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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1170102598299436 6.9357e-08  
a 2.646111953691728 2.37e-08 AU
q 2.336489706451139 1.7972e-07 AU
i 12.55682966395583 6.9263e-06 deg
node 120.4504509282088 4.6923e-05 deg
peri 40.39346056183138 6.5359e-05 deg
M 83.86094048795897 4.3616e-05 deg
tp 2456634.258143506063
(2013-Dec-07.75814351)
0.00018981 JED
period 1572.210704657532
4.30
2.1122e-05
5.783e-08
d
yr
n .228976942424786 3.0762e-09 deg/d
Q 2.955734200932317 2.6473e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      564  
   data-arc span      8198 days (22.44 yr)  
   first obs. used      1992-01-26  
   last obs. used      2014-07-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52172  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:35:52  

Additional Information
 Earth MOID = 1.3618 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 14.2 mag n/a MPO257019  

21345 (1997 ED3)          Discovered 1997-Mar-03 by Beijing Schmidt CCD Asteroid Program at Xinglong (327)
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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