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308454 (2005 SF256)
Classification: Main-belt Asteroid          SPK-ID: 2308454
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1731494099764827 1.1067e-07  
a 3.091715448886848 3.4232e-08 au
q 2.556386743096914 3.4336e-07 au
i 7.219783262047133 1.1811e-05 deg
node 198.3474230830796 6.3545e-05 deg
peri 164.7856207132685 6.9885e-05 deg
M 250.5585375627985 2.6602e-05 deg
tp 2459604.138717877852
(2022-Jan-24.63871788)
0.00015189 TDB
period 1985.627143466956
5.44
3.2978e-05
9.029e-08
d
yr
n .1813029204321969 3.0112e-09 deg/d
Q 3.627044154676783 4.016e-08 au
  Orbit Determination Parameters
   # obs. used (total)      139  
   data-arc span      7110 days (19.47 yr)  
   first obs. used      2000-10-29  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60696  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:12:34  

Additional Information
 Earth MOID = 1.55518 au 
 Jupiter MOID = 1.84815 au 
 T_jup = 3.189 
[ 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 16.3   n/a MPO397081  

308454 (2005 SF256)          Discovered 2005-Sep-22 by NEAT at Palomar
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

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