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109494 (2001 QW228)
Classification: Main-belt Asteroid          SPK-ID: 2109494
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1412819248158096 4.144e-08  
a 2.719183504060005 1.3566e-08 au
q 2.335012024679009 1.1712e-07 au
i 6.954638206164971 4.4513e-06 deg
node 260.8370731312919 3.7904e-05 deg
peri 153.5607143368386 4.2975e-05 deg
M 8.000389801306321 1.8435e-05 deg
tp 2458964.103061985758
(2020-Apr-24.60306199)
8.381e-05 TDB
period 1637.782409425541
4.48
1.2256e-05
3.356e-08
d
yr
n .2198094190828875 1.6449e-09 deg/d
Q 3.103354983441 1.5482e-08 au
  Orbit Determination Parameters
   # obs. used (total)      792  
   data-arc span      7122 days (19.50 yr)  
   first obs. used      2000-05-28  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52489  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 09:06:04  

Additional Information
 Earth MOID = 1.34921 au 
 Jupiter MOID = 2.23715 au 
 T_jup = 3.334 
[ 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 15.3   n/a MPO359510  

109494 (2001 QW228)          Discovered 2001-Aug-24 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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