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541644 (2011 US203)
Classification: Main-belt Asteroid          SPK-ID: 2541644
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1602744079819839 3.331e-07  
a 2.577141011952587 1.3577e-07 au
q 2.164091261975795 9.6615e-07 au
i 3.24792654699295 1.2113e-05 deg
node 86.7291690770231 0.00025529 deg
peri 267.4916935373519 0.00037707 deg
M 120.440276057388 0.00020879 deg
tp 2458694.937396414708
(2019-Jul-30.43739641)
0.00091525 TDB
period 1511.14347499489
4.14
0.00011942
3.27e-07
d
yr
n .2382301918758689 1.8826e-08 deg/d
Q 2.990190761929379 1.5753e-07 au
  Orbit Determination Parameters
   # obs. used (total)      67  
   data-arc span      6764 days (18.52 yr)  
   first obs. used      2001-05-22  
   last obs. used      2019-11-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .51172  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:23:56  

Additional Information
 Earth MOID = 1.16039 au 
 Jupiter MOID = 2.44822 au 
 T_jup = 3.406 
[ 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 18.0   n/a MPO504440  

541644 (2011 US203)          Discovered 2011-Oct-21 by Mount Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2019-12-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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