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5492 Thoma (3227 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2005492
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1372864679910375 5.6152e-08  
a 2.782162651093302 1.4354e-08 au
q 2.400209367348121 1.5308e-07 au
i 17.61927326744196 5.9527e-06 deg
node 191.2939477514726 1.6662e-05 deg
peri 191.3256323739685 2.6133e-05 deg
M 77.93271803707758 1.8695e-05 deg
tp 2457233.564674861282
8.7638e-05 JED
period 1695.00975170777
n .2123881586151879 1.6437e-09 deg/d
Q 3.164115934838482 1.6325e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1359  
   data-arc span      20614 days (56.44 yr)  
   first obs. used      1959-10-05  
   last obs. used      2016-03-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49339  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 15:49:03  

Additional Information
 Earth MOID = 1.403 au 
 Jupiter MOID = 2.29406 au 
 T_jup = 3.251 
[ 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 12.4 mag n/a MPO365314  
rotation period rot_per 3.315 h n/a LCDB (Rev. 2016-February); 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:
[Klinglesmith, D.A., III; DeHart, A.; Hanowell, J.; Warrern, C.A. (2015) Minor Planet Bul. 42, 12-13.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]
SMASSII spectral type spec_B L   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)

5492 Thoma (3227 T-1)          Discovered 1971-Mar-26 by van Houten and Gehrels at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 3227 T-1 = 1959 TK = 1987 SM27 = 1987 UM8 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-04 23:06 UT
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