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19462 Ulissedini (1998 HE20)
Classification: Main-belt Asteroid          SPK-ID: 2019462
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1026085563943146 1.4477e-08  
a 2.907837969837821 1.1844e-08 au
q 2.609468913524187 3.9645e-08 au
i 2.220710253019163 7.4355e-07 deg
node 176.4623046763003 1.5569e-05 deg
peri 194.6861395963355 2.0762e-05 deg
M 75.60083283665925 9.7e-06 deg
tp 2458820.154913076976
(2019-Dec-02.65491308)
4.8509e-05 TDB
period 1811.147128340806
4.96
1.1066e-05
3.03e-08
d
yr
n .1987690532517899 1.2145e-09 deg/d
Q 3.206207026151454 1.306e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2341  
   data-arc span      14704 days (40.26 yr)  
   first obs. used      1980-11-30  
   last obs. used      2021-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47985  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:54:21  

Additional Information
 Earth MOID = 1.60775 au 
 Jupiter MOID = 2.25831 au 
 T_jup = 3.276 
[ 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 13.22   n/a E2021B10  

19462 Ulissedini           Discovered 1998 Apr. 27 by P. G. Comba at Prescott.
Ulisse Dini (1845-1918) was a professor at the University of Pisa. His mathematical work centered at first on the study of mappings of surfaces. Later he worked on problems in complex analysis and integral equations.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1998 HE20 = 1980 WY = 1982 DO5 = 1985 YW = 1992 EP25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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