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6204 MacKenzie (1981 JB3)
Classification: Main-belt Asteroid          SPK-ID: 2006204
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1155378808006734 1.4655e-08  
a 2.198163976314746 5.8355e-09 au
q 1.944192768838958 3.4815e-08 au
i 5.153801152036282 7.623e-07 deg
node 54.1762117736369 4.4818e-06 deg
peri 188.6652981864977 8.293e-06 deg
M 43.41704209276514 7.8949e-06 deg
tp 2459056.935756037945
(2020-Jul-26.43575604)
2.6101e-05 TDB
period 1190.388044305584
3.26
4.7402e-06
1.298e-08
d
yr
n .3024223921956533 1.2043e-09 deg/d
Q 2.452135183790533 6.5098e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1861  
   data-arc span      25459 days (69.70 yr)  
   first obs. used      1950-12-09  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49444  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 18:27:13  

Additional Information
 Earth MOID = .930047 au 
 Jupiter MOID = 2.55046 au 
 T_jup = 3.653 
[ 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 14.41   n/a MPCxxxxx  
diameter diameter 2.924 km 0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.474   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6204 MacKenzie (1981 JB3)          Discovered 1981-May-06 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 JB3 = 1968 KF = 1984 DY2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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