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JPL Small-Body Database Browser
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312259 (2008 AR20)
Classification: Main-belt Asteroid          SPK-ID: 2312259
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1078790859130329 1.0661e-07  
a 2.654883378776928 3.1552e-08 au
q 2.368476986668769 2.7366e-07 au
i 5.066465354204825 9.5789e-06 deg
node 333.6039167342996 7.0187e-05 deg
peri 196.9430616180603 7.5143e-05 deg
M 187.9055162468919 2.5589e-05 deg
tp 2459355.820111870714
(2021-May-21.32011187)
0.00011491 TDB
period 1580.034608567435
4.33
2.8167e-05
7.712e-08
d
yr
n .227843110554648 4.0618e-09 deg/d
Q 2.941289770885087 3.4956e-08 au
  Orbit Determination Parameters
   # obs. used (total)      124  
   data-arc span      4766 days (13.05 yr)  
   first obs. used      2006-10-17  
   last obs. used      2019-11-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52247  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 21:31:43  

Additional Information
 Earth MOID = 1.37557 au 
 Jupiter MOID = 2.03729 au 
 T_jup = 3.375 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.9   n/a MPO455301  

312259 (2008 AR20)          Discovered 2008-Jan-10 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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