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21345 (1997 ED3)
Classification: Main-belt Asteroid          SPK-ID: 2021345
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1169636836113193 6.6734e-08  
a 2.646635212534324 2.2574e-08 au
q 2.337075008900883 1.7089e-07 au
i 12.5549944820628 6.6756e-06 deg
node 120.4445486370046 3.2764e-05 deg
peri 40.57988728369737 4.5849e-05 deg
M 221.0035142767331 3.4482e-05 deg
tp 2458207.712740941361
(2018-Mar-30.21274094)
0.00015438 JED
period 1572.677075980914
4.31
2.0121e-05
5.509e-08
d
yr
n .228909040195337 2.9287e-09 deg/d
Q 2.956195416167766 2.5215e-08 au
  Orbit Determination Parameters
   # obs. used (total)      662  
   data-arc span      8663 days (23.72 yr)  
   first obs. used      1992-01-26  
   last obs. used      2015-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50052  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 19:32:35  

Additional Information
 Earth MOID = 1.36079 au 
 Jupiter MOID = 2.09192 au 
 T_jup = 3.349 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4 mag n/a MPO344470  

21345 (1997 ED3)          Discovered 1997-Mar-03 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 ED3 = 1992 BB3 = 1999 VW87 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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