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JPL Small-Body Database Browser
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109517 (2001 QR238)
Classification: Main-belt Asteroid          SPK-ID: 2109517
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1390690305483587 3.9583e-08  
a 3.095420190582113 2.3418e-08 au
q 2.664943105538042 1.2492e-07 au
i 10.27266118679624 5.6012e-06 deg
node 350.8321127118991 2.401e-05 deg
peri 307.0393010915488 3.1197e-05 deg
M 134.7244968853106 1.8815e-05 deg
tp 2457856.073348424625
(2017-Apr-12.57334842)
0.00010458 TDB
period 1989.197219235304
5.45
2.2574e-05
6.18e-08
d
yr
n .1809775302915378 2.0538e-09 deg/d
Q 3.525897275626182 2.6675e-08 au
  Orbit Determination Parameters
   # obs. used (total)      832  
   data-arc span      6651 days (18.21 yr)  
   first obs. used      2001-08-24  
   last obs. used      2019-11-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57558  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 10:16:02  

Additional Information
 Earth MOID = 1.66448 au 
 Jupiter MOID = 1.82588 au 
 T_jup = 3.184 
[ 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 14.4   n/a MPO341325  
diameter diameter 5.189 km 0.767 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.137   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109517 (2001 QR238)          Discovered 2001-Aug-24 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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