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9338 (1991 FL4)
Classification: Main-belt Asteroid          SPK-ID: 2009338
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1995402640089443 3.4795e-08  
a 3.120138451604729 1.722e-08 au
q 2.497545201227062 1.1314e-07 au
i 13.74068361546433 5.0197e-06 deg
node 182.0447691824878 1.8024e-05 deg
peri 104.4171526191627 2.2371e-05 deg
M 318.0863576543321 1.3489e-05 deg
tp 2458834.875454758749
(2019-Dec-17.37545476)
7.5815e-05 TDB
period 2013.071615616107
5.51
1.6666e-05
4.563e-08
d
yr
n .1788311936879707 1.4805e-09 deg/d
Q 3.742731701982395 2.0657e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1936  
   data-arc span      11717 days (32.08 yr)  
   first obs. used      1987-09-21  
   last obs. used      2019-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47011  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:16:29  

Additional Information
 Earth MOID = 1.52509 au 
 Jupiter MOID = 1.73466 au 
 T_jup = 3.142 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.4   n/a MPO347599  
diameter diameter 22.697 km 3.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.041   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

9338 (1991 FL4)          Discovered 1991-Mar-25 by Debehogne, H. at La Silla
Reference: 19981005/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1991 FL4 = 1987 SG6 = 1992 PY4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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