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11866 (1989 SL12)
Classification: Main-belt Asteroid          SPK-ID: 2011866
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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .16069824092011 5.4055e-08  
a 2.896027660728184 3.3131e-08 AU
q 2.430641109993184 1.6088e-07 AU
i .8328453406334578 6.9774e-06 deg
node 309.8823858577544 0.00051962 deg
peri 134.8587707652828 0.0005205 deg
M 296.9036454513841 3.0823e-05 deg
tp 2457116.003551803438
(2015-Apr-03.50355180)
0.00015674 JED
period 1800.124261722967
4.93
3.0891e-05
8.457e-08
d
yr
n .1999861940949734 3.4319e-09 deg/d
Q 3.361414211463184 3.8456e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      879  
   data-arc span      11952 days (32.72 yr)  
   first obs. used      1981-02-06  
   last obs. used      2013-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47996  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 20:12:53  

Additional Information
 Earth MOID = 1.44617 AU 
 T_jup = 3.269 
[ 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 13.8 mag n/a MPO266021  

11866 (1989 SL12)          Discovered 1989-Sep-30 by Debehogne, H. at La Silla (809)
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1989 SL12 = 1981 CC = 1991 BD3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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