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JPL Small-Body Database Browser
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109091 (2001 QA31)
Classification: Main-belt Asteroid          SPK-ID: 2109091
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3026367683936402 4.9163e-08  
a 3.104901567272113 2.2499e-08 au
q 2.165244190772532 1.5917e-07 au
i 14.97500353473994 7.1039e-06 deg
node 31.08452935430284 1.9025e-05 deg
peri 315.8431957274665 2.1373e-05 deg
M 95.01976169531731 9.8456e-06 deg
tp 2458073.049609920049
(2017-Nov-15.54960992)
5.2262e-05 TDB
period 1998.343681787405
5.47
2.1721e-05
5.947e-08
d
yr
n .1801491921940076 1.9582e-09 deg/d
Q 4.044558943771693 2.9309e-08 au
  Orbit Determination Parameters
   # obs. used (total)      580  
   data-arc span      10331 days (28.28 yr)  
   first obs. used      1990-10-16  
   last obs. used      2019-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57155  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:14:51  

Additional Information
 Earth MOID = 1.18624 au 
 Jupiter MOID = 1.54315 au 
 T_jup = 3.098 
[ 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 14.3   n/a MPO432614  

109091 (2001 QA31)          Discovered 2001-Aug-16 by LINEAR at Socorro
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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