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8146 Jimbell (1983 WG)
Classification: Main-belt Asteroid          SPK-ID: 2008146
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

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 two-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 is not working, here are some notes that might help.
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2196369453732223 4.7706e-08  
a 2.802381027122732 1.622e-08 au
q 2.186874618553622 1.3334e-07 au
i 11.2996191410724 6.4318e-06 deg
node 76.77744498879211 3.0046e-05 deg
peri 29.42090884907608 3.3895e-05 deg
M 250.9340319536101 1.5634e-05 deg
tp 2459519.629801003058
7.6392e-05 TDB
period 1713.520098969926
n .2100938297814027 1.824e-09 deg/d
Q 3.417887435691842 1.9782e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1311  
   data-arc span      22215 days (60.82 yr)  
   first obs. used      1958-07-12  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47494  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:33:32  

Additional Information
 Earth MOID = 1.21104 au 
 Jupiter MOID = 1.80072 au 
 T_jup = 3.261 
[ 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 12.9   n/a MPO448995  
diameter diameter 19.073 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 5.3631 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2016) Observatoire de Geneve web site,]
geometric albedo albedo 0.034   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

8146 Jimbell           Discovered 1983 Nov. 28 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
Named in honor of James F. Bell III (b. 1965), planetary scientist at Cornell University. Bell is noted for his interpretation of reflectance spectra of solar-system objects. He has made important contributions to the identification of minerals on the surface of Mars and has played a key role in NEAR's investigation of (253) Mathilde and (433) Eros.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990728/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 1983 WG = 1980 DM1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Jul-05 08:19 UT
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