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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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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 86 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3558717992926644 6.9277e-08  
a 1.079857375676636 1.0314e-09 AU
q .6955665884151367 7.4634e-08 AU
i 10.30927505957688 6.6943e-06 deg
node 234.4640462390907 1.202e-05 deg
peri 289.4086266868395 1.4417e-05 deg
M 41.30152735887513 7.6312e-06 deg
tp 2456953.476858813223
(2014-Oct-22.97685881)
8.6503e-06 JED
period 409.8717870684798
1.12
5.8722e-07
1.608e-09
d
yr
n .878323444935849 1.2584e-09 deg/d
Q 1.464148162938135 1.3984e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      431  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      7576 days (20.74 yr)  
   first obs. used      1989-10-25  
   last obs. used      2010-07-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51823  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 20:06:51  

Additional Information
 Earth MOID = .0341257 AU 
 T_jup = 5.656 
[ 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 18.4 mag n/a PDS3 (MPC 35833)  
rotation period rot_per 73.0 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Incomplete or inconclusive result.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (1998) http://www.asu.cas.cz/~ppravec/neo.htm]
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 ]
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