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JPL Small-Body Database Browser
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172485 (2003 ST117)
Classification: Main-belt Asteroid          SPK-ID: 2172485
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1256407370550998 4.9489e-08  
a 2.371519306584645 1.5072e-08 au
q 2.073559872964951 1.1855e-07 au
i 6.073700683806279 4.8031e-06 deg
node 270.2434942195278 5.197e-05 deg
peri 46.8586360945834 5.6427e-05 deg
M 244.8051764816192 2.6329e-05 deg
tp 2459427.343710724084
(2021-Jul-31.84371072)
0.00010032 TDB
period 1333.94653654859
3.65
1.2717e-05
3.482e-08
d
yr
n .2698758834304202 2.5728e-09 deg/d
Q 2.669478740204339 1.6966e-08 au
  Orbit Determination Parameters
   # obs. used (total)      428  
   data-arc span      7505 days (20.55 yr)  
   first obs. used      1999-07-13  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59391  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:50:04  

Additional Information
 Earth MOID = 1.06527 au 
 Jupiter MOID = 2.5822 au 
 T_jup = 3.526 
[ 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 16.2   n/a MPO417928  

172485 (2003 ST117)          Discovered 2003-Sep-16 by NEAT at Palomar
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

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