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JPL Small-Body Database Browser
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100338 (1995 ST39)
Classification: Main-belt Asteroid          SPK-ID: 2100338
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08241426857071044 4.3363e-08  
a 2.920046375871936 2.5537e-08 au
q 2.679392889611897 1.2911e-07 au
i 10.63117746799855 1.4352e-05 deg
node 352.2059506051626 2.6164e-05 deg
peri 94.41241860517688 9.6499e-05 deg
M 250.0942427138233 9.3642e-05 deg
tp 2459556.917771488950
(2021-Dec-08.41777149)
0.00047362 TDB
period 1822.565101975925
4.99
2.3909e-05
6.546e-08
d
yr
n .1975238084004284 2.5912e-09 deg/d
Q 3.160699862131976 2.7642e-08 au
  Orbit Determination Parameters
   # obs. used (total)      421  
   data-arc span      8295 days (22.71 yr)  
   first obs. used      1995-09-20  
   last obs. used      2018-06-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62367  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:04:31  

Additional Information
 Earth MOID = 1.72207 au 
 Jupiter MOID = 2.01301 au 
 T_jup = 3.249 
[ show covariance matrix ]

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 15.2   n/a MPO426630  

100338 (1995 ST39)          Discovered 1995-Sep-25 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1995 ST39 = 1998 FG145 = 2001 XW39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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