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JPL Small-Body Database Browser
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146423 (2001 QK228)
Classification: Main-belt Asteroid          SPK-ID: 2146423
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07301545915187074 4.8237e-08  
a 2.64620653745601 1.8603e-08 au
q 2.452992552112978 1.2783e-07 au
i 14.32251631689424 5.8857e-06 deg
node 195.6056904513866 1.8947e-05 deg
peri 235.1484933130679 4.1624e-05 deg
M 314.0360586474827 3.7074e-05 deg
tp 2458801.246875733941
(2019-Nov-13.74687573)
0.00016179 TDB
period 1572.295002074725
4.30
1.658e-05
4.539e-08
d
yr
n .2289646659977684 2.4144e-09 deg/d
Q 2.839420522799043 1.9961e-08 au
  Orbit Determination Parameters
   # obs. used (total)      460  
   data-arc span      6670 days (18.26 yr)  
   first obs. used      2001-08-24  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5595  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 12:58:47  

Additional Information
 Earth MOID = 1.49008 au 
 Jupiter MOID = 2.41182 au 
 T_jup = 3.345 
[ 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 15.4   n/a MPO449800  
diameter diameter 2.666 km 0.541 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.227   0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

146423 (2001 QK228)          Discovered 2001-Aug-24 by LONEOS at Anderson Mesa
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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