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216774 (2006 HK31)
Classification: Main-belt Asteroid          SPK-ID: 2216774
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1529104844790404 4.6094e-08  
a 2.167479295411618 1.1811e-08 au
q 1.836048986251938 9.5269e-08 au
i 4.887802044229973 3.9345e-06 deg
node 211.3552944655578 6.1551e-05 deg
peri 43.0745811483811 6.4145e-05 deg
M 178.5818283590534 2.152e-05 deg
tp 2458622.316588106295
(2019-May-18.81658811)
6.6979e-05 TDB
period 1165.549878138996
3.19
9.5272e-06
2.608e-08
d
yr
n .3088670907630337 2.5247e-09 deg/d
Q 2.498909604571297 1.3617e-08 au
  Orbit Determination Parameters
   # obs. used (total)      367  
   data-arc span      7471 days (20.45 yr)  
   first obs. used      2000-08-02  
   last obs. used      2021-01-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54052  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:13  

Additional Information
 Earth MOID = .823695 au 
 Jupiter MOID = 2.53852 au 
 T_jup = 3.672 
[ 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 17.18   n/a MPCxxxxx  

216774 (2006 HK31)          Discovered 2006-Apr-18 by NEAT at Palomar
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

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