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382870 (2004 HR31)
Classification: Main-belt Asteroid          SPK-ID: 2382870
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07380576956961245 4.5921e-08  
a 3.098252799034151 4.5281e-08 au
q 2.86958386688023 1.4816e-07 au
i 8.566292905266618 5.676e-06 deg
node 80.40846555493668 4.2184e-05 deg
peri 194.2055328910796 6.3163e-05 deg
M 282.9564996302787 4.8787e-05 deg
tp 2459426.792025323576
(2021-Jul-31.29202532)
0.00027176 TDB
period 1991.928305178621
5.45
4.3668e-05
1.196e-07
d
yr
n .1807293962659554 3.9621e-09 deg/d
Q 3.326921731188072 4.8623e-08 au
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      5865 days (16.06 yr)  
   first obs. used      2004-03-31  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63591  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 00:44:41  

Additional Information
 Earth MOID = 1.85421 au 
 Jupiter MOID = 1.75418 au 
 T_jup = 3.201 
[ 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 15.9   n/a MPO427906  

382870 (2004 HR31)          Discovered 2004-Apr-19 by LINEAR at Socorro
Reference: Last Updated: 2014-01-21

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