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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 ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2412994799503763 7.6235e-08  
a 2.346805799016227 1.829e-08 AU
q 1.780522780169084 1.844e-07 AU
i 2.142509133011784 7.6416e-06 deg
node 352.9312489675958 0.00016696 deg
peri 12.1373998793015 0.00016796 deg
M 200.3873521854486 1.8725e-05 deg
tp 2457382.709057216023
(2015-Dec-26.20905722)
7.3689e-05 JED
period 1313.14944941763
3.60
1.5351e-05
4.203e-08
d
yr
n .2741500597358944 3.2049e-09 deg/d
Q 2.91308881786337 2.2703e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      457  
   data-arc span      8657 days (23.70 yr)  
   first obs. used      1990-08-16  
   last obs. used      2014-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52369  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 02:03:44  

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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