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123860 Davederrick (2001 DX)
Classification: Main-belt Asteroid          SPK-ID: 2123860
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0946133098112522 3.6419e-08  
a 3.050502414237065 2.028e-08 au
q 2.761884284238881 1.0591e-07 au
i 9.749516422964364 4.6926e-06 deg
node 138.7913618331107 2.4021e-05 deg
peri 100.3854521393504 3.5299e-05 deg
M 141.9130562072554 2.5428e-05 deg
tp 2458233.358745000548
(2018-Apr-24.85874500)
0.00013658 TDB
period 1946.056685555922
5.33
1.9406e-05
5.313e-08
d
yr
n .1849894726458907 1.8448e-09 deg/d
Q 3.339120544235249 2.2199e-08 au
  Orbit Determination Parameters
   # obs. used (total)      799  
   data-arc span      7134 days (19.53 yr)  
   first obs. used      2001-01-18  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53888  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:22:25  

Additional Information
 Earth MOID = 1.77108 au 
 Jupiter MOID = 1.76161 au 
 T_jup = 3.208 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5   n/a MPO439794  
diameter diameter 8.800 km 0.342 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.043   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

123860 Davederrick           Discovered 2001 Feb. 16 by M. Schwartz and P. Holvorcem at Tenagra Observatory.
The unflagging enthusiasm and support of David Derrick (b. 1952), of Farmington, Utah, has benefited both students and professionals. He has educated and entertained countless groups of adults and children in his private planetarium and space museum and recently completed an observatory to further these efforts.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070402/MPCPages.arcLast Updated: 2007-07-05

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Alternate Designations
 2001 DX = 2002 JS72 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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