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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2069766149726978 5.3663e-08  
a 3.091174689804099 3.4661e-08 au
q 2.451373816219167 1.5905e-07 au
i 17.69614088867858 7.8294e-06 deg
node 49.33752724107762 1.9941e-05 deg
peri 231.375923242583 2.767e-05 deg
M 131.9015833570393 2.0262e-05 deg
tp 2456673.170406961057
(2014-Jan-15.67040696)
0.00011111 JED
period 1985.106219576292
5.43
3.3388e-05
9.141e-08
d
yr
n .1813504972428325 3.0502e-09 deg/d
Q 3.73097556338903 4.1835e-08 au
  Orbit Determination Parameters
   # obs. used (total)      733  
   data-arc span      8546 days (23.40 yr)  
   first obs. used      1992-07-26  
   last obs. used      2015-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57598  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:47:04  

Additional Information
 Earth MOID = 1.47525 au 
 Jupiter MOID = 1.5338 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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