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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0486554334542405 4.1307e-08  
a 3.120999357437736 3.0107e-08 au
q 2.969145780891197 1.3414e-07 au
i 1.076728440829419 6.5661e-06 deg
node 147.6614443151485 0.00034238 deg
peri 133.2788925987005 0.00035381 deg
M 296.2558812574468 9.131e-05 deg
tp 2459557.096081355965
(2021-Dec-08.59608136)
0.00051155 TDB
period 2013.904840486082
5.51
2.9141e-05
7.978e-08
d
yr
n .1787572047908228 2.5866e-09 deg/d
Q 3.272852933984275 3.1572e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61844  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:53:58  

Additional Information
 Earth MOID = 1.95092 au 
 Jupiter MOID = 1.7874 au 
 T_jup = 3.214 
[ 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 15.69   n/a E2021B55  

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

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