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216928 (1998 QB98)
Classification: Main-belt Asteroid          SPK-ID: 2216928
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2104416337816171 6.9828e-08  
a 3.108348507298305 2.7816e-08 au
q 2.454222569059799 2.0479e-07 au
i 16.69072222351808 6.8186e-06 deg
node 344.9590640397018 1.5453e-05 deg
peri 343.9727262191097 2.0205e-05 deg
M 47.74642371283896 1.247e-05 deg
tp 2458935.020291178294
(2020-Mar-26.52029118)
6.8287e-05 TDB
period 2001.672329442234
5.48
2.6868e-05
7.356e-08
d
yr
n .1798496160959142 2.4141e-09 deg/d
Q 3.762474445536812 3.3669e-08 au
  Orbit Determination Parameters
   # obs. used (total)      649  
   data-arc span      8240 days (22.56 yr)  
   first obs. used      1998-08-27  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49553  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:42:08  

Additional Information
 Earth MOID = 1.44634 au 
 Jupiter MOID = 1.64828 au 
 T_jup = 3.122 
[ 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 14.68   n/a E2021B55  

216928 (1998 QB98)          Discovered 1998-Aug-28 by LINEAR at Socorro
Reference: 20090806/Numbers.arcLast Updated: 2009-08-09

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