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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1550633790735935 4.3509e-08  
a 3.160726668387419 2.7365e-08 AU
q 2.670613710859245 1.3665e-07 AU
i 3.54974869121494 7.0463e-06 deg
node 344.9308213284154 7.8031e-05 deg
peri 275.4720636471861 8.1545e-05 deg
M 63.2268389051605 2.2525e-05 deg
tp 2456640.022795365778
(2013-Dec-13.52279537)
0.00012865 JED
period 2052.479546905327
5.62
2.6655e-05
7.298e-08
d
yr
n .1753976065402446 2.2778e-09 deg/d
Q 3.650839625915594 3.1608e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1124  
   data-arc span      10242 days (28.04 yr)  
   first obs. used      1986-08-28  
   last obs. used      2014-09-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46478  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:15:33  

Additional Information
 Earth MOID = 1.65987 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 12.6 mag n/a MPO302124  

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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