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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1295926753171771 5.3424e-08  
a 2.261992825359852 1.1297e-08 AU
q 1.968855123573209 1.2016e-07 AU
i 5.123601321738759 5.7461e-06 deg
node 160.018249343876 5.4766e-05 deg
peri 224.5732462496225 5.8808e-05 deg
M 17.80445917441354 1.9318e-05 deg
tp 2456939.044388146136
(2014-Oct-08.54438815)
6.6736e-05 JED
period 1242.611193671362
3.40
9.3087e-06
2.549e-08
d
yr
n .2897125036644492 2.1703e-09 deg/d
Q 2.555130527146495 1.2761e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1238  
   data-arc span      8884 days (24.32 yr)  
   first obs. used      1990-08-22  
   last obs. used      2014-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52827  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:19:37  

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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