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20084 Buckmaster (1994 GU9)
Classification: Main-belt Asteroid          SPK-ID: 2020084
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1217637431009013 4.2114e-08  
a 2.299907686752339 1.119e-08 au
q 2.019862318026839 9.6201e-08 au
i 21.96853403259689 5.6135e-06 deg
node 125.5987342941681 1.1126e-05 deg
peri 123.9604463222104 2.4038e-05 deg
M 122.9904515211035 2.1334e-05 deg
tp 2458565.255863520545
(2019-Mar-22.75586352)
7.498e-05 TDB
period 1273.984176777483
3.49
9.2973e-06
2.545e-08
d
yr
n .2825780779401929 2.0622e-09 deg/d
Q 2.579953055477839 1.2552e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1373  
   data-arc span      10872 days (29.77 yr)  
   first obs. used      1990-01-24  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43814  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:21:47  

Additional Information
 Earth MOID = 1.06021 au 
 Jupiter MOID = 2.69887 au 
 T_jup = 3.486 
[ 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 13.6   n/a MPO492964  
diameter diameter 5.093 km 0.967 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.262   0.139 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

20084 Buckmaster           Discovered 1994 Apr. 6 by C. S. Shoemaker and D. H. Levy at Palomar.
Bill Buckmaster (b. 1947) is anchor of the long-running news magazine program Arizona Illustrated, the centerpiece of public broadcasting at the University of Arizona. His coverage of events and the passage of life in southern Arizona is thorough and thought-provoking.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040504/MPCPages.arcLast Updated: 2004-05-11

Alternate Designations
 1994 GU9 = 1990 BL3 = 1998 MS5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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