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305547 (2008 SY256)
Classification: Main-belt Asteroid          SPK-ID: 2305547
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1334870067962808 4.9503e-08  
a 2.226082882141886 1.193e-08 au
q 1.928929741324328 1.1061e-07 au
i 7.654574111105673 5.2e-06 deg
node 64.39977046678112 3.4527e-05 deg
peri 302.0737780269537 3.8054e-05 deg
M 187.5744078101255 1.5996e-05 deg
tp 2459581.544838236953
(2022-Jan-02.04483824)
5.4486e-05 TDB
period 1213.138601460965
3.32
9.7525e-06
2.67e-08
d
yr
n .2967509232386615 2.3856e-09 deg/d
Q 2.523236022959444 1.3523e-08 au
  Orbit Determination Parameters
   # obs. used (total)      290  
   data-arc span      6846 days (18.74 yr)  
   first obs. used      2001-07-24  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57452  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:00:14  

Additional Information
 Earth MOID = .941169 au 
 Jupiter MOID = 2.95721 au 
 T_jup = 3.622 
[ 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 17.1   n/a MPO418594  

305547 (2008 SY256)          Discovered 2008-Sep-21 by CSS at Catalina
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

Alternate Designations
 2008 SY256 = 2005 YQ4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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