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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1736530964142876 4.2864e-08  
a 2.387315697174698 7.5113e-09 au
q 1.972750934241879 1.0221e-07 au
i 6.365907749507882 4.843e-06 deg
node 334.9165246548938 3.2996e-05 deg
peri 17.97330148124227 3.4608e-05 deg
M 12.81261982032507 1.0896e-05 deg
tp 2458952.548892045639
(2020-Apr-13.04889205)
4.0686e-05 TDB
period 1347.296579906805
3.69
6.3586e-06
1.741e-08
d
yr
n .2672017470903859 1.2611e-09 deg/d
Q 2.801880460107518 8.8157e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1961  
   data-arc span      15568 days (42.62 yr)  
   first obs. used      1977-01-12  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50393  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:55:35  

Additional Information
 Earth MOID = .968164 au 
 Jupiter MOID = 2.62946 au 
 T_jup = 3.505 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456290.5 (2012-Dec-29.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1731879245352592 4.2741e-08  
q 1.974050773014481 1.0184e-07 au
tp 2456258.216255626851
(2012-Nov-26.71625563)
3.7755e-05 TDB
node 335.065702838847 3.3046e-05 deg
peri 18.08213407664027 3.4671e-05 deg
i 6.360821887651083 4.8393e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1961  
   data-arc span      15568 days (42.62 yr)  
   first obs. used      1977-01-12  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50393  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:55:35  

Additional Information
 Jupiter MOID = 2.62946 au 
 T_jup = 3.505 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.82682269743171E-15 -4.344633834175159E-15 -2.053840240483559E-14 1.808543693625687E-14 -4.1875936312332E-14 -2.625518060457071E-15
q -4.344633834175159E-15 1.037107949904087E-14 6.842094267813783E-14 -4.270759591197028E-14 1.046592988134062E-13 6.500971979148426E-15
tp -2.053840240483559E-14 6.842094267813783E-14 1.425416933048027E-9 2.34157094089396E-12 4.052063008421785E-10 1.322247794641702E-15
node 1.808543693625687E-14 -4.270759591197028E-14 2.34157094089396E-12 1.0920457262325E-9 -1.084292213937799E-9 2.451842714666352E-11
peri -4.1875936312332E-14 1.046592988134062E-13 4.052063008421785E-10 -1.084292213937799E-9 1.202094011453493E-9 -2.438567602627185E-11
i -2.625518060457071E-15 6.500971979148426E-15 1.322247794641702E-15 2.451842714666352E-11 -2.438567602627185E-11 2.341894908933907E-11

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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