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603 Timandra (A906 DG)
Classification: Main-belt Asteroid          SPK-ID: 2000603
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1737626582300152 3.0597e-08  
a 2.538248959273706 8.5511e-09 au
q 2.097196072860737 7.6263e-08 au
i 8.024786674592571 3.6598e-06 deg
node 343.4411877037566 3.0502e-05 deg
peri 159.7669806921122 3.3446e-05 deg
M 68.34394033732818 1.4793e-05 deg
tp 2458720.087567047527
(2019-Aug-24.58756705)
6.0597e-05 TDB
period 1477.06549204852
4.04
7.4642e-06
2.044e-08
d
yr
n .2437264982074163 1.2316e-09 deg/d
Q 2.979301845686674 1.0037e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2500  
   data-arc span      41809 days (114.47 yr)  
   first obs. used      1906-02-17  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36475  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:18:55  

Additional Information
 Earth MOID = 1.11129 au 
 Jupiter MOID = 2.03574 au 
 T_jup = 3.412 
[ 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 11.9   n/a MPO384749  
diameter diameter 13.73 km 0.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 4
rotation period rot_per 41.79 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2011) Minor Planet Bull. 38, 76-78.]
geometric albedo albedo 0.1354   0.019 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 4

603 Timandra (A906 DG)          Discovered 1906-Feb-16 by Metcalf, J. H. at Taunton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A906 DG = 1967 EJ = 1975 EA2 = 1977 RW7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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