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20673 Janelle (1999 VW)
Classification: Main-belt Asteroid          SPK-ID: 2020673
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .103791405499943 6.8267e-08  
a 2.977370800697366 1.9054e-08 au
q 2.668345300598495 2.0889e-07 au
i 10.34880351040977 5.182e-06 deg
node 52.27977723519724 2.9689e-05 deg
peri 303.3277027907055 3.528e-05 deg
M 48.53560127061591 1.8126e-05 deg
tp 2458747.508617920867
(2019-Sep-21.00861792)
9.484e-05 TDB
period 1876.496739798858
5.14
1.8013e-05
4.932e-08
d
yr
n .1918468560934396 1.8416e-09 deg/d
Q 3.286396300796236 2.1031e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1130  
   data-arc span      13336 days (36.51 yr)  
   first obs. used      1983-07-16  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53307  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:11:20  

Additional Information
 Earth MOID = 1.6823 au 
 Jupiter MOID = 2.2075 au 
 T_jup = 3.228 
[ 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 14.0   n/a MPO324500  
diameter diameter 6.015 km 0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.147   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20673 Janelle           Discovered 1999 Nov. 3 by G. Bell at Farpoint Observatory.
Janelle Burgardt (b. 1954), secretary and past president of the North East Kansas Amateur Astronomer's League, has for several years been one of the driving forces behind the success and growth of the organization.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1999 VW = 1987 KR4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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