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120457 (1990 QZ2)
Classification: Main-belt Asteroid          SPK-ID: 2120457
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2397954600589161 3.0816e-08  
a 2.348139339422914 6.3243e-09 au
q 1.785066186243557 7.1611e-08 au
i 2.137088817736716 3.5525e-06 deg
node 352.7838181885738 0.00010633 deg
peri 12.44299076192845 0.00010663 deg
M 137.6813541645795 7.9962e-06 deg
tp 2458697.860225651329
(2019-Aug-02.36022565)
2.8821e-05 TDB
period 1314.268877318129
3.60
5.3096e-06
1.454e-08
d
yr
n .2739165525509581 1.1066e-09 deg/d
Q 2.91121249260227 7.8408e-09 au
  Orbit Determination Parameters
   # obs. used (total)      922  
   data-arc span      11085 days (30.35 yr)  
   first obs. used      1990-08-16  
   last obs. used      2020-12-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46774  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:25:03  

Additional Information
 Earth MOID = .781759 au 
 Jupiter MOID = 2.55152 au 
 T_jup = 3.519 
[ 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 15.79   n/a E2021B55  

120457 (1990 QZ2)          Discovered 1990-Aug-28 by Holt, H. E. at Palomar
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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Alternate Designations
 1990 QZ2 = 2001 QF30 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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