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74166 (1998 QO109)
Classification: Main-belt Asteroid          SPK-ID: 2074166
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1839246012981768 5.4498e-08  
a 2.634627660004847 1.9227e-08 au
q 2.150054818069307 1.5315e-07 au
i 3.10506200006084 4.0538e-06 deg
node 248.1051709073388 9.7375e-05 deg
peri 106.7270791843234 9.8332e-05 deg
M 10.44953085407608 1.6256e-05 deg
tp 2458955.161036309621
(2020-Apr-15.66103631)
7.0209e-05 TDB
period 1561.986576858584
4.28
1.7099e-05
4.681e-08
d
yr
n .2304757322076481 2.523e-09 deg/d
Q 3.119200501940387 2.2764e-08 au
  Orbit Determination Parameters
   # obs. used (total)      680  
   data-arc span      13385 days (36.65 yr)  
   first obs. used      1981-08-30  
   last obs. used      2018-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59943  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-07 04:44:47  

Additional Information
 Earth MOID = 1.14791 au 
 Jupiter MOID = 2.34031 au 
 T_jup = 3.372 
[ 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 15.0   n/a MPO474627  

74166 (1998 QO109)          Discovered 1998-Aug-19 by NEAT at Haleakala
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QO109 = 1981 QX4 = 1981 UO1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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