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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1737626570112319 3.0917e-08  
a 2.538248959467896 8.5733e-09 au
q 2.097196076114759 7.7167e-08 au
i 8.024786589715003 3.7035e-06 deg
node 343.4411877973096 3.0508e-05 deg
peri 159.7669806945614 3.3458e-05 deg
M 68.34394007705708 1.4838e-05 deg
tp 2458720.087568083229
(2019-Aug-24.58756808)
6.0771e-05 TDB
period 1477.065492218025
4.04
7.4835e-06
2.049e-08
d
yr
n .2437264981794466 1.2348e-09 deg/d
Q 2.979301842821032 1.0063e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2433  
   data-arc span      41759 days (114.33 yr)  
   first obs. used      1906-02-17  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36867  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:17:04  

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

[ 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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