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41943 Fredrick (2000 XH2)
Classification: Main-belt Asteroid          SPK-ID: 2041943
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .142544993744138 6.8986e-08  
a 2.531596293143016 1.5661e-08 au
q 2.170729915374262 1.7889e-07 au
i 14.37452636931239 7.1123e-06 deg
node 62.68461145181823 1.7714e-05 deg
peri 358.4972478095577 2.3819e-05 deg
M 318.8171218523619 1.6693e-05 deg
tp 2459168.807821075337
(2020-Nov-15.30782108)
6.8832e-05 TDB
period 1471.262289388975
4.03
1.3652e-05
3.738e-08
d
yr
n .2446878456658536 2.2706e-09 deg/d
Q 2.892462670911771 1.7894e-08 au
  Orbit Determination Parameters
   # obs. used (total)      821  
   data-arc span      8138 days (22.28 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52308  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 03:51:22  

Additional Information
 Earth MOID = 1.18372 au 
 Jupiter MOID = 2.44723 au 
 T_jup = 3.393 
[ 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 MPO452748  
diameter diameter 4.079 km 0.220 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.153   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

41943 Fredrick           Discovered 2000 Dec. 3 by L. Robinson at Sunflower Observatory.
Richard Fredrick (b. 1953) is an amateur astronomer and team member of the Powell Observatory Near-Earth-Object follow-up program.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020921/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 2000 XH2 = 1998 HQ116 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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