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(2021 DM)
Classification: Apollo [NEO]          SPK-ID: 54123256
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459262.5 (2021-Feb-17.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3273294062892434 0.0010656  
a 1.428241133535738 0.0021853 au
q .960735811257609 5.2058e-05 au
i 14.70438726168408 0.034456 deg
node 334.7287465370215 0.0017167 deg
peri 222.7579967237499 0.0069875 deg
M 334.4464574756303 0.07028 deg
tp 2459306.753675462830
(2021-Apr-02.25367546)
0.020148 TDB
period 623.4487117168021
1.71
1.4309
0.003918
d
yr
n .5774332246331241 0.0013253 deg/d
Q 1.895746455813867 0.0029006 au
  Orbit Determination Parameters
   # obs. used (total)      18  
   data-arc span      7 days  
   first obs. used      2021-02-16  
   last obs. used      2021-02-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .46978  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:26:05  

Additional Information
 Earth MOID = .0311208 au 
 Jupiter MOID = 3.10928 au 
 T_jup = 4.601 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 1.135461238204834E-6 -5.534415954277461E-8 -2.146479531175353E-5 -1.829101609408939E-6 -7.410744457504444E-6 3.67147256778592E-5
q -5.534415954277461E-8 2.710003831331038E-9 1.04483089407608E-6 8.916393117913779E-8 3.588648930032085E-7 -1.788644658458755E-6
tp -2.146479531175353E-5 1.04483089407608E-6 .0004059444615876335 3.457604769001274E-5 .0001403721282465238 -.000694144393559257
node -1.829101609408939E-6 8.916393117913779E-8 3.457604769001274E-5 2.947052057883611E-6 1.1935186149926E-5 -5.914380110400292E-5
peri -7.410744457504444E-6 3.588648930032085E-7 .0001403721282465238 1.1935186149926E-5 4.882533767512133E-5 -.000239779008566402
i 3.67147256778592E-5 -1.788644658458755E-6 -.000694144393559257 -5.914380110400292E-5 -.000239779008566402 .001187231443068127

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 26.10   .34422 E2021D90 autocmod 2.8

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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