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3988 (1986 LA)
Classification: Amor [NEO]          SPK-ID: 2003988
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 107 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3166237636593228 3.2107e-08  
a 1.544631078268024 2.0237e-09 AU
q 1.055564172801644 4.9353e-08 AU
i 10.76565754486461 6.1841e-06 deg
node 229.8621418615683 1.9873e-05 deg
peri 86.83690462822564 2.584e-05 deg
M 165.1193351822117 7.7954e-06 deg
tp 2456478.888914058916
(2013-Jul-05.38891406)
1.5059e-05 JED
period 701.1897838071199
1.92
1.378e-06
3.773e-09
d
yr
n .5134130706317125 1.009e-09 deg/d
Q 2.033697983734403 2.6645e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      466  
   data-arc span      10098 days (27.65 yr)  
   first obs. used      1986-06-04  
   last obs. used      2014-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53761  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Feb-19 17:58:53  

Additional Information
 Earth MOID = .177552 AU 
 T_jup = 4.384 
[ 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 17.8 mag n/a MPO267723  
diameter diameter 0.7 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed medium albedo (0.15)
rotation period rot_per 10.4 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Skiff, B.A. (2011) Posting on CALL web site. http://www.minorplanet.info/call.html]

3988 (1986 LA)          Discovered 1986-Jun-04 by Helin, E. F. at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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