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441435 (2008 HE8)
Classification: Outer Main-belt Asteroid          SPK-ID: 2441435
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07156541745416414 1.2198e-07  
a 3.207195944561809 1.4677e-07 au
q 2.977671627931941 3.4808e-07 au
i 9.984926234383005 1.2992e-05 deg
node 124.3280453676754 6.5288e-05 deg
peri 64.35316774458802 0.00013451 deg
M 61.50041785010219 0.00014233 deg
tp 2458642.104759381089
(2019-Jun-07.60475938)
0.00081114 TDB
period 2097.909105874368
5.74
0.00014401
3.943e-07
d
yr
n .171599426777815 1.1779e-08 deg/d
Q 3.436720261191678 1.5727e-07 au
  Orbit Determination Parameters
   # obs. used (total)      46  
   data-arc span      2712 days (7.43 yr)  
   first obs. used      2008-04-03  
   last obs. used      2015-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66059  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:38:26  

Additional Information
 Earth MOID = 1.99735 au 
 Jupiter MOID = 1.60549 au 
 T_jup = 3.165 
[ 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 16.8   n/a MPO349179  

441435 (2008 HE8)          Discovered 2008-Apr-03 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 2008 HE8 = 2011 XN2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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