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226399 (2003 QH21)
Classification: Outer Main-belt Asteroid          SPK-ID: 2226399
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1312477215284293 4.2794e-08  
a 3.237807557629298 2.8322e-08 au
q 2.812852692942924 1.4412e-07 au
i 5.328978439972208 4.1894e-06 deg
node 125.9407678440498 5.0051e-05 deg
peri 240.0316571663321 5.2528e-05 deg
M 309.2174425435834 1.6768e-05 deg
tp 2459300.683656467631
(2021-Mar-27.18365647)
0.00010066 TDB
period 2128.016424164803
5.83
2.7922e-05
7.645e-08
d
yr
n .1691716266434793 2.2197e-09 deg/d
Q 3.662762422315673 3.204e-08 au
  Orbit Determination Parameters
   # obs. used (total)      434  
   data-arc span      9256 days (25.34 yr)  
   first obs. used      1995-03-26  
   last obs. used      2020-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53636  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 16:00:52  

Additional Information
 Earth MOID = 1.81588 au 
 Jupiter MOID = 1.80907 au 
 T_jup = 3.164 
[ 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 15.0   n/a MPO437074  

226399 (2003 QH21)          Discovered 2003-Aug-22 by NEAT at Palomar
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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