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85516 Vaclik (1997 VF)
Classification: Main-belt Asteroid          SPK-ID: 2085516
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2443860297012714 7.068e-08  
a 2.348546296500823 9.1845e-09 au
q 1.774594391529362 1.6349e-07 au
i 5.770816946587209 6.3093e-06 deg
node 60.31321373441042 4.9421e-05 deg
peri 310.3487831259175 5.052e-05 deg
M 7.72889818761698 1.0815e-05 deg
tp 2458572.276413470199
(2019-Mar-29.77641347)
3.941e-05 TDB
period 1314.610556910606
3.60
7.7116e-06
2.111e-08
d
yr
n .2738453590742616 1.6064e-09 deg/d
Q 2.922498201472285 1.1429e-08 au
  Orbit Determination Parameters
   # obs. used (total)      494  
   data-arc span      7113 days (19.47 yr)  
   first obs. used      1997-10-29  
   last obs. used      2017-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61241  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 03:05:57  

Additional Information
 Earth MOID = .780697 au 
 Jupiter MOID = 2.54608 au 
 T_jup = 3.512 
[ 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 16.4   n/a MPO453285  
diameter diameter 2.473 km 0.729 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.052   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85516 Vaclík           Discovered 1997 Nov. 2 by J. Ticha and M. Tichy at Klet.
František "Freddy" Vaclík (1942-2010) was an amateur astronomer interested in variable star visual observations and searching for moldavites. He actively took part in astronomical biking "Ebicykl" and served as the long-time chairman of the Czech Astronomical Society in Southern Bohemia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20101128/MPCPages.arcLast Updated: 2010-12-06

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