[Iaude] MPEC X182: 2021 XY4 [a=1.85,e=0.60,i=7.8,H=23.5]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Fri Dec 10 08:46:27 EST 2021


M.P.E.C. 2021-X182                            Issued 2021 December 10, 13:45 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 XY4                                    


Observations:
     K21X04Y* C2021 12 09.28148700 54 39.09 +29 29 46.8          17.08oVEX182T08
     K21X04Y  C2021 12 09.28707400 55 04.37 +29 32 56.3          17.23oVEX182T08
     K21X04Y  C2021 12 09.29043400 55 19.59 +29 34 49.9          17.19oVEX182T08
     K21X04Y  C2021 12 09.30458100 56 23.48 +29 42 44.2          17.17oVEX182T08
     K21X04Y  C2021 12 09.42057 01 05 28.47 +30 43 20.1          17.4 RrEX182P93
     K21X04Y  C2021 12 09.42247 01 05 36.73 +30 44 18.7          17.4 RrEX182P93
     K21X04Y  C2021 12 09.42532 01 05 49.16 +30 45 46.3          17.7 RrEX182P93
     K21X04Y  C2021 12 09.60054801 18 14.62 +32 08 10.9          17.4 GVEX182900
     K21X04Y  C2021 12 09.60318201 18 25.60 +32 09 18.9          17.6 GVEX182900
     K21X04Y  C2021 12 09.60581601 18 36.60 +32 10 26.4          17.0 GVEX182900
     K21X04Y  C2021 12 09.60845001 18 47.60 +32 11 34.0          17.6 GVEX182900
     K21X04Y KC2021 12 09.77141201 30 25.59 +33 18 31.6          17.3 GZEX182C95
     K21X04Y KC2021 12 09.77746501 30 49.22 +33 20 52.1          17.0 GZEX182C95
     K21X04Y KC2021 12 09.78353601 31 12.87 +33 23 11.6          16.1 GZEX182C95
     K21X04Y KC2021 12 09.78961201 31 36.47 +33 25 31.1          16.9 GZEX182C95
     K21X04Y KC2021 12 09.79566601 31 59.94 +33 27 49.0          16.9 GZEX182C95
     K21X04Y KC2021 12 09.85876001 36 00.51 +33 50 41.8          16.6 GVEX182L06
     K21X04Y KC2021 12 09.85971901 36 04.13 +33 51 02.0          17.3 GVEX182L06
     K21X04Y KC2021 12 09.86078401 36 08.17 +33 51 24.7          17.4 GVEX182L06
     K21X04Y KC2021 12 09.86142201 36 10.59 +33 51 38.1          17.2 GVEX182L06
     K21X04Y KC2021 12 09.87699701 37 09.53 +33 57 05.1          17.3 GVEX182204
     K21X04Y KC2021 12 09.87957201 37 19.22 +33 57 58.5                VEX182204
     K21X04Y KC2021 12 09.88104 01 37 23.82 +33 58 38.9          17.5 GVEX182L39
     K21X04Y KC2021 12 09.88214701 37 28.93 +33 58 51.8                VEX182204
     K21X04Y KC2021 12 09.88272 01 37 30.18 +33 59 11.8          18.0 GVEX182L39
     K21X04Y KC2021 12 09.88440 01 37 36.54 +33 59 47.8          17.0 GVEX182L39
     K21X04Y KC2021 12 09.88478701 37 38.86 +33 59 46.4                VEX182204
     K21X04Y KC2021 12 09.88608 01 37 42.77 +34 00 22.2          17.4 GVEX182L39
     K21X04Y KC2021 12 09.88737201 37 48.58 +34 00 39.4                VEX182204
     K21X04Y KC2021 12 10.01683101 46 12.87 +34 43 37.3          17.6 VuEX182H21
     K21X04Y KC2021 12 10.01824001 46 17.91 +34 44 04.1          17.5 VuEX182H21
     K21X04Y KC2021 12 10.01964901 46 22.94 +34 44 30.8          17.4 VuEX182H21
     K21X04Y KC2021 12 10.02105801 46 27.97 +34 44 57.6          17.5 VuEX182H21
     K21X04Y KC2021 12 10.02246701 46 32.99 +34 45 24.2          17.5 VuEX182H21
     K21X04Y  C2021 12 10.54164702 15 08.31 +36 54 42.3          17.8 GVEX182900
     K21X04Y  C2021 12 10.54468502 15 17.14 +36 55 17.0          17.5 GVEX182900
     K21X04Y  C2021 12 10.54772202 15 25.91 +36 55 51.8          17.5 GVEX182900

