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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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456957.5 (2014-Oct-27.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1744939562023741 8.1618e-09  
q 2.094969861572794 1.9193e-08 au
tp 2457243.775619275197
(2015-Aug-09.27561928)
3.2157e-05 TDB
node 343.4620417637796 8.7832e-06 deg
peri 159.9817168783497 1.138e-05 deg
i 8.026576985191211 4.1791e-07 deg
  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
 Jupiter MOID = 2.03382 au 
 T_jup = 3.412 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.661458865442279E-17 -1.475997224459667E-16 -3.048210697131922E-14 -3.005161487239743E-14 2.359814030249438E-14 -5.68026127347695E-17
q -1.475997224459667E-16 3.683790373582684E-16 5.260349428843723E-14 7.460257438381845E-14 -6.514344466355036E-14 1.19716460503325E-16
tp -3.048210697131922E-14 5.260349428843723E-14 1.034099525917378E-9 4.897226229796067E-11 2.348692027812943E-10 2.688649225806411E-12
node -3.005161487239743E-14 7.460257438381845E-14 4.897226229796067E-11 7.714418488484269E-11 -6.405367139463999E-11 1.101317730763154E-12
peri 2.359814030249438E-14 -6.514344466355036E-14 2.348692027812943E-10 -6.405367139463999E-11 1.295066859842363E-10 -3.469617314284754E-13
i -5.68026127347695E-17 1.19716460503325E-16 2.688649225806411E-12 1.101317730763154E-12 -3.469617314284754E-13 1.746466614884137E-13

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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1928-Jan-03 04:10 < 00:01 Ceres 0.0499139737918441 0.0499084994814527 0.0499194487270294 4.07368918412524 4.0736871064305 2425248.673282288 0.782247959314944 388.305253484452 33.0095658819296 45.9976643760268 161951.013645953 T 36 CATAB v2.0f-lin.ifort 2021-Apr-12 11:10:44 2021-Apr-12 11:10

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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