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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2068581018037429 5.6776e-08  
a 3.09233658064966 3.7596e-08 AU
q 2.452661705438194 1.7311e-07 AU
i 17.69250619714829 8.4769e-06 deg
node 49.34020424642793 2.6738e-05 deg
peri 231.4758598806318 3.6723e-05 deg
M 59.27743789277009 2.3948e-05 deg
tp 2456673.448995632453
(2014-Jan-15.94899563)
0.00013321 JED
period 1986.225548163868
5.44
3.6222e-05
9.917e-08
d
yr
n .1812482979754217 3.3054e-09 deg/d
Q 3.732011455861126 4.5373e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      572  
   data-arc span      8158 days (22.34 yr)  
   first obs. used      1992-07-26  
   last obs. used      2014-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58489  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:58:38  

Additional Information
 Earth MOID = 1.47939 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 13.2 mag n/a MPO309319  

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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