[Iaude] MPEC Y09: 2021 DM15 [a=45.43,e=0.03,i=2.4,H=7.4]

[mpec at marsden.cfa.harvard.edu]

M.P.E.C. 2021-Y09                             Issued 2021 December 16, 18:27 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 DM15                                    


Observations:
     K21D15M*5C2021 02 17.22589 07 24 24.954+21 10 45.84         23.8 rVEY009568
     K21D15M 5C2021 02 17.40002 07 24 24.282+21 10 47.42         23.6 rVEY009568
     K21D15M 5C2021 03 09.03994 07 23 26.190+21 13 11.42         23.9 GVEY009304
     K21D15M 5C2021 03 09.09481 07 23 26.060+21 13 11.89               VEY009304
     K21D15M 5C2021 03 17.09111 07 23 11.657+21 13 52.70         23.9 rVEY009304
     K21D15M 5C2021 03 18.01487 07 23 10.373+21 13 56.76         23.9 rVEY009304
     K21D15M 5C2021 04 11.99946 07 23 06.386+21 14 44.81         23.8 rVEY009304
     K21D15M 5C2021 10 30.36559 07 36 44.173+20 46 41.11         23.7 rVEY009304
     K21D15M 5C2021 12 06.23741 07 35 19.896+20 49 38.82         24.0 rVEY009304
     K21D15M 5C2021 12 07.24533 07 35 16.107+20 49 47.11         23.8 rVEY009304
     K21D15M 5C2021 12 07.31260 07 35 15.849+20 49 47.74         23.6 rVEY009304

Observer details:
304 Las Campanas Observatory.  Observers S. S. Sheppard, C. Trujillo, W.
    Oldroyd.  Measurers S. S. Sheppard, C. Trujillo.  6.5-m Magellan-Baade
    telescope + CCD.
568 Mauna Kea.  Observers S. S. Sheppard, D. J. Tholen, C. Trujillo.  Measurer
    S. S. Sheppard.  8.2-m reflector + CCD.

Orbital elements:
2021 DM15                                                                       
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Alexandersen            
M 317.05381              (2000.0)            P               Q                  
n   0.00321843     Peri.   26.74046     -0.92142938     -0.38724473             
a  45.4332471      Node   130.43955     +0.34859571     -0.86003462             
e   0.0334071      Incl.    2.39247     +0.17160688     -0.33223782             
P 306              H    7.44          G   0.15           U   8                  
Residuals in seconds of arc
210217 568  0.1+  0.1-    210317 304  0.1+  0.1-    211206 304  0.1-  0.1+
210217 568  0.1-  0.0     210318 304  0.1+  0.0     211207 304  0.0   0.1-
210309 304  0.0   0.0     210411 304  0.0   0.0     211207 304  0.1+  0.0
210309 304  0.1-  0.1+    211030 304  0.0   0.1-

Ephemeris:
2021 DM15                a,e,i = 45.43, 0.03, 2                  q = 43.9155
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 16    07 36 20.5 +20 47 27  43.8316 44.3507   121.1     1.1    24.0
...
2021 12 01    07 35 38.5 +20 48 57  43.6301 44.3498   136.4     0.9    24.0
...
2021 12 09    07 35 09.3 +20 50 02  43.5421 44.3493   144.7     0.7    24.0
...
2021 12 15    07 34 44.9 +20 50 57  43.4867 44.3489   150.9     0.6    24.0
2021 12 16    07 34 40.6 +20 51 07  43.4784 44.3489   151.9     0.6    24.0
2021 12 17    07 34 36.3 +20 51 16  43.4703 44.3488   152.9     0.6    24.0
...
2021 12 23    07 34 09.4 +20 52 17  43.4279 44.3484   159.1     0.5    24.0
...
2021 12 31    07 33 31.6 +20 53 44  43.3877 44.3480   167.4     0.3    23.9
...
2022 01 15    07 32 17.4 +20 56 35  43.3649 44.3470   176.9     0.1    23.9

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-Y09