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393512 (2002 SW20)
Classification: Main-belt Asteroid          SPK-ID: 2393512
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2184447488305812 3.2688e-08  
a 2.609101943600788 1.5638e-08 au
q 2.039157324857532 8.3296e-08 au
i 13.21632100208622 6.9693e-06 deg
node 181.4690680343882 3.3933e-05 deg
peri 135.7459245172766 4.2774e-05 deg
M 102.2562691297708 2.7215e-05 deg
tp 2458563.257426480759
(2019-Mar-20.75742648)
0.00011427 TDB
period 1539.341575890717
4.21
1.3839e-05
3.789e-08
d
yr
n .2338662228308174 2.1026e-09 deg/d
Q 3.179046562344043 1.9054e-08 au
  Orbit Determination Parameters
   # obs. used (total)      259  
   data-arc span      6292 days (17.23 yr)  
   first obs. used      2002-09-07  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57869  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 21:28:23  

Additional Information
 Earth MOID = 1.04918 au 
 Jupiter MOID = 2.27872 au 
 T_jup = 3.340 
[ 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 16.8   n/a MPO450380  

393512 (2002 SW20)          Discovered 2002-Sep-26 by NEAT at Palomar
Reference: Last Updated: 2014-05-15

Alternate Designations
 2002 SW20 = 2006 QS97 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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