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21100 (1992 OB)
Classification: Main-belt Asteroid          SPK-ID: 2021100
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2071248033671841 5.3571e-08  
a 3.090677716836028 3.4417e-08 au
q 2.450521702465029 1.585e-07 au
i 17.69735102135559 7.7047e-06 deg
node 49.33981609773163 1.9163e-05 deg
peri 231.3393852095917 2.6723e-05 deg
M 168.2175581793741 2.0064e-05 deg
tp 2456673.141126058828
(2014-Jan-15.64112606)
0.00010928 JED
period 1984.627515891244
5.43
3.3151e-05
9.076e-08
d
yr
n .181394240036188 3.03e-09 deg/d
Q 3.730833731207028 4.1546e-08 au
  Orbit Determination Parameters
   # obs. used (total)      756  
   data-arc span      8598 days (23.54 yr)  
   first obs. used      1992-07-26  
   last obs. used      2016-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58654  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 19:31:35  

Additional Information
 Earth MOID = 1.47554 au 
 Jupiter MOID = 1.53487 au 
 T_jup = 3.120 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3 mag n/a MPO358831  

21100 (1992 OB)          Discovered 1992-Jul-26 by McNaught, R. H. at Siding Spring
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

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