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JPL Small-Body Database Browser
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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.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .20169569497195 3.6077e-08  
a 2.466987558095139 9.5264e-09 au
q 1.969406788077986 9.1814e-08 au
i 2.420981940250354 4.0956e-06 deg
node 15.13565586325453 0.00014267 deg
peri 3.781131482226563 0.00014372 deg
M 124.5000696448176 1.9796e-05 deg
tp 2458511.041404945352
7.6047e-05 TDB
period 1415.30116988981
n .2543628223157819 1.4734e-09 deg/d
Q 2.964568328112292 1.1448e-08 au
  Orbit Determination Parameters
   # obs. used (total)      517  
   data-arc span      10374 days (28.40 yr)  
   first obs. used      1991-09-08  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52118  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:33:53  

Additional Information
 Earth MOID = .971576 au 
 Jupiter MOID = 2.49822 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 16.2   n/a MPO454175  

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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2144-Mar-05 19:58 00:01 Hebe 0.0486974614692501 0.0486846206788167 0.04871031049278 4.84035378605742 4.84035375968354 2504204.331683182 1.21337303927283 1186.77363244843 31.3635579386137 -57.3822865397886 195584.912110777 T 17 CATAB v2.0f-lin.ifort 2020-Feb-24 16:33:58 2020-Feb-24 16:34
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Mar-29 19:44 UT
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