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78491 (2002 RQ61)
Classification: Main-belt Asteroid          SPK-ID: 2078491
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09435752090695353 5.2169e-08  
a 3.194070954938114 2.4375e-08 au
q 2.892686338029248 1.6706e-07 au
i 5.718771993171996 4.1651e-06 deg
node 108.0615810099722 5.2933e-05 deg
peri 243.087467520286 5.7517e-05 deg
M 52.29309782474007 2.1145e-05 deg
tp 2458697.629387723368
(2019-Aug-02.12938772)
0.00012292 TDB
period 2085.044201913837
5.71
2.3867e-05
6.534e-08
d
yr
n .1726582101566769 1.9764e-09 deg/d
Q 3.495455571846981 2.6675e-08 au
  Orbit Determination Parameters
   # obs. used (total)      890  
   data-arc span      10574 days (28.95 yr)  
   first obs. used      1991-11-03  
   last obs. used      2020-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57233  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:39  

Additional Information
 Earth MOID = 1.89236 au 
 Jupiter MOID = 1.90501 au 
 T_jup = 3.181 
[ 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 14.3   n/a MPO453206  

78491 (2002 RQ61)          Discovered 2002-Sep-05 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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