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109158 (2001 QW61)
Classification: Main-belt Asteroid          SPK-ID: 2109158
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2360274203701168 3.8922e-08  
a 2.75201577157327 1.7028e-08 au
q 2.102464588190954 1.0398e-07 au
i 4.603891641071462 5.4602e-06 deg
node 147.4376991873874 8.4347e-05 deg
peri 163.9402614360177 8.6124e-05 deg
M 52.65362291588426 1.9918e-05 deg
tp 2458756.606310975866
(2019-Sep-30.10631098)
9.0861e-05 TDB
period 1667.534410480249
4.57
1.5477e-05
4.237e-08
d
yr
n .2158875989229633 2.0037e-09 deg/d
Q 3.401566954955586 2.1048e-08 au
  Orbit Determination Parameters
   # obs. used (total)      447  
   data-arc span      21019 days (57.55 yr)  
   first obs. used      1960-09-24  
   last obs. used      2018-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55607  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 04:17:24  

Additional Information
 Earth MOID = 1.08873 au 
 Jupiter MOID = 1.8973 au 
 T_jup = 3.300 
[ 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 16.0   n/a MPO436525  
diameter diameter 3.777 km 0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109158 (2001 QW61)          Discovered 2001-Aug-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 QW61 = 6674 P-L 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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