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74654 (1999 RU85)
Classification: Main-belt Asteroid          SPK-ID: 2074654
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1424778820946688 3.5422e-08  
a 2.45540816776573 1.0795e-08 au
q 2.105566812344518 8.8185e-08 au
i 2.870083176477564 4.4197e-06 deg
node 51.74198169218882 9.2712e-05 deg
peri 319.6524239665194 9.5105e-05 deg
M 124.9125951278786 2.2888e-05 deg
tp 2458512.873048364202
(2019-Jan-29.37304836)
8.7434e-05 TDB
period 1405.348295015193
3.85
9.2675e-06
2.537e-08
d
yr
n .2561642557058127 1.6893e-09 deg/d
Q 2.805249523186943 1.2333e-08 au
  Orbit Determination Parameters
   # obs. used (total)      640  
   data-arc span      8424 days (23.06 yr)  
   first obs. used      1997-01-10  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5823  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:20:17  

Additional Information
 Earth MOID = 1.10659 au 
 Jupiter MOID = 2.65791 au 
 T_jup = 3.477 
[ 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 15.8   n/a MPO302457  

74654 (1999 RU85)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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