.36-m f/8
    Schmidt-Cassegrain + CCD.

Orbital elements:
2021 XK6                                                 Earth MOID = 0.0168 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
M  18.63416              (2000.0)            P               Q                  
n   0.56151684     Peri.  178.16790     +0.04170757     -0.93288466             
a   1.4551045      Node   269.32038     +0.91207372     +0.18173039             
e   0.3125876      Incl.   20.96376     +0.40789952     -0.31096668             
P   1.76           H   22.75          G   0.15           U   8                  
Residuals in seconds of arc
211214 T08  0.5-  0.3+    211214 Z33  0.1-  0.0     211214 L01  0.4-  0.0
211214 T08  0.1-  0.1+    211214 Z33  0.4+  0.5-    211214 J57  0.1-  0.5-
211214 T08  0.6+  0.2+    211214 Z33  0.8-  0.2+    211215 Z99  0.0   0.1-
211214 T08  0.0   0.1+    211214 Z33  0.0   0.1+    211215 Z99  0.0   0.0
211214 900  0.2-  0.5-    211214 Z80  0.2-  0.4+    211215 Z99  0.5+  0.1-
211214 900  0.4-  0.7-    211214 Z80  0.6-  0.1+    211215 Z99  0.2+  0.3+
211214 900  0.5-  0.5-    211214 Z80  0.0   0.0     211215 P93  0.2+  0.1+
211214 P93  0.6+  0.1-    211214 595  0.6+  0.5+    211215 P93  0.2+  0.0
211214 900  1.0-  1.6-    211214 595  0.6-  0.3-    211215 P93  0.1+  0.1+
211214 P93  0.4+  0.1+    211214 J57  0.3-  0.6-    211215 P93  0.1+  0.0
211214 P93  0.5+  0.2+    211214 595  0.1+  0.1+    211215 900  0.8-  0.7-
211214 C95  0.3-  0.2-    211214 L01  0.1+  0.0     211215 900  0.9-  0.9-
211214 C95  0.1+  0.6+    211214 J57  0.1-  0.1-    211215 900  0.0   1.2-
211214 C95  0.2-  0.2-    211214 L01  0.2-  0.2-    211215 958  0.5-  0.4+
211214 C95  0.7+  0.4-    211214 L01  0.1-  0.2-    211215 958  0.1-  0.7+
211214 C95  0.9-  0.7-    211214 L01  0.1-  0.1-    211215 958  0.0   0.3+

Ephemeris:
2021 XK6                 a,e,i = 1.46, 0.31, 21                  q = 1.0003
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 15    19 11 07.5 +72 07 43   0.2378  1.0503    98.3    68.7    22.2
...
2021 11 30    18 31 09.0 +74 17 45   0.1427  1.0162    98.1    73.9    21.1
...
2021 12 08    17 25 11.2 +78 00 23   0.08897 1.0055   100.8    74.2    20.1
...
2021 12 14    12 59 28.8 +79 35 16   0.04929 1.0013   108.7    68.6    18.6
2021 12 15    11 49 34.9 +77 09 34   0.04310 1.0009   111.5    66.2    18.3
2021 12 16    10 52 56.6 +72 49 21   0.03721 1.0006   115.2    62.9    17.8
...
2021 12 22    08 36 53.4 -07 27 30   0.02574 1.0007   130.8    48.1    16.6
...
2021 12 30    07 55 21.5 -48 35 41   0.07299 1.0060   106.0    70.0    19.5
...
2022 01 14    07 31 29.6 -57 29 41   0.1732  1.0310   101.1    69.4    21.4

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X231




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