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9557 (1986 QL2)
Classification: Main-belt Asteroid          SPK-ID: 2009557
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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1550280938971869 5.9965e-08  
a 3.160950828520642 3.3555e-08 AU
q 2.670914646672353 2.0183e-07 AU
i 3.5495550640758 8.2472e-06 deg
node 344.932714198282 9.1973e-05 deg
peri 275.5142295074738 9.5963e-05 deg
M 28.11576080293536 3.152e-05 deg
tp 2456640.185658294319
(2013-Dec-13.68565829)
0.00017867 JED
period 2052.697894912377
5.62
3.2686e-05
8.949e-08
d
yr
n .1753789492804869 2.7926e-09 deg/d
Q 3.65098701036893 3.8757e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1048  
   data-arc span      9806 days (26.85 yr)  
   first obs. used      1986-08-28  
   last obs. used      2013-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48426  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-26 19:26:06  

Additional Information
 Earth MOID = 1.65842 AU 
 T_jup = 3.183 
[ 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 12.5 mag n/a MPO267746  

9557 (1986 QL2)          Discovered 1986-Aug-28 by Debehogne, H. at La Silla (809)
Reference: 19981110/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1986 QL2 = 1996 GW1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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