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74158 (1998 QU97)
Classification: Main-belt Asteroid          SPK-ID: 2074158
[ 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 .2223614677093734 6.2683e-08  
a 2.388759543824134 1.7184e-08 au
q 1.857591465654626 1.5373e-07 au
i 22.67635296768825 8.0501e-06 deg
node 324.8130840060487 1.4481e-05 deg
peri 298.8689992769516 2.4416e-05 deg
M 27.32720990836278 2.6403e-05 deg
tp 2458898.135381629314
(2020-Feb-18.63538163)		 9.8238e-05 TDB
period 1348.519030556776
3.69		 1.4551e-05
3.984e-08		 d
yr
n .2669595251105676 2.8806e-09 deg/d
Q 2.919927621993641 2.1005e-08 au
   Orbit Determination Parameters
   # obs. used (total)      593  
   data-arc span      8525 days (23.34 yr)  
   first obs. used      1997-02-03  
   last obs. used      2020-06-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59013  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:48:58  

Additional Information
 Earth MOID = .929328 au 
 Jupiter MOID = 2.5333 au 
 T_jup = 3.397 
[ 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 14.9   n/a MPO236708  

74158 (1998 QU97)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 QU97 = 1997 EJ7 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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