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(2021 AL)
Classification: Apollo [NEO]          SPK-ID: 54104252
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2981505934821386 0.00030977  
a 1.200915724736008 0.00033419 au
q .8428619886839348 0.00013746 au
i 1.715151210499275 0.0017638 deg
node 292.4851424219706 0.0014948 deg
peri 258.7518399843045 0.0064262 deg
M 141.9079584419329 0.096922 deg
tp 2458811.016466245084
(2019-Nov-23.51646625)		 0.20851 TDB
period 480.6923649717799
1.32		 0.20065
0.0005493		 d
yr
n .7489197379307962 0.00031261 deg/d
Q 1.558969460788082 0.00043383 au
   Orbit Determination Parameters
   # obs. used (total)      56  
   data-arc span      31 days  
   first obs. used      2020-12-23  
   last obs. used      2021-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .31353  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-28 06:47:26  

Additional Information
 Earth MOID = .00542545 au 
 Jupiter MOID = 3.3989 au 
 T_jup = 5.250 
[ 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 24.7   .4658 E2021D54 autocmod 2.8

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