Observer details:
204 Schiaparelli Observatory.  Observer L. Buzzi.  0.84-m f/3.5 reflector +
    CCD.
900 Moriyama.  Observer Y. Ikari.  0.26-m f/7.0 reflector + CCD.
C95 SATINO Remote Observatory, Haute Provence.  Observer J. Jahn.  0.60-m
    f/3.2 Newtonian reflector + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers T. Linder, R. Holmes, L. Horn.  0.76-m f/3.0 astrograph + CCD.
L06 Sormano 2 Observatory, Bellagio Via Lattea.  Observers E. Valli, G.
    Ventre.  Measurer P. Sicoli.  0.36-m Schmidt-Cassegrain + CCD.
L39 Osservatorio Spica, Signa.  Observer M. Bertini.  0.30-m Newtonian
    reflector + CCD.
P93 Space Tracking and Communications Center, JAXA.  Observers S. Urakawa, T.
    Fujiwara.  1.0-m f/3.0 reflector + CCD.
T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, J. Tonry, H. Weiland.
    Measurers L. Denneau, J. Tonry, H. Weiland, A. Fitzsimmons, J. Robinson,
    N. Erasmus.  0.5-m reflector + CCD.

Orbital elements:
2021 XY4                                                 Earth MOID = 0.0045 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
M  34.59619              (2000.0)            P               Q                  
n   0.39271340     Peri.  292.58259     +0.98801230     -0.08433684             
a   1.8467959      Node    72.44983     +0.13264903     +0.89224849             
e   0.5958246      Incl.    7.79415     -0.07896789     +0.44359883             
P   2.51           H   23.58          G   0.15           U   8                  
Residuals in seconds of arc
211209 T08  0.1+  0.1+    211209 C95  0.4+  0.6-    211209 204  0.2-  0.1-
211209 T08  0.2-  0.0     211209 C95  0.2+  0.3-    211209 L39  0.5-  0.0
211209 T08  0.2+  0.1+    211209 C95  0.1+  0.3-    211209 204  0.1-  0.3-
211209 T08  0.4+  0.3+    211209 L06  0.6+  0.1-    211210 H21  0.4+  0.1-
211209 P93  0.1+  0.3-    211209 L06  0.4+  0.2-    211210 H21  0.5+  0.1-
211209 P93  0.4-  0.3-    211209 L06  0.4+  0.0     211210 H21  0.4+  0.2-
211209 P93  0.6-  0.6-    211209 L06  0.5+  0.1-    211210 H21  0.5+  0.1-
211209 900  1.0+  0.6+    211209 204  0.2-  0.2-    211210 H21  0.4+  0.2-
211209 900  0.8+  0.6+    211209 204  0.5-  0.3-    211210 900  0.2-  0.1+
211209 900  0.9+  0.3+    211209 L39  0.5-  0.4+    211210 900  0.2+  0.0
211209 900  0.6+  0.1+    211209 204  0.2-  0.2-    211210 900  0.1-  0.1+
211209 C95  0.5+  0.1-    211209 L39 (0.4-  1.5-)
211209 C95  0.4+  0.0     211209 L39  0.5+  0.1+

Ephemeris:
2021 XY4                 a,e,i = 1.85, 0.60, 8                   q = 0.7464
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 10    17 30 01.2 -36 19 42   0.2868  0.7855    38.3   128.7    25.9
...
2021 11 25    18 05 52.0 -36 17 10   0.1285  0.8797    31.1   144.6    26.3
...
2021 12 03    19 08 03.2 -31 13 06   0.05164 0.9440    34.9   143.3    24.3
...
2021 12 09    00 31 51.5 +26 30 05   0.02224 0.9960   119.1    59.8    17.5
2021 12 10    01 44 58.1 +34 38 49   0.02821 1.0049   134.6    44.2    17.5
2021 12 11    02 36 12.8 +38 08 03   0.03587 1.0138   143.6    35.2    17.8
...
2021 12 17    04 23 21.6 +40 18 36   0.09112 1.0685   156.9    21.2    19.6
...
2021 12 25    04 54 59.5 +39 26 40   0.1711  1.1429   156.9    19.7    21.0
...
2022 01 09    05 16 48.2 +37 55 17   0.3356  1.2835   149.3    23.0    22.8

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X182




More information about the Iaude mailing list