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7057 (1990 QL2)
Classification: Main-belt Asteroid          SPK-ID: 2007057
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1295926766390033 5.3577e-08  
a 2.261992828636908 1.3572e-08 AU
q 1.96885512343562 1.2107e-07 AU
i 5.123600933564341 6.4045e-06 deg
node 160.0182414634149 5.6843e-05 deg
peri 224.5732583578647 6.1629e-05 deg
M 17.80445251431844 2.4697e-05 deg
tp 2456939.044411001221
(2014-Oct-08.54441100)
8.5102e-05 JED
period 1242.611196371706
3.40
1.1183e-05
3.062e-08
d
yr
n .289712503034869 2.6074e-09 deg/d
Q 2.555130533838195 1.5331e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1165  
   data-arc span      8736 days (23.92 yr)  
   first obs. used      1990-08-22  
   last obs. used      2014-07-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53283  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:09:45  

Additional Information
 Earth MOID = .975531 AU 
 T_jup = 3.603 
[ 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 13.6 mag n/a MPO263412  

7057 (1990 QL2)          Discovered 1990-Aug-22 by Holt, H. E. at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1990 QL2 = 1992 EK 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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