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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5770946761531522 0.00059051  
a 1.994263354545978 0.0025548 au
q .8433845897901676 9.7191e-05 au
i .20493988518425 0.00020788 deg
node 56.25896889383312 0.012425 deg
peri 115.113314330162 0.0099416 deg
M 336.1452458108399 0.049099 deg
tp 2459268.662362608233
(2021-Feb-23.16236261)
0.0093114 TDB
period 1028.660800458572
2.82
1.9767
0.005412
d
yr
n .3499695913750322 0.00067251 deg/d
Q 3.145142119301788 0.0040292 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .63853  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:22:32  

Additional Information
 Earth MOID = .000452258 au 
 Jupiter MOID = 1.82493 au 
 T_jup = 3.620 
[ 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 25.28   .48257 E2021B25 autocmod 2.8

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