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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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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07401476294959622 4.5855e-08  
a 3.098262976903118 4.4703e-08 au
q 2.868945777112124 1.4795e-07 au
i 8.566034759305612 5.6759e-06 deg
node 80.40633899017232 4.2188e-05 deg
peri 194.4120666386623 6.3126e-05 deg
M 354.3563099445133 4.9036e-05 deg
tp 2459427.727448227535
(2021-Aug-01.22744823)
0.00027146 TDB
period 1991.938120518063
5.45
4.311e-05
1.18e-07
d
yr
n .1807285057160166 3.9114e-09 deg/d
Q 3.327580176694112 4.8011e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .63584  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 10:55:51  

Additional Information
 Earth MOID = 1.85347 au 
 Jupiter MOID = 1.75193 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 16.02   n/a E2021B25  

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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