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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 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3273294080863413 0.0010656  
a 1.428241137317767 0.0021853 au
q .9607358112349794 5.2058e-05 au
i 14.70438728610812 0.034456 deg
node 334.7287465737099 0.0017167 deg
peri 222.7579967063719 0.0069875 deg
M 334.4464576138307 0.07028 deg
tp 2459306.753675399272
(2021-Apr-02.25367540)
0.020148 TDB
period 623.4487141931708
1.71
1.4309
0.003918
d
yr
n .5774332223395312 0.0013253 deg/d
Q 1.895746463400555 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .46978  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-23 05:19:51  

Additional Information
 Earth MOID = .0311208 au 
 Jupiter MOID = 3.10928 au 
 T_jup = 4.601 
[ show covariance matrix ]

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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