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

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2412994804739265 7.5486e-08  
a 2.346805797149619 1.4055e-08 AU
q 1.780522777524217 1.8003e-07 AU
i 2.142510364007951 8.0597e-06 deg
node 352.931414811467 0.00017672 deg
peri 12.13725158839086 0.00017783 deg
M 200.3873426609351 1.7707e-05 deg
tp 2457382.709091263376
(2015-Dec-26.20909126)
6.8377e-05 JED
period 1313.149447850946
3.60
1.1796e-05
3.23e-08
d
yr
n .2741500600629755 2.4628e-09 deg/d
Q 2.913088816775022 1.7446e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      445  
   data-arc span      8632 days (23.63 yr)  
   first obs. used      1990-08-16  
   last obs. used      2014-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56034  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 15:58:23  

Additional Information
 Earth MOID = .777342 AU 
 T_jup = 3.520 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7 mag n/a MPO264156  

120457 (1990 QZ2)          Discovered 1990-Aug-28 by Holt, H. E. at Palomar (675)
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1990 QZ2 = 2001 QF30 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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