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216410 (2008 QG18)
Classification: Main-belt Asteroid          SPK-ID: 2216410
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2576227069837869 6.0537e-08  
a 2.384925706559089 1.413e-08 au
q 1.770514690080116 1.4212e-07 au
i 13.22812160010974 6.1754e-06 deg
node 324.1242536088802 2.1803e-05 deg
peri 7.136953756760709 2.3835e-05 deg
M 142.8696225143874 9.4763e-06 deg
tp 2458666.614525008634
(2019-Jul-02.11452501)
3.4997e-05 TDB
period 1345.273877080041
3.68
1.1956e-05
3.273e-08
d
yr
n .2676035015125628 2.3782e-09 deg/d
Q 2.999336723038062 1.777e-08 au
  Orbit Determination Parameters
   # obs. used (total)      388  
   data-arc span      8048 days (22.03 yr)  
   first obs. used      1999-02-07  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46385  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:54:42  

Additional Information
 Earth MOID = .758289 au 
 Jupiter MOID = 2.37221 au 
 T_jup = 3.455 
[ 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 16.53   n/a MPCxxxxx  

216410 (2008 QG18)          Discovered 2008-Aug-28 by La Sagra at La Sagra
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

[ show close-approach data ]
Alternate Designations
 2008 QG18 = 1999 CC139 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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