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213397 (2001 US203)
Classification: Main-belt Asteroid          SPK-ID: 2213397
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0364944914484607 6.1274e-08  
a 3.013399832615545 2.9154e-08 au
q 2.903427338193364 1.9368e-07 au
i 11.89780621762703 6.4348e-06 deg
node 24.18054931091504 2.3536e-05 deg
peri 349.5851431039143 7.6909e-05 deg
M 257.9934093982467 7.5558e-05 deg
tp 2459741.888838670772
(2022-Jun-11.38883867)
0.00040467 TDB
period 1910.660681547451
5.23
2.7728e-05
7.592e-08
d
yr
n .1884165008872401 2.7343e-09 deg/d
Q 3.123372327037726 3.0218e-08 au
  Orbit Determination Parameters
   # obs. used (total)      237  
   data-arc span      6814 days (18.66 yr)  
   first obs. used      2001-10-19  
   last obs. used      2020-06-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55831  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:42:32  

Additional Information
 Earth MOID = 1.90412 au 
 Jupiter MOID = 2.05065 au 
 T_jup = 3.215 
[ 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 15.83   n/a E2021B55  

213397 (2001 US203)          Discovered 2001-Oct-19 by NEAT at Palomar
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

Alternate Designations
 2001 US203 = 2004 GJ8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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