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249868 (2001 QO171)
Classification: Main-belt Asteroid          SPK-ID: 2249868
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1784349601591003 4.5006e-08  
a 2.658545630654756 1.7308e-08 au
q 2.184168146967724 1.1549e-07 au
i 9.183760600965867 4.9742e-06 deg
node 207.0125430517394 2.8755e-05 deg
peri 146.5671144097961 3.2482e-05 deg
M 98.19783140725087 1.5613e-05 deg
tp 2458568.619096414524
(2019-Mar-26.11909641)
6.6731e-05 TDB
period 1583.305079782964
4.33
1.5462e-05
4.233e-08
d
yr
n .2273724783661706 2.2204e-09 deg/d
Q 3.132923114341787 2.0396e-08 au
  Orbit Determination Parameters
   # obs. used (total)      315  
   data-arc span      7180 days (19.66 yr)  
   first obs. used      2000-05-28  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5183  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:28:02  

Additional Information
 Earth MOID = 1.18667 au 
 Jupiter MOID = 2.35838 au 
 T_jup = 3.346 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO454853  
diameter diameter 1.696 km 0.315 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.203   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249868 (2001 QO171)          Discovered 2001-Aug-25 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

Alternate Designations
 2001 QO171 = 2006 WU183 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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