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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09452653320882375 5.0595e-08  
a 3.195518382418745 2.368e-08 au
q 2.893457107923632 1.6066e-07 au
i 5.718376833608405 4.1223e-06 deg
node 108.0622962748708 5.0136e-05 deg
peri 243.3482619005007 5.4859e-05 deg
M 120.3586919081302 2.0951e-05 deg
tp 2458698.933902139919
(2019-Aug-03.43390214)
0.00012215 TDB
period 2086.461652651659
5.71
2.3192e-05
6.35e-08
d
yr
n .1725409137246689 1.9179e-09 deg/d
Q 3.497579656913856 2.5918e-08 au
  Orbit Determination Parameters
   # obs. used (total)      984  
   data-arc span      10728 days (29.37 yr)  
   first obs. used      1991-11-03  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55358  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:48:39  

Additional Information
 Earth MOID = 1.89242 au 
 Jupiter MOID = 1.90367 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 14.33   n/a MPCxxxxx  

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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