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9793 Torvalds (1996 BW4)
Classification: Main-belt Asteroid          SPK-ID: 2009793
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1596835814068718 4.769e-08  
a 2.255213856218792 1.003e-08 au
q 1.895093230819373 1.0641e-07 au
i 3.651027446623444 5.3368e-06 deg
node 72.42300292597912 8.8754e-05 deg
peri 344.3915612435368 9.074e-05 deg
M 85.77111622211518 1.821e-05 deg
tp 2457305.773908383734
6.2422e-05 JED
period 1237.029406345752
n .291019759233904 1.9415e-09 deg/d
Q 2.61533448161821 1.1632e-08 au
  Orbit Determination Parameters
   # obs. used (total)      762  
   data-arc span      12550 days (34.36 yr)  
   first obs. used      1981-10-24  
   last obs. used      2016-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56767  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 16:04:38  

Additional Information
 Earth MOID = .90579 au 
 Jupiter MOID = 2.71636 au 
 T_jup = 3.604 
[ 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 15.5 mag n/a MPO358725  

9793 Torvalds           Discovered 1996 Jan. 16 by Spacewatch at Kitt Peak.
Finnish computer scientist Linus Torvalds (b. 1969) created the Linux computer operating system used by Spacewatch and several other asteroid surveys for their data collection and analysis. The development of Linux involved a large Internet collaboration and demonstrates the possibilities of the free exchange of information.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001111/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1996 BW4 = 1981 UX23 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-02 03:38 UT
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