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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3263777494680482 4.6872e-08  
a 2.8735725123476 1.3165e-08 au
q 1.935702382834345 1.3702e-07 au
i 16.10734190217803 4.7768e-06 deg
node 239.3333852750627 1.9699e-05 deg
peri 173.1780870383062 2.1369e-05 deg
M 284.8445066636196 1.0868e-05 deg
tp 2459571.941048927177
(2021-Dec-23.44104893)
5.5281e-05 TDB
period 1779.228259673398
4.87
1.2227e-05
3.348e-08
d
yr
n .2023349157381768 1.3904e-09 deg/d
Q 3.811442641860855 1.7461e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1077  
   data-arc span      33160 days (90.79 yr)  
   first obs. used      1929-11-27  
   last obs. used      2020-09-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55328  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:54:54  

Additional Information
 Earth MOID = .947351 au 
 Jupiter MOID = 1.57926 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 13.47   n/a E2021B10  

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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