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312281 (2008 AR128)
Classification: Main-belt Asteroid          SPK-ID: 2312281
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .125860074622381 3.4377e-07  
a 2.571271866668607 5.9523e-08 au
q 2.247651397655267 9.2653e-07 au
i 8.160807050190346 1.0677e-05 deg
node 275.7885782765617 7.0518e-05 deg
peri 244.7847426491926 9.6057e-05 deg
M 336.8073080661112 9.2299e-05 deg
tp 2459097.521745244257
(2020-Sep-05.02174524)		 0.00038915 TDB
period 1505.984229320818
4.12		 5.2294e-05
1.432e-07		 d
yr
n .239046327970085 8.3007e-09 deg/d
Q 2.894892335681946 6.7015e-08 au
   Orbit Determination Parameters
   # obs. used (total)      99  
   data-arc span      5823 days (15.94 yr)  
   first obs. used      2004-02-14  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58558  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:45:02  

Additional Information
 Earth MOID = 1.27121 au 
 Jupiter MOID = 2.16705 au 
 T_jup = 3.404 
[ 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 17.0   n/a MPO455301  

312281 (2008 AR128)          Discovered 2008-Jan-14 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

Alternate Designations
 2008 AR128 = 2004 CF106 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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