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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1295926803848651 5.3117e-08  
a 2.261992822871895 1.1e-08 AU
q 1.968855109944599 1.1921e-07 AU
i 5.123599855670395 5.3654e-06 deg
node 160.0182473343981 5.4739e-05 deg
peri 224.5732446945786 5.8674e-05 deg
M 17.80446447661254 1.8555e-05 deg
tp 2456939.044369945940
(2014-Oct-08.54436995)
6.4136e-05 JED
period 1242.611191621247
3.40
9.0643e-06
2.482e-08
d
yr
n .2897125041424297 2.1133e-09 deg/d
Q 2.555130535799191 1.2426e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1378  
   data-arc span      8948 days (24.50 yr)  
   first obs. used      1990-08-22  
   last obs. used      2015-02-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50548  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:06:59  

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
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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