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312254 (2008 AL2)
Classification: Main-belt Asteroid          SPK-ID: 2312254
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1210494394628051 1.0447e-07  
a 2.578629069800965 3.4005e-08 au
q 2.266487466319064 2.8621e-07 au
i 15.56237811071239 8.6461e-06 deg
node 118.34295394 2.4382e-05 deg
peri 200.0721134410513 3.6089e-05 deg
M 151.3283675991879 2.3119e-05 deg
tp 2458364.730653183625
(2018-Sep-03.23065318)
9.782e-05 TDB
period 1512.45247989527
4.14
2.9918e-05
8.191e-08
d
yr
n .2380240072236373 4.7083e-09 deg/d
Q 2.890770673282867 3.8121e-08 au
  Orbit Determination Parameters
   # obs. used (total)      198  
   data-arc span      6296 days (17.24 yr)  
   first obs. used      2002-11-05  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63296  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:44:51  

Additional Information
 Earth MOID = 1.25736 au 
 Jupiter MOID = 2.38647 au 
 T_jup = 3.364 
[ 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 16.2   n/a MPO455301  

312254 (2008 AL2)          Discovered 2008-Jan-03 by Hug, G. at Eskridge
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2008 AL2 = 2005 JJ181 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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