[Iaude] MPEC X30: 2021 XB [a=2.60,e=0.71,i=1.4,H=28.4]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Thu Dec 2 02:22:24 EST 2021


M.P.E.C. 2021-X30                              Issued 2021 December 2, 07:21 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 XB                                     


Observations:
     K21X00B*HC2021 12 01.24089303 23 27.46 +42 10 19.6          19.40GVEX030G96
     K21X00B HC2021 12 01.24871203 24 06.39 +42 06 37.5                VEX030G96
     K21X00B HC2021 12 01.25399403 24 32.59 +42 04 06.5                VEX030G96
     K21X00B HC2021 12 01.25934003 24 58.82 +42 01 34.9                VEX030G96
     K21X00B KC2021 12 01.30367403 28 29.26 +41 40 43.9          19.11GVEX030I52
     K21X00B KC2021 12 01.30445503 28 32.87 +41 40 21.2          19.97GVEX030I52
     K21X00B KC2021 12 01.30484703 28 34.66 +41 40 09.9          19.67GVEX030I52
     K21X00B KC2021 12 01.45935503 39 25.29 +40 30 13.6          20.13GVEX030I52
     K21X00B KC2021 12 01.46013903 39 28.34 +40 29 53.1          20.54GVEX030I52
     K21X00B KC2021 12 01.46092503 39 31.35 +40 29 32.1          20.16GVEX030I52
     K21X00B 1C2021 12 01.96735 04 05 00.11 +37 37 17.7          24.0 VVEX030033
     K21X00B 1C2021 12 01.96798 04 05 01.44 +37 37 06.9          24.4 VVEX030033
     K21X00B 1C2021 12 01.96861 04 05 02.74 +37 36 56.1          21.4 VVEX030033
     K21X00B 1C2021 12 01.96933 04 05 04.23 +37 36 44.1          21.3 VVEX030033
     K21X00B KC2021 12 02.02463604 07 01.27 +37 21 22.4          20.2 GVEX030J95
     K21X00B KC2021 12 02.03538004 07 22.40 +37 18 26.3          20.4 GVEX030J95
     K21X00B KC2021 12 02.04141004 07 34.20 +37 16 47.1          20.3 GVEX030J95
     K21X00B KC2021 12 02.11546804 10 30.29 +36 58 07.2          21.0 GXEX030858
     K21X00B KC2021 12 02.12222204 10 42.48 +36 56 31.1          20.5 GXEX030858
     K21X00B KC2021 12 02.12902904 10 54.79 +36 54 53.6          20.9 GXEX030858
     K21X00B KC2021 12 02.17013404 12 08.48 +36 45 21.4          21.21GVEX030I52
     K21X00B KC2021 12 02.17133104 12 10.46 +36 45 05.3                VEX030I52
     K21X00B KC2021 12 02.17192904 12 11.53 +36 44 56.2          20.80GVEX030I52
     K21X00B KC2021 12 02.23354904 13 42.71 +36 30 12.8          21.2 VuEX030H21
     K21X00B KC2021 12 02.23634804 13 47.10 +36 29 34.0          20.8 VuEX030H21
     K21X00B KC2021 12 02.24054704 13 53.70 +36 28 34.9          21.3 VuEX030H21

Observer details:
033 Karl Schwarzschild Observatory, Tautenburg.  Observers S. Melnikov, C.
    Hoegner, U. Laux, F. Ludwig, B. Stecklum.  Measurer B. Stecklum.  1.34-m
    f/3 Schmidt + CCD.
858 Tebbutt Observatory, Edgewood.  Observer F. B. Zoltowski.  0.51-m Schmidt-
    Cassegrain + CCD.
G96 Mt. Lemmon Survey.  Observer A. R. Gibbs.  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, D. Rankin, R. L. Seaman, F. C.
    Shelly, K. W. Wierzchos.  1.5-m reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers T. Linder, R. Holmes, L. Horn.  0.76-m f/3.0 astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer D. Rankin.  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, D. Rankin, R. L.
    Seaman, F. C. Shelly, K. W. Wierzchos.
J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3 Schmidt-Cassegrain
    + CCD.

Orbital elements:
2021 XB                                                  Earth MOID = 0.0052 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Bell                    
M  21.58226              (2000.0)            P               Q                  
n   0.23493333     Peri.  307.94350     +0.99894616     -0.04157982             
a   2.6011953      Node    54.44772     +0.04589294     +0.91074711             
e   0.7113906      Incl.    1.36875     -0.00063492     +0.41086594             
P   4.20           H   28.43          G   0.15           U   8                  
Residuals in seconds of arc
211201 G96  1.0+  0.8-    211201 I52  0.0   0.5-    211202 858  0.5-  0.0
211201 G96  0.4-  0.1+    211201 033  0.3+  0.2+    211202 858  0.2+  0.7-
211201 G96  0.3+  0.5-    211201 033  0.6+  0.0     211202 I52  0.1+  0.1-
211201 G96  0.0   0.0     211201 033  0.4+  0.1-    211202 I52  0.6-  0.5+
211201 I52  0.1-  0.9+    211201 033  0.2+  0.2+    211202 I52  0.1+  0.3-
211201 I52  0.0   0.1+    211202 J95  0.0   0.6-    211202 H21  0.5+  0.0
211201 I52  0.1-  0.3-    211202 J95  0.4-  0.3-    211202 H21  0.0   0.7+
211201 I52  0.3+  0.0     211202 J95  0.4-  0.8-    211202 H21  0.4-  0.8+
211201 I52  0.4+  0.1-    211202 858  0.4+  0.1-

Ephemeris:
2021 XB                  a,e,i = 2.60, 0.71, 1                   q = 0.7507
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 02    17 05 45.9 -24 37 51   0.3053  0.7759    38.2   127.7    30.8
...
2021 11 17    17 24 04.5 -23 52 25   0.1353  0.8707    27.2   148.7    32.0
...
2021 11 25    17 41 58.8 -20 23 05   0.05135 0.9402    23.3   155.4    31.5
...
2021 12 01    02 57 47.5 +44 12 02   0.01330 0.9978   150.9    28.8    20.3
2021 12 02    04 06 13.0 +37 29 57   0.02263 1.0077   163.4    16.2    21.1
2021 12 03    04 30 06.6 +34 08 57   0.03257 1.0177   167.8    11.8    21.7
...
2021 12 09    05 01 18.7 +28 46 23   0.09459 1.0791   174.0     5.5    23.9
...
2021 12 17    05 08 32.8 +27 17 14   0.1809  1.1636   172.3     6.5    25.5
...
2022 01 01    05 14 46.3 +26 19 41   0.3587  1.3251   159.4    15.2    27.7

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X30




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