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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1550633840221394 4.3318e-08  
a 3.160726670186917 2.7272e-08 AU
q 2.670613696738705 1.3575e-07 AU
i 3.549747174631484 7.0568e-06 deg
node 344.9308166636679 7.7398e-05 deg
peri 275.4720700646815 8.0936e-05 deg
M 63.22683663118407 2.2511e-05 deg
tp 2456640.022808022627
(2013-Dec-13.52280802)
0.00012859 JED
period 2052.479548658135
5.62
2.6565e-05
7.273e-08
d
yr
n .1753976063904558 2.2701e-09 deg/d
Q 3.650839643635129 3.1501e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1148  
   data-arc span      10314 days (28.24 yr)  
   first obs. used      1986-08-28  
   last obs. used      2014-11-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46459  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:05:49  

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
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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