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JPL Small-Body Database Browser
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15304 Wikberg (1992 UX4)
Classification: Main-belt Asteroid          SPK-ID: 2015304
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3271951264494036 4.7714e-08  
a 2.872439364974075 1.2897e-08 au
q 1.932591203733138 1.3952e-07 au
i 16.13117218436383 4.8797e-06 deg
node 239.4169716986004 2.0439e-05 deg
peri 173.1591007761746 2.2156e-05 deg
M 244.380156513264 1.0863e-05 deg
tp 2459571.590068922541
(2021-Dec-23.09006892)
5.6029e-05 TDB
period 1778.175948107909
4.87
1.1975e-05
3.279e-08
d
yr
n .202454656066551 1.3635e-09 deg/d
Q 3.812287526215012 1.7116e-08 au
  Orbit Determination Parameters
   # obs. used (total)      977  
   data-arc span      32715 days (89.57 yr)  
   first obs. used      1929-11-27  
   last obs. used      2019-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56455  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:15:38  

Additional Information
 Earth MOID = .945021 au 
 Jupiter MOID = 1.57729 au 
 T_jup = 3.160 
[ 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 13.5   n/a MPO473973  

15304 Wikberg           Discovered 1992 Oct. 21 by C. S. Shoemaker and E. M. Shoemaker at Palomar.
Leonard Wikberg III (b. 1959) is a well-known planetary animator and the creator of extraordinary space images. As a graphics artist, he has helped to produce programs for Canadian, English, German and Japanese television. His web site is a repository for information on cratering.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020427/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1992 UX4 = 1987 WH1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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