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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1723766992496487 7.7036e-08  
a 2.785971856072323 2.1832e-08 AU
q 2.305735223320158 2.0923e-07 AU
i 8.591173040393915 8.2812e-06 deg
node 167.9512034224206 3.827e-05 deg
peri 359.1919021477383 4.2582e-05 deg
M 240.3277546712339 1.9656e-05 deg
tp 2457565.117653591616
(2016-Jun-25.61765359)
9.65e-05 JED
period 1698.492033257796
4.65
1.9965e-05
5.466e-08
d
yr
n .2119527162629673 2.4914e-09 deg/d
Q 3.266208488824487 2.5596e-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 = 1.31353 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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