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442291 (2011 SZ20)
Classification: Main-belt Asteroid          SPK-ID: 2442291
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 .2577859701874698 6.8572e-08  
a 2.619793600031859 4.5574e-08 au
q 1.944447565156722 2.0421e-07 au
i 11.69189111008907 9.5691e-06 deg
node 298.2803946365426 3.55e-05 deg
peri 110.5202827140821 5.3441e-05 deg
M 353.9623062918267 4.859e-05 deg
tp 2459026.475721474026
(2020-Jun-25.97572147)
0.00020967 TDB
period 1548.81320296037
4.24
4.0415e-05
1.107e-07
d
yr
n .2324360350957128 6.0652e-09 deg/d
Q 3.295139634906996 5.7323e-08 au
  Orbit Determination Parameters
   # obs. used (total)      117  
   data-arc span      5699 days (15.60 yr)  
   first obs. used      2003-12-21  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62619  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:42:57  

Additional Information
 Earth MOID = .990629 au 
 Jupiter MOID = 2.21503 au 
 T_jup = 3.329 
[ 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 17.0   n/a MPO477087  

442291 (2011 SZ20)          Discovered 2003-Dec-21 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 SZ20 = 2004 BG49 = 2007 XF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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