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JPL Small-Body Database Browser
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390983 (2005 SO21)
Classification: Main-belt Asteroid          SPK-ID: 2390983
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2162314705521853 8.1634e-08  
a 3.108048813432009 7.5677e-08 au
q 2.435990847955631 2.4602e-07 au
i 16.06915152227091 1.4424e-05 deg
node 203.0292151017126 3.0797e-05 deg
peri 80.97023555318729 4.9444e-05 deg
M 320.0446540281202 4.9254e-05 deg
tp 2459222.627622450394
(2021-Jan-08.12762245)
0.0002796 TDB
period 2001.382847202001
5.48
7.3097e-05
2.001e-07
d
yr
n .17987562974435 6.5696e-09 deg/d
Q 3.780106778908388 9.2041e-08 au
  Orbit Determination Parameters
   # obs. used (total)      125  
   data-arc span      5240 days (14.35 yr)  
   first obs. used      2005-09-25  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61699  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 04:36:43  

Additional Information
 Earth MOID = 1.48376 au 
 Jupiter MOID = 1.64502 au 
 T_jup = 3.124 
[ 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 15.6   n/a MPO342135  

390983 (2005 SO21)          Discovered 2005-Sep-25 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-04-17

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