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JPL Small-Body Database Browser
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146493 (2001 SF21)
Classification: Main-belt Asteroid          SPK-ID: 2146493
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05831080945069341 3.5384e-08  
a 2.660262902673833 1.8533e-08 au
q 2.50514081946727 9.588e-08 au
i 4.761189219410268 4.0891e-06 deg
node 69.48632016010602 6.6854e-05 deg
peri 9.131018327105741 8.6966e-05 deg
M 320.6812701912526 5.5826e-05 deg
tp 2458773.594091240449
(2019-Oct-17.09409124)
0.0002463 TDB
period 1584.839417490504
4.34
1.6562e-05
4.534e-08
d
yr
n .2271523512268757 2.3738e-09 deg/d
Q 2.815384985880395 1.9614e-08 au
  Orbit Determination Parameters
   # obs. used (total)      486  
   data-arc span      6209 days (17.00 yr)  
   first obs. used      2001-09-16  
   last obs. used      2018-09-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59707  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 11:40:10  

Additional Information
 Earth MOID = 1.52049 au 
 Jupiter MOID = 2.32679 au 
 T_jup = 3.379 
[ 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 15.7   n/a MPO412892  

146493 (2001 SF21)          Discovered 2001-Sep-16 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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