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43793 Mackey (1990 VK7)
Classification: Main-belt Asteroid          SPK-ID: 2043793
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2165752403353303 4.5606e-08  
a 2.548139650896934 9.3262e-09 au
q 1.996275693595946 1.1869e-07 au
i 5.241457190014501 4.6982e-06 deg
node 270.8384052298429 4.4701e-05 deg
peri 80.70453547867528 4.6333e-05 deg
M 177.9747193647361 1.3133e-05 deg
tp 2458466.004597573918
(2018-Dec-13.50459757)
5.1808e-05 TDB
period 1485.707328643111
4.07
8.1565e-06
2.233e-08
d
yr
n .2423088269536815 1.3303e-09 deg/d
Q 3.100003608197922 1.1346e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1434  
   data-arc span      11087 days (30.35 yr)  
   first obs. used      1990-11-11  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54514  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:26:59  

Additional Information
 Earth MOID = .996992 au 
 Jupiter MOID = 2.37319 au 
 T_jup = 3.403 
[ 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 14.75   n/a MPCxxxxx  
diameter diameter 2.897 km 0.108 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.253   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43793 Mackey           Discovered 1990 Nov. 13 by C. S. Shoemaker and D. H. Levy at Palomar.
Lance Mackey (b. 1970), with his canine athletes, is the first musher to win North America's two premier long-distance sled-dog races back-to-back, the 1000-mile Yukon Quest and the 1100-mile Iditarod. His 2007 triumphs are testimonial to his courage, toughness and determination as a cancer survivor.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070601/MPCPages.arcLast Updated: 2007-06-06

Alternate Designations
 1990 VK7 = 1998 UR32 = 2000 CZ42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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