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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1295926761150696 5.3569e-08  
a 2.261992822910175 1.2615e-08 AU
q 1.968855119636165 1.2092e-07 AU
i 5.123600274957327 6.33e-06 deg
node 160.0182494786836 5.5619e-05 deg
peri 224.5732428312042 6.0116e-05 deg
M 17.80446421955052 2.2488e-05 deg
tp 2456939.044370831680
(2014-Oct-08.54437083)
7.7555e-05 JED
period 1242.611191652791
3.40
1.0395e-05
2.846e-08
d
yr
n .2897125041350753 2.4235e-09 deg/d
Q 2.555130526184186 1.425e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1178  
   data-arc span      8789 days (24.06 yr)  
   first obs. used      1990-08-22  
   last obs. used      2014-09-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53439  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:08:58  

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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