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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1297013450659263 5.6937e-08  
a 2.262292727631161 1.3998e-08 AU
q 1.968870317924536 1.2852e-07 AU
i 5.123417731819362 6.7971e-06 deg
node 160.0173831858208 5.8952e-05 deg
peri 224.5491434940152 6.4014e-05 deg
M 319.8895396414326 2.588e-05 deg
tp 2456938.976721149234
(2014-Oct-08.47672115)
8.9792e-05 JED
period 1242.858325934822
3.40
1.1536e-05
3.158e-08
d
yr
n .2896548966908389 2.6885e-09 deg/d
Q 2.555715137337786 1.5814e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1150  
   data-arc span      8399 days (23.00 yr)  
   first obs. used      1990-08-22  
   last obs. used      2013-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55702  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Sep-23 22:36:28  

Additional Information
 Earth MOID = .974311 AU 
 T_jup = 3.602 
[ 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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