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(2021 BT)
Classification: Apollo [NEO]          SPK-ID: 54106304
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 2459234.5 (2021-Jan-20.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6335545899928815 0.00090557  
a 2.334014590014748 0.0054219 au
q .8552889334005511 0.00012679 au
i 5.631764828110057 0.0073547 deg
node 110.1608881637847 0.0023734 deg
peri 79.37874846674399 0.0010399 deg
M 345.1159646638075 0.055063 deg
tp 2459288.348296426137
(2021-Mar-14.84829643)
0.011578 TDB
period 1302.428157118866
3.57
4.5383
0.01243
d
yr
n .2764068006609784 0.00096314 deg/d
Q 3.812740246628946 0.008857 au
  Orbit Determination Parameters
   # obs. used (total)      59  
   data-arc span      25 days  
   first obs. used      2021-01-16  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .36788  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:24:05  

Additional Information
 Earth MOID = .0479781 au 
 Jupiter MOID = 1.1854 au 
 T_jup = 3.261 
[ 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 23.36   .32151 E2021G84 autocmod 2.8

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