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305303 (2008 AC31)
Classification: Main-belt Asteroid          SPK-ID: 2305303
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 .09028962702964248 6.1989e-08  
a 2.756568319443652 5.3512e-08 au
q 2.507678793999356 1.9076e-07 au
i 8.727665373418574 7.8616e-06 deg
node 207.22206028364 4.8529e-05 deg
peri 291.5912507462485 6.7723e-05 deg
M 212.8972736805387 4.9635e-05 deg
tp 2459683.577198816364
(2022-Apr-14.07719882)
0.00023626 TDB
period 1671.673922887439
4.58
4.8677e-05
1.333e-07
d
yr
n .2153530034004367 6.2708e-09 deg/d
Q 3.005457844887948 5.8344e-08 au
  Orbit Determination Parameters
   # obs. used (total)      147  
   data-arc span      4263 days (11.67 yr)  
   first obs. used      2006-08-21  
   last obs. used      2018-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67164  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-07 06:40:40  

Additional Information
 Earth MOID = 1.53584 au 
 Jupiter MOID = 2.05415 au 
 T_jup = 3.321 
[ 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 16.7   n/a MPO450228  

305303 (2008 AC31)          Discovered 2008-Jan-12 by Sheridan, E. at Kanab
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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