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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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2223615140495708 4.758e-08  
a 2.388759528888383 1.2129e-08 au
q 1.857591343344423 1.1046e-07 au
i 22.67635396053295 7.8495e-06 deg
node 324.8130730717344 1.1036e-05 deg
peri 298.8689965763303 2.1012e-05 deg
M 27.3272343969452 1.8632e-05 deg
tp 2458898.135290857926
(2020-Feb-18.63529086)		 6.9635e-05 TDB
period 1348.519017909326
3.69		 1.0271e-05
2.812e-08		 d
yr
n .2669595276143197 2.0333e-09 deg/d
Q 2.919927714432343 1.4827e-08 au
   Orbit Determination Parameters
   # obs. used (total)      812  
   data-arc span      8631 days (23.63 yr)  
   first obs. used      1997-02-03  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5302  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 18:49:09  

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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