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6149 Pelcak (1979 SS)
Classification: Main-belt Asteroid          SPK-ID: 2006149
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1736531060940581 4.1598e-08  
a 2.387315698372656 7.3045e-09 au
q 1.972750912123139 9.8707e-08 au
i 6.365907790180599 4.6368e-06 deg
node 334.9165241811257 3.298e-05 deg
peri 17.97330071119903 3.459e-05 deg
M 12.81261987777281 1.0751e-05 deg
tp 2458952.548891794548
(2020-Apr-13.04889179)
4.0152e-05 TDB
period 1347.296580920917
3.69
6.1835e-06
1.693e-08
d
yr
n .2672017468892627 1.2263e-09 deg/d
Q 2.801880484622173 8.573e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2100  
   data-arc span      15998 days (43.80 yr)  
   first obs. used      1977-01-12  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48349  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:37:59  

Additional Information
 Earth MOID = .968164 au 
 Jupiter MOID = 2.62946 au 
 T_jup = 3.505 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3   n/a MPO384810  
diameter diameter 3.959 km 0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.258   0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6149 Pelčák           Discovered 1979 Sept. 25 by A. Mrkos at Klet.
Oldřich Pelčák (b. 1943) has been a Czechoslovak astronaut-candidate, a member of a team of Czechoslovak astronauts with Vladimír Remek. The name was suggested by M. Tichy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001111/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1979 SS = 1977 AA3 = 1990 QD4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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