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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1188867916718825 4.3833e-08  
a 2.644810077099462 1.1666e-08 au
q 2.330377092451643 1.1805e-07 au
i 12.56877992062735 3.8887e-06 deg
node 120.3852847085883 2.0461e-05 deg
peri 40.57862152437686 2.5034e-05 deg
M 272.3008188870616 1.6325e-05 deg
tp 2459779.221800160471
(2022-Jul-18.72180016)
7.2466e-05 TDB
period 1571.050565230908
4.30
1.0394e-05
2.846e-08
d
yr
n .2291460300306046 1.5161e-09 deg/d
Q 2.959243061747282 1.3053e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1357  
   data-arc span      10610 days (29.05 yr)  
   first obs. used      1992-01-26  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48772  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:14:19  

Additional Information
 Earth MOID = 1.35597 au 
 Jupiter MOID = 2.08289 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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