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178834 (2001 HA16)
Classification: Main-belt Asteroid          SPK-ID: 2178834
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07572751498884529 4.6282e-08  
a 2.449540744243353 1.4101e-08 au
q 2.264043110817877 1.1012e-07 au
i 5.278594755005344 4.5082e-06 deg
node 224.0993660604282 3.9965e-05 deg
peri 335.2578691722341 4.7253e-05 deg
M 70.29575766841684 2.3289e-05 deg
tp 2458927.066297088680
(2020-Mar-18.56629709)
9.1015e-05 TDB
period 1400.313992096019
3.83
1.2091e-05
3.31e-08
d
yr
n .2570851980570047 2.2199e-09 deg/d
Q 2.635038377668828 1.5169e-08 au
  Orbit Determination Parameters
   # obs. used (total)      515  
   data-arc span      8011 days (21.93 yr)  
   first obs. used      1998-09-30  
   last obs. used      2020-09-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54555  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:19:50  

Additional Information
 Earth MOID = 1.26118 au 
 Jupiter MOID = 2.33048 au 
 T_jup = 3.487 
[ 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 16.52   n/a E2021B55  

178834 (2001 HA16)          Discovered 2001-Apr-24 by Kusnirak, P., Pravec, P. at Ondrejov
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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