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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1735849125549093 8.1558e-09  
a 2.539349275201235 8.3129e-09 au
q 2.098556553319056 1.9125e-08 au
i 8.025062307798351 4.1797e-07 deg
node 343.4254366364623 8.7812e-06 deg
peri 159.9257519973351 1.1427e-05 deg
M 116.9362165288723 8.0127e-06 deg
tp 2458720.403406614606
(2019-Aug-24.90340661)
3.2506e-05 TDB
period 1478.026044874368
4.05
7.2577e-06
1.987e-08
d
yr
n .2435681030442194 1.196e-09 deg/d
Q 2.980141997083414 9.7558e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2569  
   data-arc span      41841 days (114.55 yr)  
   first obs. used      1906-02-17  
   last obs. used      2020-09-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36143  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:09:46  

Additional Information
 Earth MOID = 1.11246 au 
 Jupiter MOID = 2.03382 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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