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

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1604243924475371 3.0351e-08  
a 2.254940310024738 6.2393e-09 au
q 1.893192880783558 6.9141e-08 au
i 3.651706160580398 3.3433e-06 deg
node 72.38561346226692 6.4477e-05 deg
peri 344.2767713697028 6.568e-05 deg
M 248.7876660976638 1.3303e-05 deg
tp 2459778.577493832041
(2022-Jul-18.07749383)
4.6392e-05 TDB
period 1236.80434492388
3.39
5.1332e-06
1.405e-08
d
yr
n .2910727161313105 1.2081e-09 deg/d
Q 2.616687739265917 7.2402e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1293  
   data-arc span      14484 days (39.66 yr)  
   first obs. used      1981-10-24  
   last obs. used      2021-06-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52489  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 16:10:13  

Additional Information
 Earth MOID = .905071 au 
 Jupiter MOID = 2.7123 au 
 T_jup = 3.604 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.51   n/a E2021B10  
diameter diameter 4.586 km 0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 27.1793 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.070   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

Alternate Designations
 1996 BW4 = 1981 UX23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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