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11724 Ronaldhsu (1998 HH146)
Classification: Main-belt Asteroid          SPK-ID: 2011724
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09512814095916701 3.044e-08  
a 2.249197875846115 5.646e-09 au
q 2.035235863267567 6.8565e-08 au
i 3.266623225543469 3.3462e-06 deg
node 96.83903192220639 5.6859e-05 deg
peri 14.99408097585107 5.9486e-05 deg
M 353.5605948352692 1.6929e-05 deg
tp 2459222.538557991529
(2021-Jan-08.03855799)
5.794e-05 TDB
period 1232.082882500538
3.37
4.6392e-06
1.27e-08
d
yr
n .2921881353220105 1.1002e-09 deg/d
Q 2.463159888424664 6.1831e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2030  
   data-arc span      17187 days (47.06 yr)  
   first obs. used      1974-02-19  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45487  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:55:45  

Additional Information
 Earth MOID = 1.05194 au 
 Jupiter MOID = 2.60642 au 
 T_jup = 3.620 
[ 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 14.6   n/a MPO449027  

11724 Ronaldhsu           Discovered 1998 Apr. 21 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Ronald Hsu (b. 1985) is a finalist in the 2002 Intel International Science and Engineering Fair for his mathematics project. He attends the West Shore Jr/Sr High School, Palm Bay, Florida, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020724/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1998 HH146 = 1974 DM = 1976 YF7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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