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

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1188506312262396 4.3834e-08  
a 2.644530762801452 1.1698e-08 au
q 2.330226612345291 1.1801e-07 au
i 12.56881357258183 3.8908e-06 deg
node 120.385101826511 2.0463e-05 deg
peri 40.64229449777296 2.504e-05 deg
M 227.309949010492 1.6194e-05 deg
tp 2459779.471548145299
(2022-Jul-18.97154815)		 7.2483e-05 TDB
period 1570.801697474579
4.30		 1.0422e-05
2.853e-08		 d
yr
n .2291823344593922 1.5206e-09 deg/d
Q 2.958834913257614 1.3088e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1349  
   data-arc span      10574 days (28.95 yr)  
   first obs. used      1992-01-26  
   last obs. used      2021-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48687  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:52:07  

Additional Information
 Earth MOID = 1.35493 au 
 Jupiter MOID = 2.08376 au 
 T_jup = 3.349 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.38   n/a E2021B10  
diameter diameter 8.078 km 0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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