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8139 Paulabell (1980 UM1)
Classification: Main-belt Asteroid          SPK-ID: 2008139
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09899413511496963 6.1128e-08  
a 2.250646283187341 1.2764e-08 au
q 2.027845500933489 1.3739e-07 au
i 4.841643975950451 6.8291e-06 deg
node 269.32780486057 7.729e-05 deg
peri 174.7474018167378 8.5949e-05 deg
M 169.7161775765923 3.6566e-05 deg
tp 2457019.093294370812
0.00012506 JED
period 1233.273203622845
n .2919061234302904 2.4833e-09 deg/d
Q 2.473447065441193 1.4028e-08 au
  Orbit Determination Parameters
   # obs. used (total)      964  
   data-arc span      22787 days (62.39 yr)  
   first obs. used      1953-10-12  
   last obs. used      2016-03-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47795  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 15:59:02  

Additional Information
 Earth MOID = 1.04235 au 
 Jupiter MOID = 2.70167 au 
 T_jup = 3.616 
[ 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 14.4 mag n/a MPO337324  

8139 Paulabell           Discovered 1980 Oct. 31 by S. J. Bus at Palomar.
Paul A. Abell (b. 1965) is lead scientist for small bodies in the Astromaterials Research and Exploration Science Directorate at the NASA Johnson Space Center. His research includes characterization of minor-planet compositions and scientific planning for human exploration of minor planets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120506/MPCPages.arcLast Updated: 2012-05-09

[ show close-approach data ]
Alternate Designations
 1980 UM1 = 1970 WH1 = 1987 XA1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-04 01:52 UT
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