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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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456936.5 (2014-Oct-06.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .174484970243551 3.0513e-08  
q 2.094989570113589 7.6106e-08 au
tp 2457243.777289045235
(2015-Aug-09.27728905)
6.0299e-05 TDB
node 343.4621274831225 3.0498e-05 deg
peri 159.9811609434902 3.3417e-05 deg
i 8.026580205900384 3.6434e-06 deg
  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
 Jupiter MOID = 2.03574 au 
 T_jup = 3.412 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.310567024647004E-16 -2.312764642641771E-15 -9.044320439052786E-14 2.510864808859042E-15 -1.896291944100726E-14 -4.216078338155306E-16
q -2.312764642641771E-15 5.792175620722589E-15 1.976588498965692E-13 -7.405041838175404E-15 3.89821073030254E-14 1.024171728136033E-15
tp -9.044320439052786E-14 1.976588498965692E-13 3.63597384809809E-9 1.294532001052796E-11 8.461743896650834E-10 2.662332332494681E-12
node 2.510864808859042E-15 -7.405041838175404E-15 1.294532001052796E-11 9.301020090749839E-10 -9.178064662381776E-10 1.86430974138432E-11
peri -1.896291944100726E-14 3.89821073030254E-14 8.461743896650834E-10 -9.178064662381776E-10 1.116695258848762E-9 -1.786692726046515E-11
i -4.216078338155306E-16 1.024171728136033E-15 2.662332332494681E-12 1.86430974138432E-11 -1.786692726046515E-11 1.327462899320919E-11

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

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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 34 CATAB v2.0f-lin.ifort 2020-Nov-13 04:27:55 2020-Nov-13 04:27

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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