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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1737626590896115 3.0502e-08  
a 2.538248959106794 8.5443e-09 au
q 2.097196070540959 7.5993e-08 au
i 8.024786594654014 3.6434e-06 deg
node 343.4411876314228 3.0501e-05 deg
peri 159.7669807626406 3.3444e-05 deg
M 68.34394046957303 1.479e-05 deg
tp 2458720.087566532591
(2019-Aug-24.58756653)
6.0582e-05 TDB
period 1477.065491902825
4.04
7.4582e-06
2.042e-08
d
yr
n .243726498231457 1.2307e-09 deg/d
Q 2.979301847672629 1.0029e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2536  
   data-arc span      41841 days (114.55 yr)  
   first obs. used      1906-02-17  
   last obs. used      2020-09-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36276  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:27:49  

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 11.97   n/a E2021B10  
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. 2020-October); 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

[ show close-approach data ]
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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