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JPL Small-Body Database Browser
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109491 (2001 QF227)
Classification: Main-belt Asteroid          SPK-ID: 2109491
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2151748820973787 5.6237e-08  
a 3.131243322776021 3.1257e-08 au
q 2.457478409979487 1.7172e-07 au
i 7.448282803838135 6.1083e-06 deg
node 249.6929650208801 6.4657e-05 deg
peri 43.6621605657583 6.8341e-05 deg
M 105.1686192697881 2.7121e-05 deg
tp 2458009.268827596908
(2017-Sep-12.76882760)
0.00014761 TDB
period 2023.828244042154
5.54
3.0304e-05
8.297e-08
d
yr
n .1778807075451121 2.6635e-09 deg/d
Q 3.805008235572556 3.7983e-08 au
  Orbit Determination Parameters
   # obs. used (total)      371  
   data-arc span      6821 days (18.67 yr)  
   first obs. used      2000-05-01  
   last obs. used      2019-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53708  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:31:31  

Additional Information
 Earth MOID = 1.44726 au 
 Jupiter MOID = 1.42361 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 14.9   n/a MPO459512  

109491 (2001 QF227)          Discovered 2001-Aug-24 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 QF227 = 2000 JR 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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