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150828 (2001 SJ21)
Classification: Main-belt Asteroid          SPK-ID: 2150828
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2337709575651753 3.1922e-08  
a 2.660091587087369 1.2709e-08 au
q 2.038239429562888 8.2058e-08 au
i 5.696778062912289 4.7634e-06 deg
node 56.55461509918756 6.0613e-05 deg
peri 27.42999752237757 6.2793e-05 deg
M 108.6025461790442 1.5276e-05 deg
tp 2458722.441749302900
(2019-Aug-26.94174930)		 6.6667e-05 TDB
period 1584.686329243398
4.34		 1.1356e-05
3.109e-08		 d
yr
n .2271742952259078 1.628e-09 deg/d
Q 3.28194374461185 1.5679e-08 au
   Orbit Determination Parameters
   # obs. used (total)      657  
   data-arc span      7728 days (21.16 yr)  
   first obs. used      1999-04-14  
   last obs. used      2020-06-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56113  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:20:12  

Additional Information
 Earth MOID = 1.05579 au 
 Jupiter MOID = 1.9813 au 
 T_jup = 3.340 
[ 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 15.91   n/a E2021B55  

150828 (2001 SJ21)          Discovered 2001-Sep-16 by LINEAR at Socorro
Reference: 20070303/Numbers.arcLast Updated: 2007-03-07

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