[Iaude] MPEC X112: 2021 XN2 [a=1.79,e=0.45,i=6.7,H=27.1]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sun Dec 5 00:24:49 EST 2021


M.P.E.C. 2021-X112                             Issued 2021 December 5, 05:23 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 XN2                                    


Observations:
     K21X02N* C2021 12 04.25760701 09 48.39 +25 57 02.7          19.96GVEX112703
     K21X02N  C2021 12 04.26285401 09 54.42 +25 55 54.7          19.95GVEX112703
     K21X02N  C2021 12 04.26810701 10 00.63 +25 54 46.5          19.95GVEX112703
     K21X02N  C2021 12 04.27335501 10 06.70 +25 53 37.1          19.25GVEX112703
     K21X02N  C2021 12 04.30548501 10 44.81 +25 46 04.3          19.4 GVEX112H01
     K21X02N  C2021 12 04.30983401 10 50.24 +25 45 05.2          19.4 GVEX112H01
     K21X02N  C2021 12 04.31884701 11 01.59 +25 43 02.1          19.2 GVEX112H01
     K21X02N  C2021 12 04.32808601 11 13.39 +25 40 54.8          19.6 GVEX112H01
     K21X02N KC2021 12 04.36846601 12 06.65 +25 31 54.1          19.67GVEX112G96
     K21X02N KC2021 12 04.36919801 12 07.64 +25 31 43.6          19.61GVEX112G96
     K21X02N KC2021 12 04.74558401 22 41.84 +23 59 31.8          18.8 GVEX112J95
     K21X02N KC2021 12 04.74812801 22 45.83 +23 58 51.9          19.6 GVEX112J95
     K21X02N KC2021 12 04.75026901 22 49.14 +23 58 18.5          19.6 GVEX112J95
     K21X02N  C2021 12 04.75606801 22 13.18 +23 59 35.9          19.5 rVEX112N51
     K21X02N KC2021 12 04.75707801 22 59.68 +23 56 31.2          19.2 GVEX112J95
     K21X02N  C2021 12 04.76217101 22 22.45 +23 57 48.8          19.5 rVEX112N51
     K21X02N KC2021 12 04.97958801 29 22.14 +23 04 56.1          18.9 GXEX112Y00
     K21X02N KC2021 12 04.98464601 29 30.36 +23 03 21.0          19.1 GXEX112Y00
     K21X02N KC2021 12 04.98962801 29 38.34 +23 01 47.0          19.5 GXEX112Y00
     K21X02N KC2021 12 05.04889001 31 48.51 +22 31 14.2          18.9 VuEX112H21
     K21X02N KC2021 12 05.05064601 31 51.57 +22 30 40.1          19.0 VuEX112H21
     K21X02N KC2021 12 05.05240201 31 54.64 +22 30 06.0          19.0 VuEX112H21

Observer details:
703 Catalina Sky Survey.  Observer D. C. Fuls.  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.  0.68-m Schmidt + 10K CCD.
G96 Mt. Lemmon Survey.  Observer K. W. Wierzchos.  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.
H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
    Measurer W. H. Ryan.  2.4-m f/8.9 Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers T. Linder, R. Holmes, L. Horn.  0.76-m f/3.0 astrograph + CCD.
J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3 Schmidt-Cassegrain
    + CCD.
N51 GROWTH India Telescope, IAO, Hanle.  Observers V. Swain, K. Sharma, H.
    Kumar, R. Norboo, V. Bhalerao, G. C. Anupama, S. Barway.  Measurers V.
    Swain, K. Sharma.  0.70-m f/6.5 Corrected Dall-Kirkham + CCD.
Y00 SONEAR Observatory, Oliveira.  Observer C. Jacques.  0.45-m f/2.9
    reflector + CCD.

Orbital elements:
2021 XN2                                                 Earth MOID = 0.0063 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
M  13.16133              (2000.0)            P               Q                  
n   0.41045754     Peri.  196.92202     -0.00490214     -0.99362547             
a   1.7931800      Node   253.46957     +0.93053649     +0.03670784             
e   0.4538871      Incl.    6.74673     +0.36616636     -0.10658784             
P   2.40           H   27.16          G   0.15           U   7                  
Residuals in seconds of arc
211204 703  0.5+  0.1+    211204 G96  0.1-  0.1+    211204 Y00  0.3+  0.3+
211204 703  0.3-  0.1+    211204 G96  0.1-  0.0     211204 Y00  1.2+  0.0
211204 703  0.6+  0.3+    211204 J95  0.2-  0.0     211204 Y00  0.2+  0.0
211204 703  0.8-  0.3-    211204 J95  0.4+  0.0     211205 H21  0.4-  0.0
211204 H01  0.1+  0.1-    211204 J95  0.2+  0.2+    211205 H21  0.1-  0.2-
211204 H01  0.0   0.1-    211204 N51  0.7+  0.7+    211205 H21  0.0   0.1-
211204 H01  0.0   0.0     211204 J95  0.2-  0.2+
211204 H01  0.0   0.1-    211204 N51  0.9+  0.4-

Ephemeris:
2021 XN2                 a,e,i = 1.79, 0.45, 7                   q = 0.9793
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 05    00 07 52.9 +35 33 56   0.1411  1.1043   140.6    34.7    24.6
...
2021 11 20    00 02 44.6 +34 55 38   0.07554 1.0381   129.7    47.0    23.4
...
2021 11 28    00 14 46.1 +33 16 05   0.04155 1.0116   126.0    52.1    22.2
...
2021 12 04    01 04 43.6 +26 47 12   0.01662 0.9967   131.0    48.3    20.1
2021 12 05    01 29 58.9 +22 50 50   0.01273 0.9946   135.1    44.3    19.4
2021 12 06    02 12 34.5 +15 07 25   0.0091890.9927   142.2    37.4    18.5
...
2021 12 12    10 10 03.1 -40 42 09   0.01957 0.9837    86.7    92.2    21.9
...
2021 12 20    11 08 46.5 -38 14 29   0.05269 0.9793    83.5    93.4    24.0
...
2022 01 04    11 27 50.0 -37 11 57   0.1124  0.9949    92.7    80.8    25.2

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X112




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