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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 ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2449762520719988 5.4968e-08  
a 2.347942874284521 8.6199e-09 au
q 1.772752628863142 1.2665e-07 au
i 5.771081524647098 4.6932e-06 deg
node 60.29726839706274 4.0224e-05 deg
peri 310.3458769098082 4.1074e-05 deg
M 225.7143070682127 1.1052e-05 deg
tp 2459886.681549175027
(2022-Nov-03.18154918)
4.2288e-05 TDB
period 1314.10393654258
3.60
7.2366e-06
1.981e-08
d
yr
n .2739509333996543 1.5086e-09 deg/d
Q 2.923133119705899 1.0732e-08 au
  Orbit Determination Parameters
   # obs. used (total)      644  
   data-arc span      8626 days (23.62 yr)  
   first obs. used      1997-10-29  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58226  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:26:19  

Additional Information
 Earth MOID = .778873 au 
 Jupiter MOID = 2.55066 au 
 T_jup = 3.512 
[ 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 16.45   n/a MPO637173  
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
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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