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11500 Tomaiyowit (1989 UR)
Classification: Apollo [NEO, PHA]          SPK-ID: 2011500
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 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3558148360449594 6.9311e-08  
a 1.079766148633 9.5359e-10 au
q .6955693334902518 7.4648e-08 au
i 10.30938475357388 6.6704e-06 deg
node 234.4509661166243 1.2015e-05 deg
peri 289.4370581556045 1.4412e-05 deg
M 208.3025637648062 8.0477e-06 deg
tp 2457773.190612177870
9.2965e-06 JED
period 409.8198488183145
n .878434758682464 1.1637e-09 deg/d
Q 1.463962963775749 1.2929e-09 au
  Orbit Determination Parameters
   # obs. used (total)      433  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      9403 days (25.74 yr)  
   first obs. used      1989-10-25  
   last obs. used      2015-07-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51936  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:33:14  

Additional Information
 Earth MOID = .033656 au 
 Jupiter MOID = 3.54941 au 
 T_jup = 5.657 
[ 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 18.3 mag n/a MPO344394  
rotation period rot_per 73.0 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Incomplete or inconclusive result.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (1998)]
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

11500 Tomaiyowit           Discovered 1989 Oct. 28 by J. E. Mueller and J. D. Mendenhall at Palomar.
Tomaiyowit is Earth Mother in the Luiseno creation story. She, together with Tukmit, gave birth to the First People, which are all things and features of the earth forming the basis of Luiseno existence.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20081113/MPCPages.arcLast Updated: 2008-11-17

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-05 14:15 UT
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