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136944 (1998 QK81)
Classification: Main-belt Asteroid          SPK-ID: 2136944
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1836107031715628 5.1888e-08  
a 2.476297216969489 1.3053e-08 au
q 2.021622543699937 1.2484e-07 au
i 11.97038096780284 5.4338e-06 deg
node 239.2015945280253 1.9822e-05 deg
peri 119.8429571386272 2.5744e-05 deg
M 190.8661359140752 1.9185e-05 deg
tp 2459669.198965700950
(2022-Mar-30.69896570)
7.9723e-05 TDB
period 1423.320095909614
3.90
1.1254e-05
3.081e-08
d
yr
n .252929752790381 1.9999e-09 deg/d
Q 2.930971890239041 1.545e-08 au
  Orbit Determination Parameters
   # obs. used (total)      476  
   data-arc span      9457 days (25.89 yr)  
   first obs. used      1994-06-06  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57482  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 22:42:08  

Additional Information
 Earth MOID = 1.04979 au 
 Jupiter MOID = 2.64261 au 
 T_jup = 3.428 
[ 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 16.1   n/a MPO469441  
diameter diameter 3.343 km 0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.081   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136944 (1998 QK81)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

Alternate Designations
 1998 QK81 = 2002 PP131 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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