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213866 (2003 ST157)
Classification: Main-belt Asteroid          SPK-ID: 2213866
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1709894284863548 5.9899e-08  
a 2.375633205059696 1.214e-08 au
q 1.969425041033331 1.4282e-07 au
i 2.751593919787326 6.3544e-06 deg
node .8710999234226788 7.9591e-05 deg
peri 29.06544988841103 8.0556e-05 deg
M 242.3065429671325 1.5134e-05 deg
tp 2459637.737423174562
(2022-Feb-27.23742317)
5.8663e-05 TDB
period 1337.419057194357
3.66
1.0252e-05
2.807e-08
d
yr
n .2691751684436211 2.0633e-09 deg/d
Q 2.781841369086061 1.4215e-08 au
  Orbit Determination Parameters
   # obs. used (total)      471  
   data-arc span      7082 days (19.39 yr)  
   first obs. used      2001-02-01  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57262  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:44:25  

Additional Information
 Earth MOID = .973905 au 
 Jupiter MOID = 2.66478 au 
 T_jup = 3.520 
[ 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 16.37   n/a E2021B55  

213866 (2003 ST157)          Discovered 2003-Sep-19 by LONEOS at Anderson Mesa
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

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