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JPL Small-Body Database Browser
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212925 (2008 AL31)
Classification: Outer Main-belt Asteroid          SPK-ID: 2212925
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .04079843532765724 1.2534e-07  
a 3.213505303065828 7.5758e-08 au
q 3.082399314783613 4.2714e-07 au
i 10.35975306390152 1.3318e-05 deg
node 303.5492685299267 5.434e-05 deg
peri 354.444705784123 0.00014056 deg
M 162.8508388167051 0.00012982 deg
tp 2457648.680808112829
(2016-Sep-17.18080811)
0.00075894 TDB
period 2104.102819298665
5.76
7.4406e-05
2.037e-07
d
yr
n .1710943004771955 6.0503e-09 deg/d
Q 3.344611291348043 7.8849e-08 au
  Orbit Determination Parameters
   # obs. used (total)      130  
   data-arc span      4899 days (13.41 yr)  
   first obs. used      2005-08-06  
   last obs. used      2019-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5734  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:08:08  

Additional Information
 Earth MOID = 2.06614 au 
 Jupiter MOID = 1.86043 au 
 T_jup = 3.164 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO422828  

212925 (2008 AL31)          Discovered 2008-Jan-10 by Calvin College at Calvin-Rehoboth
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

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