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171588 Naprstek (1999 WG1)
Classification: Main-belt Asteroid          SPK-ID: 2171588
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2018925269115217 3.5654e-08  
a 2.466567011276411 9.4364e-09 au
q 1.968585564573217 9.0621e-08 au
i 2.421262031953619 4.0716e-06 deg
node 15.13348475597473 0.00014092 deg
peri 3.764750460242705 0.00014198 deg
M 175.3945326557683 1.996e-05 deg
tp 2458511.131625445621
(2019-Jan-27.63162545)
7.5942e-05 TDB
period 1414.939286201375
3.87
8.1197e-06
2.223e-08
d
yr
n .2544278779384776 1.4601e-09 deg/d
Q 2.964548457979606 1.1342e-08 au
  Orbit Determination Parameters
   # obs. used (total)      530  
   data-arc span      10423 days (28.54 yr)  
   first obs. used      1991-09-08  
   last obs. used      2020-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51716  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:41:03  

Additional Information
 Earth MOID = .969383 au 
 Jupiter MOID = 2.49941 au 
 T_jup = 3.457 
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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 16.27   n/a E2021B55  

171588 Náprstek           Discovered 1999 Nov. 26 by J. Ticha and M. Tichy at Klet.
Vojta Náprstek (1826-1894) was a Czech philanthropist and advocate of progressive ideas. In 1865, after living in Wisconsin for a decade, he founded the American Club of Bohemian Women in Prague, offering lectures on various topics. He also co-founded the Czech Tourist Club in 1888.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120703/MPCPages.arcLast Updated: 2012-07-09

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