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541589 (2011 UG4)
Classification: Mars-crossing Asteroid          SPK-ID: 2541589
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1355653821159306 6.836e-08  
a 1.902239173216448 1.0657e-08 au
q 1.644361392823468 1.2895e-07 au
i 21.64851622591672 1.3179e-05 deg
node 23.52975513634639 1.2862e-05 deg
peri 248.4275769954808 4.6097e-05 deg
M 273.4091757427274 4.5455e-05 deg
tp 2459430.997108254228
(2021-Aug-04.49710825)
0.0001209 TDB
period 958.2881290629708
2.62
8.0528e-06
2.205e-08
d
yr
n .3756698941392644 3.1569e-09 deg/d
Q 2.160116953609427 1.2101e-08 au
  Orbit Determination Parameters
   # obs. used (total)      127  
   data-arc span      3476 days (9.52 yr)  
   first obs. used      2011-10-03  
   last obs. used      2021-04-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47506  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 13:25:26  

Additional Information
 Earth MOID = .7183 au 
 Jupiter MOID = 2.96505 au 
 T_jup = 3.849 
[ 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 18.2   n/a MPO265012  

541589 (2011 UG4)          Discovered 2011-Oct-03 by PMO NEO Survey Program at XuYi
Reference: Last Updated: 2019-12-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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