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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1739849942881224 4.1172e-08  
a 2.538624624937534 9.5819e-09 au
q 2.09694203406809 1.0588e-07 au
i 8.024229984470928 4.0943e-06 deg
node 343.4445103372611 3.2359e-05 deg
peri 159.7370929007507 3.5803e-05 deg
M 330.8740466367944 1.7725e-05 deg
tp 2458720.029143779134
(2019-Aug-24.52914378)
7.2935e-05 TDB
period 1477.393416925815
4.04
8.3645e-06
2.29e-08
d
yr
n .2436724002392634 1.3796e-09 deg/d
Q 2.980307215806978 1.1249e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2119  
   data-arc span      41347 days (113.20 yr)  
   first obs. used      1906-02-17  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38286  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:10:39  

Additional Information
 Earth MOID = 1.11152 au 
 Jupiter MOID = 2.03637 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-January); 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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