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5556 (1988 AL)
Classification: Main-belt Asteroid          SPK-ID: 2005556
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1722048038825432 7.7023e-08  
a 2.786429386702095 2.1863e-08 AU
q 2.306592860632506 2.0922e-07 AU
i 8.590487854148629 8.2806e-06 deg
node 167.9488740890666 3.8272e-05 deg
peri 359.1674170291151 4.2593e-05 deg
M 197.9660476172236 1.9411e-05 deg
tp 2457565.169933473258
(2016-Jun-25.66993347)
9.6616e-05 JED
period 1698.910456742238
4.65
1.9995e-05
5.474e-08
d
yr
n .2119005145746889 2.4939e-09 deg/d
Q 3.266265912771685 2.5628e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      857  
   data-arc span      22871 days (62.62 yr)  
   first obs. used      1951-03-06  
   last obs. used      2013-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48629  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 18:13:27  

Additional Information
 Earth MOID = 1.31388 AU 
 T_jup = 3.293 
[ 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 13.5 mag n/a MPO267730  

5556 (1988 AL)          Discovered 1988-Jan-15 by Ueda and Kaneda at Kushiro (399)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1988 AL = 1951 EC 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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