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181131 (2005 QC139)
Classification: Main-belt Asteroid          SPK-ID: 2181131
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1212076665713383 3.8853e-08  
a 2.957466227073876 2.1736e-08 au
q 2.598998646726712 1.109e-07 au
i 3.046666870174315 4.5131e-06 deg
node 24.22939072581533 7.789e-05 deg
peri 219.4290637092627 8.1701e-05 deg
M 96.7048602871965 2.1493e-05 deg
tp 2458701.473143786554
(2019-Aug-05.97314379)
0.00011189 TDB
period 1857.710850347256
5.09
2.048e-05
5.607e-08
d
yr
n .193786885581632 2.1364e-09 deg/d
Q 3.31593380742104 2.4371e-08 au
  Orbit Determination Parameters
   # obs. used (total)      327  
   data-arc span      8263 days (22.62 yr)  
   first obs. used      1998-03-04  
   last obs. used      2020-10-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52753  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:20  

Additional Information
 Earth MOID = 1.58547 au 
 Jupiter MOID = 1.70321 au 
 T_jup = 3.254 
[ 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 16.14   n/a E2021B55  

181131 (2005 QC139)          Discovered 2005-Aug-28 by Spacewatch at Kitt Peak
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

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