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(2021 AL1)
Classification: Apollo [NEO]          SPK-ID: 54104546
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5771036057437863 0.00059052  
a 1.993936875499689 0.0025539 au
q .8432287150233193 9.7442e-05 au
i .2049147861962202 0.00020785 deg
node 56.26414773010413 0.012417 deg
peri 115.1204528728401 0.0099293 deg
M 266.1271193829743 0.18362 deg
tp 2459268.665669552756
(2021-Feb-23.16566955)
0.009332 TDB
period 1028.408209106165
2.82
1.9758
0.005409
d
yr
n .3500555487717197 0.00067254 deg/d
Q 3.144645035976058 0.0040277 au
  Orbit Determination Parameters
   # obs. used (total)      69  
   data-arc span      13 days  
   first obs. used      2021-01-04  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .63853  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-17 06:06:57  

Additional Information
 Earth MOID = .000481583 au 
 Jupiter MOID = 1.82633 au 
 T_jup = 3.621 
[ 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 25.266   .48257 11 autocmod 2.8

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