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6468 Welzenbach (1981 ED19)
Classification: Main-belt Asteroid          SPK-ID: 2006468
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0733676740070168 3.6405e-08  
a 2.674536334734104 1.0799e-08 au
q 2.478311824807411 9.6414e-08 au
i 2.307788080377347 4.3408e-06 deg
node 167.6474771922507 8.119e-05 deg
peri 143.3880493260543 8.6488e-05 deg
M 216.8671883086026 3.2419e-05 deg
tp 2459635.696186747991
(2022-Feb-25.19618675)
0.00014551 TDB
period 1597.611508689593
4.37
9.6764e-06
2.649e-08
d
yr
n .2253363837465607 1.3648e-09 deg/d
Q 2.870760844660798 1.1592e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2277  
   data-arc span      25605 days (70.10 yr)  
   first obs. used      1950-03-22  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47117  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:34:08  

Additional Information
 Earth MOID = 1.46443 au 
 Jupiter MOID = 2.30274 au 
 T_jup = 3.374 
[ show covariance matrix ]

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 13.1   n/a MPO381312  
diameter diameter 6.735 km 0.195 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.295   0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6468 Welzenbach           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
Linda C. Welzenbach (b. 1966) is collections manager in the Division of Meteorites at the Smithsonian Institution. She plays an essential role in the meteoritics community through her daily management of the National Meteorite Collection, providing research material to scientists and classifying Antarctic meteorites.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030106/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1981 ED19 = 1987 SH6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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