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144769 Zachariassen (2004 HO20)
Classification: Main-belt Asteroid          SPK-ID: 2144769
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04863579631001408 4.1335e-08  
a 3.121723885795698 3.018e-08 au
q 2.969896358750033 1.3426e-07 au
i 1.076644025093511 6.5654e-06 deg
node 147.6579643612397 0.00034239 deg
peri 133.0036036631764 0.00035381 deg
M 260.7851094103294 9.1231e-05 deg
tp 2459555.719249824959
(2021-Dec-07.21924982)
0.00051168 TDB
period 2014.606161928225
5.52
2.9215e-05
7.999e-08
d
yr
n .1786949761215045 2.5913e-09 deg/d
Q 3.273551412841364 3.1648e-08 au
  Orbit Determination Parameters
   # obs. used (total)      337  
   data-arc span      8953 days (24.51 yr)  
   first obs. used      1995-09-17  
   last obs. used      2020-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61848  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 14:41:44  

Additional Information
 Earth MOID = 1.95357 au 
 Jupiter MOID = 1.78718 au 
 T_jup = 3.214 
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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 15.6   n/a MPO426914  

144769 Zachariassen           Discovered 2004 Apr. 19 by T. Glinos and D. H. Levy at the Jarnac Observatory, Vail.
Rayan Zachariassen (b. 1963) is a Canadian computer scientist who helped build and manage Canada's first national educational Internet backbone (CA*net)and commercial backbone (UUNET Canada). He has also helped found a number of startups in the networking and computing fields.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2013-07-22Last Updated: 2014-08-13

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Alternate Designations
 2004 HO20 = 2003 BV41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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