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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04869108097427625 4.0867e-08  
a 3.120724615563286 2.5586e-08 au
q 2.968773160608477 1.3401e-07 au
i 1.076752339882926 4.8042e-06 deg
node 147.6649526267703 0.0003196 deg
peri 133.45548784 0.00032714 deg
M 331.1286801052228 6.8236e-05 deg
tp 2459557.990037253859
(2021-Dec-09.49003725)
0.00038104 TDB
period 2013.63891998253
5.51
2.4764e-05
6.78e-08
d
yr
n .1787808114093878 2.1987e-09 deg/d
Q 3.272676070518095 2.6832e-08 au
  Orbit Determination Parameters
   # obs. used (total)      376  
   data-arc span      9402 days (25.74 yr)  
   first obs. used      1995-09-17  
   last obs. used      2021-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60644  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 09:20:17  

Additional Information
 Earth MOID = 1.9522 au 
 Jupiter MOID = 1.78684 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 15.71   n/a MPO614063  

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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