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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1550633657460126 4.6504e-08  
a 3.160726675974538 2.889e-08 AU
q 2.670613759394719 1.4913e-07 AU
i 3.549747302743294 7.2247e-06 deg
node 344.9307998863791 8.3015e-05 deg
peri 275.4720885187236 8.6388e-05 deg
M 63.22683282606715 2.3725e-05 deg
tp 2456640.022828726755
(2013-Dec-13.52282873)
0.000135 JED
period 2052.479554295592
5.62
2.814e-05
7.704e-08
d
yr
n .1753976059086988 2.4048e-09 deg/d
Q 3.650839592554356 3.337e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1086  
   data-arc span      10204 days (27.94 yr)  
   first obs. used      1986-08-28  
   last obs. used      2014-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .45674  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:14:58  

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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