[Iaude] MPEC X185: 2021 XD5 [a=1.46,e=0.51,i=9.3,H=26.2]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Fri Dec 10 17:28:28 EST 2021


M.P.E.C. 2021-X185                            Issued 2021 December 10, 22:27 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 XD5                                    


Observations:
     K21X05D* C2021 12 09.27021004 14 32.90 +20 56 34.7          19.99GVEX185G96
     K21X05D  C2021 12 09.27581104 14 34.87 +20 58 22.2          19.51GVEX185G96
     K21X05D  C2021 12 09.28143404 14 36.86 +21 00 11.1          19.63GVEX185G96
     K21X05D  C2021 12 09.28703404 14 38.81 +21 01 57.5                VEX185G96
     K21X05D mC2021 12 09.36728804 15 06.90 +21 26 41.3          19.58GVEX185I52
     K21X05D mC2021 12 09.36761604 15 07.01 +21 26 47.0          19.64GVEX185I52
     K21X05D mC2021 12 09.36794304 15 07.13 +21 26 53.3          19.88GVEX185I52
     K21X05D mC2021 12 09.36827004 15 07.25 +21 26 59.0          19.28GVEX185I52
     K21X05D KC2021 12 09.90237104 18 46.45 +23 49 59.9          19.9 GVEX185L06
     K21X05D KC2021 12 09.90267904 18 46.54 +23 50 04.2          19.8 GVEX185L06
     K21X05D KC2021 12 10.18740504 20 20.18 +24 53 56.2          18.8 VuEX185H21
     K21X05D KC2021 12 10.18964204 20 20.75 +24 54 24.6          19.1 VuEX185H21
     K21X05D KC2021 12 10.19243904 20 21.41 +24 54 59.5          19.0 VuEX185H21
     K21X05D KC2021 12 10.84767604 23 31.35 +26 54 22.5          20.3 GVEX185J95
     K21X05D KC2021 12 10.85926604 23 33.74 +26 56 16.9          19.6 GVEX185J95
     K21X05D KC2021 12 10.86723204 23 35.43 +26 57 34.5          20.1 GVEX185J95
     K21X05D KC2021 12 10.87562604 23 37.20 +26 58 56.6          19.9 GVEX185J95
     K21X05D KC2021 12 10.88294604 23 38.64 +27 00 07.6          19.9 GVEX185J95

Observer details:
G96 Mt. Lemmon Survey.  Observer R. A. Kowalski.  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 H. Groeller.  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.
L06 Sormano 2 Observatory, Bellagio Via Lattea.  Observers E. Valli, G.
    Ventre.  Measurer P. Sicoli.  0.36-m Schmidt-Cassegrain + CCD.

Orbital elements:
2021 XD5                                                 Earth MOID = 0.0107 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
M  54.06961              (2000.0)            P               Q                  
n   0.56007360     Peri.  277.08645     +0.98157767     +0.10833172             
a   1.4576032      Node    76.78544     -0.03139009     +0.90396566             
e   0.5075549      Incl.    9.30350     -0.18846737     +0.41365483             
P   1.76           H   26.22          G   0.15           U   8                  
Residuals in seconds of arc
211209 G96 (0.4-  1.5-)   211209 I52  0.0   0.1+    211210 H21  0.3+  0.2-
211209 G96 (0.3-  1.3-)   211209 I52  0.0   0.2-    211210 J95  0.0   0.2+
211209 G96  0.0   0.2+    211209 L06  0.0   0.5+    211210 J95  0.7-  0.4+
211209 G96  0.0   0.0     211209 L06  0.0   0.4+    211210 J95  0.3-  0.1-
211209 I52  0.0   0.1-    211210 H21  0.1-  0.1-    211210 J95  0.4+  0.1-
211209 I52  0.1-  0.4-    211210 H21  0.4+  0.0     211210 J95  0.4-  0.1-

Ephemeris:
2021 XD5                 a,e,i = 1.46, 0.51, 9                   q = 0.7178
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 10    16 46 25.0 -41 11 49   0.2440  0.7975    33.2   137.1    29.2
...
2021 11 25    17 03 33.8 -46 54 33   0.09865 0.9022    29.0   147.9    29.0
...
2021 12 03    18 14 05.4 -63 05 40   0.02804 0.9659    44.2   134.6    24.6
...
2021 12 09    04 12 23.7 +19 24 28   0.03118 1.0155   167.8    11.8    19.4
2021 12 10    04 19 17.3 +24 13 51   0.03967 1.0238   169.0    10.6    19.9
2021 12 11    04 24 02.9 +27 19 33   0.04838 1.0322   168.4    11.0    20.4
...
2021 12 17    04 36 57.2 +34 25 53   0.1026  1.0825   162.7    15.7    22.3
...
2021 12 25    04 43 58.7 +36 43 39   0.1784  1.1495   156.6    19.9    23.8
...
2022 01 09    04 55 17.4 +37 21 29   0.3337  1.2724   145.5    26.0    25.5

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X185




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