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9953 (1991 EB)
Classification: Main-belt Asteroid          SPK-ID: 2009953
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1219414845410333 4.6311e-08  
a 2.624846614694574 1.7371e-08 AU
q 2.304768921806212 1.2132e-07 AU
i 2.831678731610639 4.6471e-06 deg
node 255.9289024681914 0.00012606 deg
peri 211.0410394925962 0.00012869 deg
M 262.1601890277176 2.6819e-05 deg
tp 2457422.650614904985
(2016-Feb-04.15061491)
0.0001172 JED
period 1553.296351000191
4.25
1.5419e-05
4.221e-08
d
yr
n .2317651746031532 2.3007e-09 deg/d
Q 2.944924307582936 1.9489e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1146  
   data-arc span      22950 days (62.83 yr)  
   first obs. used      1951-12-01  
   last obs. used      2014-10-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50472  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:16:39  

Additional Information
 Earth MOID = 1.32202 AU 
 T_jup = 3.391 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4 mag n/a MPO266011  

9953 (1991 EB)          Discovered 1991-Mar-07 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 19990202/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 EB = 1985 XJ 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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